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Paper title:Ndoped carbon anchored CoS2/MoS2 nanosheets as efficient electrocatalysts for overall water splitting(nitrogen doped CoS2/MoS2Nanoplates as efficient electrocatalysts for total water cracking)

Journals:Frontiers of Optoelectronics

Authors: xing Wei Zhou, Wei Zhang, Zun Hao Zhang, Zizhun Wang, Xu Zou, Dabing Li, Wei Tao Zheng.

Publication date: 15 Sep 2022

DOI:10.1007/s12200-022-00034-3

Wechat link:Click here to read the WeChat article.

First author: Zhou Xingwei

Correspondents: Zhang Wei, Zou Xu

Communication unit: Jilin University

Research background

Hydrogen energy is a clean, carbon-free, flexible and efficient secondary energy with various forms of utilization. Vigorously developing the hydrogen energy industry and accelerating the clean transformation of energy structure are the ideal ways to achieve the "double carbon goal". Using renewable energy power supply system coupled with electrolytic water technology to produce decarbonized "green hydrogen" is the strategic direction of hydrogen energy industry development in the future. Electrolytic water reaction is a high energy consumption process, which is not easy to occur in thermodynamics and kinetics. The key to improve the overall efficiency of electrolytic water reaction lies in the research and development of efficient catalytic materials.

Introduction to the article

In recent years, a large number of catalytic materials without noble metals have been widely studied, but these materials only show good electrocatalytic activity in hydrogen evolution reaction (HER) or oxygen evolution reaction (OER), and there are few studies on bifunctional electrocatalysts that are effective for both HER and OER.

Recently, Zhou Xingwei, a research team of Professor Zheng Weitao of Jilin University, and others prepared a nitrogen-doped CoS on carbon fiber cloth (CC) by hydrothermal-annealing-hydrothermal method.2And MoS2Nanoplate-coupled bifunctional electrocatalyst (MOS/COS/CC), the prepared MOS/COS/CC catalyst has rich active sites and stable structure, and shows excellent HER and OER performance in alkaline electrolyte. Related work toNdoped carbon anchored CoS2/MoS2 nanosheets as efficient electrocatalysts for overall water splitting The title was published on July 18, 2022.Frontiers of Optoelectronics In the journal.

Graphic reading guide

Innovation 1: Simple hydrothermal-annealing-hydrothermal method to prepare different MoS.2Content of MOS/COS/CC catalyst

Growth of nitrogen-doped CoS on carbon fiber cloth by hydrothermal-annealing-hydrothermal method.2/MoS2The schematic diagram of the synthesis process of nanosheet catalytic materials is shown in Figure 1, and the scanning electron microscope (SEM) photos of MOS/COS/CC at different synthesis times are shown in Figure 2. By controlling the hydrothermal reaction time in the second step, MoS with different scales can be obtained.2With CoS2Composite catalytic materials. MoS2Growth time significantly affects the surface area of the catalyst (Figure 2). With the increase of hydrothermal time, MoS deposited on the substrate2The number of nanosheets increased gradually, and cracks appeared on the catalyst surface when the deposition time was too long.

Fig. 1 synthesis diagram of mos/cos/cc

Fig. 2 SEM photos of MOS/COS/CC at different synthesis times: (a,e)2h,(b,f)4h,(c,g)6h,(d,h)8h.

X-ray diffraction (XRD) pattern of MoS/COS/CC proves MOS.2With CoS2Generation of, in which MoS2It is a hexagonal 2H phase (Figure 3). The 0.65 nm crystal plane spacing corresponds to hexagonal MoS in high resolution transmission electron microscope (HRTEM) photos.2 (002) crystal plane, 0.245 nm corresponds to CoS.2 (210) crystal plane, which confirmed the CoS.2/MoS2The existence of heterostructure. TEM-EDX photos show that Mo, S, Co and N are uniformly distributed in MOS/COS/CC (Figure 4).

Fig. 3 XRD spectrum of mos/cos/cc

Figs. 4 (a) and 4 (b) are TEM photos and HRTEM photos of MOS/COS/CC, and (c) and (d) are elemental distribution maps of MOS/COS/CC.

Innovation 2: MOS/COS/CC catalyst shows excellent HER and OER performance.

The comparison of HER and OER performance of MOS/COS/CC catalyst with commercial catalyst is shown in fig. 5. We compared different MoS in 1.0 mol/L KOH solution.2Growth time of MOS/COS/CC catalyst and commercial RuO2OER performance of catalyst. The linear voltammetric scanning curve (LSV) shows that MOS/COS/CC-6H shows the lowest overpotential (197 mV), which is lower than that of commercial RuO.2Catalyst. In addition, the MOS/COS/CC-6H catalyst has the lowest Tafel slope (64 mV dec-1), which indicates that the material has fast reaction kinetics, which is beneficial to the catalytic reaction. In addition, we compared different MoS in 1.0 mol/L KOH.2HER performance of MOS/COS/CC catalyst with growth time and commercial Pt/C catalyst. It is not difficult to find that MOS/COS/CC-6H also shows excellent HER performance. MOS/COS/CC-6H also has advantages over commercial RuO.2The stability of. The excellent catalytic activity and stability of MoS/COS/CC-6H benefit from MOS.2With CoS2The multi-stage structure of the material exposes more catalytic active sites, and the three-dimensional self-supporting structure grown in situ on CC shows excellent structural stability.

Fig. 5 different MoS2Growth time of MOS/COS/CC catalyst and commercial RuO2And the results of OER and HER performance tests of Pt/C catalyst: (a) linear voltammogram of oer test, (b) Tafel curve of oer test, (c) linear voltammogram of her, (d) Tafel curve of her test and (e) stability test results.

Summary and outlook

We developed a simple and effective method to construct heterostructure, and the prepared MOS/COS/CC catalyst showed excellent OER and HER activity in alkaline solution. Its excellent performance is attributed to rich active sites and stable morphology and structure. The synthesis method proposed by us provides an effective strategy for developing multi-level structure nanocomposites.

Introduction of communication author

Zhang WeiDirector of Electron Microscope Center of Jilin University, Tang Aoqing scholar-leading professor and doctoral supervisor. He is also the vice chairman of the Surface and Interface Physics Association of the Chinese Physical Society and the Jilin Electron Microscope Society. In 2004, he received a Ph.D. degree from China Institute of Metals, and successively engaged in scientific research in Japanese Institute of Materials, Samsung Institute of Comprehensive Technology, Fritz-Haber Institute of Germany, and data transfer unit and Spanish Energy Cooperation Research Center. He is in charge of general projects of NSFC, sub-projects of key projects and international cooperation projects of Jilin Science and Technology Department. His main research interests are surface/interface chemistry of catalysis and energy materials and electron microscopic analysis of advanced materials.

Zou Xu, Ph.D. graduated from College of Chemistry, Jilin University, under the supervision of Professor Li Guodong. In 2020, he was selected into the "Ding Xin Scholar" support program of Jilin University to carry out postdoctoral work, and his tutor was Professor Zheng Weitao. Up to now, the first (including one)/correspondent has published 8 research papers in Adv. Mater., J. Energy Chem, Angew. Chem. Int. Ed., Adv. Energy Mater. and other important academic journals. Among them, Adv. Mater was cited for more than 340 times and was selected as the "highly cited paper" of ESI. In addition, we applied for two invention patents in China. He presided over 3 scientific research projects, such as youth projects and doctoral programs (first-class).

abstract

The oriented two-dimensional porous nitrogen-doped carbon embedded with CoS2 and MoS2 nanosheets is a highly efficient bifunctional electrocatalyst. The hierarchical structure ensures fast mass transfer capacity in improving the electroc atalytic activity. And the greatly increased specific surface area is beneficial to expose more electrocatalytically active atoms. For oxygen evolution reaction (OER) and hydrogen evolution reaction (HER) tests in 1 mol/L KOH solution, only 194 and 140 mV overpotential are required to achieve a current density of 10 mA/cm2, respectively. Our research provides an effective strategy for synergizing the individual components in nanostructures for a wide range of electrocatalytic reactions.

Brief introduction of periodicals

Frontiers of Optoelectronics (FOE) is one of the English academic periodicals of Frontiers series, which is published by the Ministry of Education, Higher Education Press, and published overseas by Springer Publishing Company. Gong Qihuang from Peking University and Professor Zhang Xinliang from Huazhong University of Science and Technology are co-editors.

Its purpose is to introduce the latest research results and frontier progress in the international optoelectronics field, and strive to become an important information platform for researchers in this field to conduct rapid academic exchanges with their counterparts at home and abroad. The journal is co-sponsored by Higher Education Press, Huazhong University of Science and Technology and chinese optical society, and the organizer is Wuhan Optoelectronic National Research Center. FOE periodicals have been collected by Emerging Sources Citation Index (Esci), EI Compendex, Scopus, Inspec, Google Scholar, CsA, Chinese Science Citation Database (CSCD), OCLC, Scimago, Summer by Proquest, etc. In 2019, it was selected as the echelon periodical project of China Science and Technology Journals Excellence Action Plan.

Frontier series of English academic journals

Frontiers, a series of English academic journals sponsored by the Ministry of Education and Higher Education Press, was officially founded in 2006 and distributed to the whole world in online and print editions. The series of periodicals includes four topics: basic science, life science, engineering technology and humanities and social sciences. It is the most extensive English academic periodical group in China, of which 13 are included by SCI, and others are also included by A&HCI, Ei, MEDLINE or international authoritative retrieval systems of corresponding disciplines, which has certain international academic influence. The series of periodicals adopt online priority publishing method to ensure that articles are published at the fastest speed.

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Domestic HPV vaccine opens in Shenzhen! The price is about half cheaper than that of imports, which can be paid by medical insurance card.

On-site inoculation of domestic bivalent HPV vaccine in Tangwei Social Health Center of Fenghuang Street.

See Shenzhen Client Shenzhen News Network on July 1, 2020. (See Shenzhen Client, Shenzhen News Network reporter Liu Mengting Tang Liling)The first batch of domestic bivalent cervical cancer vaccine in Shenzhen has arrived!At 10: 55 am on July 1, Ms. Li, 41, was vaccinated with a domestic bivalent HPV vaccine with her friends at Tangwei Social Health Center, Fenghuang Street, Guangming District, Shenzhen. This is the first shot made by Shenzhen after the vaccine, which is completely produced by China with independent intellectual property rights, was approved for listing.

It is reported that Ms. Li made an appointment through the information sent by Tangwei Social Health Center on June 30, and the friends who came with her also vaccinated the domestic bivalent HPV vaccine after Ms. Li was vaccinated.

Zhu Ziyin, a staff member of Tangwei Social Health, said that on June 30, a vaccination notice was issued in the community of social health, and 12 people made an appointment in half an hour, and a total of 20 vaccines were prepared. The medical insurance card can be used for vaccination in this social health center, and the medical insurance card must be a first-class user. The account with a balance of more than 6387.85 yuan in the card can directly deduct the domestic bivalent HPV vaccination fee with the medical insurance card. "The social health center is regularly vaccinated against cervical cancer every Wednesday. You don’t need to make an appointment. You can go directly to the site to get the vaccination." She added.

The reporter learned from the Shenzhen Center for Disease Control and Prevention that up to now, only two social health centers in Shenzhen, Tangwei Social Health Service Center and Xinwei Social Health Service Center, have purchased domestic bivalent HPV vaccines. The reporter selected one of them to understand the vaccination situation at this stage.

The price of bivalent HPV vaccine is 329 yuan, which can resist about 85% of carcinogenic virus types.

Cervical cancer is one of the most common malignant tumors of female reproductive system in China. The data shows that in 2015, there were about 100,000 new cases of cervical cancer in China, with about 30,000 deaths, and about 84 people died of cervical cancer every day. More seriously, the incidence of cervical cancer is younger, and the proportion of patients under 35 years old is increasing year by year.

It is reported that tests in European and American countries have found that HPV16 and HPV 18 are carcinogenic viruses, which cause about 70% of cervical cancer. In China, these two viruses are closely related to 84% of cervical cancer due to ethnic differences. Vaccination as soon as possible can effectively avoid the invasion of these two most important carcinogenic viruses and reduce the risk of cervical cancer.

Completing HPV vaccination is one of the effective means to prevent cervical cancer. The bivalent HPV vaccine is aimed at HPV16 and HPV18 oncogenic viruses. At present, the price of a single domestic vaccine is 329 yuan/needle. Vaccinate two doses at the age of 9 ~ 14, the immunization program is "0-6", and the second dose is vaccinated within 6 months, including the service fee of 708 yuan; Women aged 15-45 years were vaccinated with three injections, and the immunization program was "0-1-6". The second injection was given one month after the first injection, and the third injection was finished within six months. The total cost was 1,062 yuan.

It is understood that the import of bivalent vaccine requires 580 yuan for each needle (three shots are required); The tetravalent vaccine costs 798 yuan per needle (three needles); Nine-valent vaccine needs 1298 yuan per needle (three needles); The domestic bivalent vaccine is priced at 329 yuan per needle (two needles in young age and three needles over 15 years old). Compared with imported vaccines, the domestic bivalent vaccine vaccination price is nearly half cheaper.

On-site inoculation of domestic bivalent HPV vaccine in Tangwei Social Health Center of Fenghuang Street.

Who: 9-14 years old is the best age for HPV vaccination.

Cervical cancer is the most common malignant tumor in women after breast cancer. According to the statistics of the World Health Organization in 2018, there are about 570,000 new cases of cervical cancer and about 311,000 deaths worldwide every year. There are about 106,000 new cases and 48,000 deaths in China every year.

According to public information, in 2018, the World Health Organization called for the global elimination of cervical cancer. The vaccination coverage rate of girls aged 9-14 reached 90%, while the vaccination rate of girls aged 9-14 in China was less than 0.05%. In response to this incident, the National Health and Health Commission and other 10 departments jointly formulated the Healthy China Action-Implementation Plan for Cancer Prevention and Control (2019-2022), which strengthened the scientific propaganda of human papillomavirus vaccine (HPV vaccine) vaccination, implemented cancer prevention and control actions, promoted vaccination of school-age people, and effectively safeguarded the health of the broad masses of the people.

Cervical cancer is mainly caused by human papillomavirus (HPV) infection, and it is a preventable cancer. The preventive measures are cervical cancer vaccination and cervical cancer screening. It is generally believed that HPV vaccination is best before the first substantive sexual contact of women-the main route of HPV infection is sexual transmission. Inoculation after infection will not give full play to the vaccine effect. Accordingly, the World Health Organization has designated 9-14 years old as the best vaccination age.

The higher the titer of HPV vaccine, the better? Expert: Not really.

The bivalent vaccine is suitable for women aged 9-45, and the tetravalent vaccine is suitable for women aged 20-45. Women over 26 years old and 6 months old can also choose to take bivalent or tetravalent HPV vaccine to protect themselves.

"Price" represents the preventable virus species. Bivalent HPV vaccine can prevent more than 70% of cervical cancer; Tetravalent HPV vaccine can prevent more than 70% of cervical cancer and more than 90% of genital warts; Nine-valent HPV vaccine can prevent more than 90% of cervical cancer and more than 90% of genital warts.

"If we only make a simple judgment from the price, it will aggravate the tension of the nine-valent vaccine. Women aged 16 to 26 years and 6 months are suitable for the three HPV vaccines. It is recommended to analyze rationally and choose the vaccine that suits them." Experts from Shenzhen CDC said that the World Health Organization clearly pointed out in 2017 that the available evidence shows that bivalent, tetravalent and nonavalent vaccines have no difference in immunogenicity and effectiveness in preventing HPV-related cervical cancer of types 16 and 18, and all three vaccines can prevent most cervical cancers. The bivalent HPV vaccine has a higher infection prevention rate for the domestic population, reaching 84.5%, which is higher than the global average. If the purpose is to prevent cervical cancer, bivalent vaccine can fully meet the demand.

Experts also said that compared with the nine-valent vaccine, the two-valent vaccine and the four-valent vaccine have outstanding advantages, such as high cost performance, being paid by medical insurance and wide applicable age. Women of school age can make rational choices according to their actual situation.

About domestic bivalent HPV vaccine, you need to know

1. What kind of people are suitable for vaccination?

A: HPV vaccination is best before women have their first substantive sexual contact. The recommended age in the United States is 9 ~ 26 years old. The recommended vaccination age of bivalent vaccine is 9 ~ 25 years old, that of tetravalent vaccine is 20 ~ 45 years old, and that of nine-valent HPV vaccine is suitable for women aged 16 ~ 26.

2. Is it necessary for married and fertile women to be vaccinated with HPV?

A: Adult women who have had sex may have been infected with HPV, but HPV infection is limited to the inner layer of mucosal epithelium and will not induce a strong immune response. About 50% of women can detect antibodies after natural infection, but the titer is low, which is not enough to protect against reinfection. Therefore, it is necessary for married and fertile women to be vaccinated against cervical cancer.

3. Can pregnant women and lactating women be vaccinated? What should I do if I get pregnant after vaccination?

A: At present, there is no relevant data on vaccination of pregnant women and lactating women, and it is not recommended for pregnant women and lactating women to be vaccinated against cervical cancer for the time being. In fact, the harm of HPV is not as great as imagined. This part of women can wait for a while, and it is not too late to get HPV vaccine after the fetus is born and weaned.

The vaccine has not been found to have adverse effects on the fetus. Therefore, if you are pregnant unexpectedly within 6 months after vaccination, you can closely observe the pregnancy.

4. What is the difference between bivalent, tetravalent and nonavalent vaccines?

A: At present, there are three kinds of HPV vaccines listed in the world: bivalent, tetravalent and nine-valent. "Valence" represents the type of virus that the vaccine can prevent. Bivalent vaccine can prevent HPV16 and HPV18 virus infection. Tetravalent vaccine can prevent HPV infection of types 6, 11, 16 and 18. Nine-valent vaccine is aimed at nine subtypes of HPV6, 11, 16, 18, 31, 33, 45, 52 and 58. International research data show that the nine-valent vaccine can prevent 90% of cervical cancer.

5. Some people will feel dizzy and sick after being vaccinated with HPV vaccine. What is the current monitoring of adverse reactions of HPV vaccine?

A: Some women may have headache, fatigue and local reactions after being vaccinated with cervical cancer vaccine, such as pain, redness, itching, numbness, etc., but the data shows that people aged 9-45 are generally well tolerated after being vaccinated with HPV vaccine. At present, there are no vaccine-related deaths and teratogenic cases, but the safety testing of vaccines after large-scale marketing is still going on.

6. Can the current domestic and imported HPV vaccines guarantee lifelong immunity after vaccination?

A: HPV vaccine is still a new thing in the field of vaccine. It was born less than 20 years ago. From the international and domestic data, after the vaccination is completed according to the process, there is no need for replanting. But whether it is effective for life or not requires long-term observation to be clear.

7. Is it necessary to have regular screening after HPV vaccination?

A: Almost all cervical cancers are related to HPV, among which HPV types 16 and 18 are closely related to cervical cancer, and other types are 31, 33, 35, 39, 45, 51, 52, 58 and 59. At present, the best vaccine developed is the nine-valent cervical cancer vaccine, covering nine high-risk subtypes of HPV. These nine HPV subtypes caused 95% of cervical cancer cases, but 5% of HPV strains were still not covered by vaccine. Therefore, regardless of whether they have been vaccinated or not, it is recommended that women aged 18-65 should be screened once every 1-3 years.

China’s first COVID-19 mRNA vaccine was approved to start clinical trials.

Xinhua News Agency, Beijing, June 25th (Zhuang Yingna, Shao Longfei) The novel coronavirus mRNA vaccine (ARCoV), which was jointly developed by the Institute of Military Medicine of the Academy of Military Sciences and local enterprises, was officially approved by clinical trials in National Medical Products Administration on the 19th. This is the first COVID-19 mRNA vaccine approved for clinical trial in China.

Since the outbreak of the COVID-19 epidemic, the Institute of Military Medicine of the Academy of Military Sciences has deployed emergency scientific research to tackle key problems, and at the same time promoted the research and development of vaccines in COVID-19 with multiple technical routes. COVID-19 mRNA vaccine made in China is another high-tech vaccine variety approved for clinical trial after recombinant COVID-19 vaccine (adenovirus vector) in our hospital.

According to Qin Chengfeng, the project leader and researcher of the institute, mRNA vaccine is a new vaccine form in recent years. Its basic principle is to introduce mRNA expressing antigen target into the body through a specific delivery system, express protein in the body and stimulate the body to produce specific immune response, thus enabling the body to obtain immune protection.

Development and innovation of the concept of "one village, one product"

  The movement of "one village, one product" originated in Oita Prefecture in southwestern Japan in the late 1970s. After nearly 30 years’ practice, it shows that it is a model of making full use of local potential resources and capital to develop local economy with remarkable results. Under the new situation, it is of great practical significance to further understand the movement of "one village, one product" and take the development of "one village, one product" as a strategic measure for the construction of modern agriculture and new socialist countryside in China.


  First, the main achievements and practices of the development of "one village, one product"


  1. Cultivate leading industries and build a new platform for expanding regional economy.


  In the process of developing "one village, one product", all localities rely on resources for development, and take the road of "one household with many households, many households with the whole village, one village with many villages, and many villages are connected into pieces" by virtue of their characteristics, thus cultivating leading industries with their own characteristics, promoting industrial agglomeration and accelerating the formation of advantageous industrial areas. Professional villages and towns with industrial characteristics have accounted for more than 60% of the total number of villages and towns in Nanchang City, Jiangxi Province, and the number of "one village, one product" professional villages (natural villages) has grown to 236, and efforts have been made to build eight characteristic planting and breeding demonstration bases with specialization, scale and standardization as their advantages, providing a broad space for farmers to display their talents.


  2. Combined with agricultural industrialization, open up new ways for the development of agricultural organizations


  All localities pay attention to market development, plan the development of "one village, one product" according to the idea of industrialization, and cultivate various industrialized organizations such as leading enterprises and professional cooperatives in various forms and ways, which promotes the integrated operation of production, processing and sales and improves the degree of agricultural organization. Shaanxi has cultivated 80 strong villages, 5,000 large households and a number of sericulture processing enterprises. Relying on the support of strong villages and large households and driven by leading enterprises, it has built 70,000 mu of high-efficiency close-planting mulberry gardens and raised 200,000 silkworms, achieving a comprehensive income of 500 million yuan for sericulture production, 1 billion yuan for processing industry and 1.5 billion yuan for sericulture industry.


  3. Close to standardized production and form new measures for agricultural product quality and safety.


  In the process of developing "one village, one product", all localities started from the production link, actively promoted agricultural standardized production, promoted agricultural economical production, clean production, safe production and sustainable development, and effectively guaranteed the quality and safety of agricultural products. In 2006, the leading products of 17,030 specialized villages passed the national certification of pollution-free agricultural products or green food and organic food; There are 10971 professional villages with registered trademarks; There are 4154 professional villages that have won famous brand products at or above the provincial level; There are 2992 professional villages protected by geographical indication products. Yangshan Peach in Wuxi City, Jiangsu Province, has a planting area of more than 30,000 mu, and implements standardized management in the whole process of production, packaging, storage and transportation. The products have passed the organic food certification, won the title of "China Famous Brand Agricultural Products" and obtained the protection of geographical indications products, and the price is more than twice that of ordinary products. Heilongjiang "Wuchang Rice" has obtained the highest quality certification of "China Famous Brand Product" and is exported to both domestic and foreign markets.


  4. Expand various functions of agriculture and create a new bright spot of rural economic development.


  On the premise of ensuring the effective supply of agricultural products, all localities actively develop the functions of agriculture such as ecological protection, leisure and sightseeing, and cultural inheritance, vigorously develop environmental protection agriculture focusing on purifying the environment and conserving water sources, cultural agriculture focusing on promoting folk culture and inheriting farming civilization, and experience agriculture focusing on eating farm meals and doing farm work, which has cultivated new highlights in rural economic development. There are more than 50 farmers engaged in the production and processing of gongs and drums in Shangchuankou Village, Yangcun Township, Yangling District. Among them, 28 farmers have developed from the initial family workshop to a processing enterprise with a certain scale, and gathered along Yangwu Road, forming a spectacular gongs and drums processing street. The processed "Xinsheng brand" bronzes, "Weifeng brand" gongs and drums and "Hongda brand" cowhide drums are famous in the northwest bronze drum musical instrument industry.


  5. Cooperate with rural labor force and expand new channels for farmers to increase their income.


  All localities insist on proceeding from reality, give full play to their resource advantages, make agriculture suitable, industry suitable and business suitable, make leading industries bigger and stronger, and vigorously develop related industries such as processing, transportation and marketing, catering, etc., thus forming a situation of "one industry is thriving and all industries are flourishing", which not only extends the industrial chain, but also broadens employment channels and promotes farmers’ income. By the end of 2006, there were 43,433,300 employees in 41,293 specialized villages in China, accounting for 8.62% of the total number of rural employees. The per capita net income of farmers reached 4,560 yuan, 27% higher than that of farmers in China. There are 639 specialized villages such as Pearl Village, Citrus Village, Tea Village, Ramie Village and Flower Village in Changde City, Hunan Province, with nearly one million farmers. The per capita net income of farmers in specialized villages is 4,035 yuan, which is 785 yuan higher than that of farmers in the whole city.


  Second, the new requirements for developing "one village, one product" under the new situation


  1. Accurately grasp the development law of "one village, one product". First of all, we must respect the laws of nature, choose the most suitable agricultural products for local production to develop leading industries, and develop and cultivate "fine products" or "fist products" with obvious local characteristics that best reflect local advantages. Secondly, we must adhere to the market, and the characteristic agricultural products must meet the market consumption demand and have broad market space and prospects. Only in this way can such "fine products" successfully occupy the consumer market and create the best possible economic benefits. Thirdly, a moderate scale must be formed as soon as possible. Only large-scale operation can effectively promote the application of new varieties, new technologies and new machines and tools, truly realize regional layout, specialized production and intensive management, and enlarge the scale of featured products with market prospects. Fourth, we must take the road of industrialized operation, cultivate leading enterprises around the development of characteristic agricultural products, and establish an effective market linkage mechanism of "one village, one product" through leading enterprises to link production, storage, transportation, processing and sales on the spot, so as to enhance product level and market competitiveness. Finally, we can not only make full use of agricultural resources, but also integrate social elements of a place’s history, culture and customs into products, so that traditional products can form unique and competitive emerging industries.


  2. Deeply understand the important role of "one village, one product" in modern agriculture and new rural construction. "One village, one product" is based on adhering to the household contract management system, and through the implementation of contiguous production in one village or more villages, it realizes decentralized small production and integrated large-scale operation under the existing system, which is conducive to concentrating production factors and improving supporting facilities, and provides favorable conditions for agricultural intensification, standardization, mechanization and industrial production. "One village, one product" has promoted the development of agriculture and rural economy, increased farmers’ income, and accelerated the pace of getting rid of poverty in some places. It has become a strategic measure to promote the construction of new countryside, a strategic starting point for agricultural departments at all levels to build new countryside, and a strategic basis for sinking the focus of work to villages and ensuring the effectiveness of new rural construction.


  3. Update the development concept of "one village, one product". The development of "one village, one product" means the development of agricultural block economy through specialized production and industrialized management. Compared with traditional agriculture, its internal law, organizational form and development mode have changed greatly. We must change our development concepts and ways of thinking, strengthen our sense of innovation according to the requirements of modern agriculture, adhere to the concept of developing regional economy to guide the development of "one village, one product", accelerate the agglomeration of production factors to advantageous production areas, accelerate the centralized contiguous development, and accelerate the integration of production, processing and marketing, trade, industry and agriculture. It is necessary to strengthen market awareness, promote the development of "one village, one product" with the concept of brand drive, and accelerate industrial upgrading.


  Third, the future development orientation of "one village, one product": relying on modern agricultural organizations to promote "one village, one product"


  Modern agricultural organization is an effective organizational carrier to promote the movement of "one village, one product", and the rural specialized production of "one village, one product" is an important industrial support for the existence and development of modern agricultural organization. Facing the new situation of developing modern agriculture and building a new socialist countryside, according to the actual situation in China and the characteristics of various places, we can consider the following practice modes:


  1. The organizational form of "market+sales association+farmers"


  Because it is difficult for scattered farmers to effectively develop the market, expanding the leading product market and reducing the sales risk is one of the important ways to extend the industrial chain of "one village, one product". In the practice of "one village, one product" in all parts of China, many professional sales associations have been developed, which has improved the degree of organization of farmers’ entry into the market, and realized the promotion of industrial development by sales and the increase of farmers’ income. For example, Xinying Township, Xiji County, Ningxia, led by large growers and traffickers, set up a potato sales association. According to the operating mechanism of "market+agricultural association+farmers", it opened up sales markets for farmers, provided sales information, unified prices, unified packaging and unified sales, and gradually formed a one-stop process of production, supply and marketing, which effectively promoted the development of "one village, one product" in the local area. In 2005, the sales association directly led 600 local farmers to enter the potato market, and the per capita income of farmers from potatoes accounted for 57.9% of the per capita net income of that year.


  2. Through the organizational form of "professional association+farmers"


  To a certain extent, professional associations can make up for the shortcomings of low degree of organization of farmers. Providing farmers with a variety of services before, during and after delivery through professional associations can effectively reduce farmers’ market transaction costs, overcome the lack of decentralized management of individual farmers, reduce market risks and guide farmers to develop in the direction of "one village, one product". For example, in the nine years since the establishment of Xinye Vegetable Cooperative in Henan Province, farmers have been actively provided with excellent varieties, experimental demonstrations, technical services, agricultural materials management and product sales, and the area of "Bijiu" cabbage has been driven to reach 140,000 mu, realizing the scale and standardization of agricultural production. The products are exported to 16 provinces, Japan, South Korea, Russia and other countries, and the per capita net income of members is more than 8,000 yuan, which is twice as high as that of vegetable farmers outside the cooperative.


  3. The organizational form of "leading enterprises+associations+bases+farmers"


  Through the establishment of agricultural associations, on the one hand, leading enterprises can effectively convey product standards and quality requirements to production farmers and obtain stable sources of raw materials. Farmers’ own associations can bargain with leading enterprises on behalf of farmers’ interests, realize the balance of interests of both sides, and thus promote the development of "one village, one product". For example, Yongxing Town, Suining, Sichuan Province is supported by the characteristic angelica dahurica industry, with Sichuan Yinfa Resources Development Co., Ltd. as the leader, and drives farmers to carry out standardized and large-scale planting of angelica dahurica according to the operation mode of "leading enterprises+associations+bases+farmers". The annual planting area of angelica dahurica is 3,200 mu, the output is 1.28 million kilograms, and the output value is 7.68 million yuan, accounting for 13% of the town’s total output value, which gradually promotes the development of "one village, one product".


  However, at present, the organizational forms of farmers’ professional associations and cooperative organizations in many places in China are not standardized; In many places, the development of farmers’ organizations is seriously lagging behind; Most of them face the problem of shortage of funds; Some agricultural associations and cooperatives have poor personnel quality, irregular management, imperfect systems and low development levels. Generally speaking, the degree of organization of farmers entering the market is still relatively low, and the development of "one village, one product" is restricted. In the future, we must pay attention to the following aspects:


  First, we should highlight the dominant position of farmers in construction and decision-making. To develop the "one village, one product" movement, promote the construction of farmers’ economic organizations, or rely on modern agricultural organizations to develop "one village, one product", we need to respect the wishes and choices of farmers under the specific provisions of the cooperative law, and the government needs to support and guide them without coercion and service without interference, highlight the main position of farmers in developing "one village, one product" and building farmers’ professional cooperatives, and truly form "people-run, people-managed and people-benefited"


  Second, we should strengthen government guidance and services. At present, the development of farmers’ economic organizations in China is in the primary stage, and the movement of "one village, one product" has just started. These two important areas are in urgent need of government support. We should give necessary policy support in finance, taxation and credit, and take various forms to solve the financial difficulties of farmers’ development of one village, one product. It is necessary to strengthen the guidance on the development of one village and one product, follow the market rules to guide the development of one village and one product, find typical models through pilot and demonstration, summarize typical models and give key support. Guide farmers and grassroots cadres to learn, practice and develop one village with typical experience.


  Third, we must vigorously cultivate rural talents who develop one village and one product. At present, the scientific, technological and cultural qualities of farmers in China are generally low. Among the rural labor force, 87.5% have junior high school education or below, of which 37.3% have primary school education or below. The biggest difficulty in developing modern agriculture in China is the bottleneck of rural human resources. Drawing on the experience of developing "one village, one product" abroad, it is necessary to take the cultivation of practical technical talents and leading talents in rural areas as a focus of rural work, especially to cultivate outstanding talents who are innovative and challenging to meet the needs of the times and play a leading role in leadership and demonstration.


  Fourth, we should establish a risk guarantee mechanism that relies on modern agricultural organizations to develop "one village, one product". Agriculture is a fragile industry, facing not only market risks but also natural risks. Relying on farmers’ economic organizations to develop "one village, one product" is bound to face the impact of natural disasters at any time. Therefore, on the basis of support, the government should formulate risk prevention and risk rescue mechanisms to protect and make up for the losses caused by the practice of "one village, one product" and all related links of agricultural economic organizations in market-oriented operation under force majeure.

Editor: Jufu

Summary of the work report of the Standing Committee of the Chinese People’s Political Consultative Conference |

  Xinhua News Agency, Beijing, March 4 (Xinhua) Wang Huning, Chairman of Chinese People’s Political Consultative Conference, said on behalf of the Standing Committee of the National Committee of the Chinese People’s Political Consultative Conference (CPPCC) at the opening meeting of the Second Session of the 14th CPC Central Committee in Chinese People’s Political Consultative Conference on the 4th that the CPPCC should adhere to the guidance of the Supreme Leader’s New Era Socialism with Chinese characteristics Thought, fully implement the spirit of the 20th CPC National Congress and the Second Plenary Session of the 20th CPC Central Committee, adhere to the organic combination of the Party’s leadership, the United front and deliberative democracy, and perform its duties closely around promoting Chinese modernization. We will promote ideological and political guidance, actively advise and advise senior officials, build consensus extensively, strengthen self-construction, and gather wisdom and strength to achieve the goals and tasks of economic and social development throughout the year.

  — — Adhere to the Communist Party of China (CPC)’s overall leadership over the work of the CPPCC. Adhering to the Communist Party of China (CPC)’s leadership is the initial intention when the CPPCC was established, the fundamental political principle that the CPPCC has always adhered to for 75 years, and the fundamental guarantee for the development and progress of the CPPCC. We should carry forward fine traditions, keep in mind political responsibilities, adhere to the centralized and unified leadership of the Central Committee of the Communist Party of China with the Supreme Leader as the core, profoundly grasp the distinctive political attributes of the CPPCC system and CPPCC organizations, put the Communist Party of China (CPC)’s leadership through consultation and deliberation, democratic supervision, consensus building, investigation and study, unity and friendship, self-construction and other work, and turn the Communist Party of China (CPC)’s ideas into broad consensus and conscious actions from all walks of life to ensure that the Central Committee of the Communist Party of China’s decision-making arrangements are fully implemented in the CPPCC.

  — — Persevere in strengthening the party’s innovative theory. The Supreme Leader’s Socialism with Chinese characteristics Thought in the New Era is the guiding ideology that the Party and the country must adhere to for a long time. To study and implement this thought, we should always strive for constant progress, be faithful and be practical. It is necessary to consolidate and expand the achievements of thematic education, do a good job in deepening, internalizing and transforming, and regularly carry out members’ reading, theoretical study and political training, so as to better transform the learning results into political consultation, democratic supervision, participation in and discussion of state affairs, and into high-level performance of duties and service for high-quality development practice. Strengthen theoretical research, carry out discussions and exchanges around the scientific system, rich connotation and practical requirements of Socialism with Chinese characteristics Thought of the Supreme Leader in the new era, and promote political ability and performance of duties by theoretical study.

  — — Focus on the goals and tasks of Chinese modernization and contribute. It is necessary to give full play to the role of the CPPCC as a special consultative body, and closely follow the Central Committee of the Communist Party of China’s major decision-making arrangements, the country’s major strategic needs, and major practical issues in development. Implement the Chinese People’s Political Consultative Conference 2024 consultation plan approved by the Central Committee of the Communist Party of China, strengthen the basic role of special committees and the main role of members, give full play to the advantages of sectors, vigorously carry out investigation and research, enhance the foresight and accuracy of countermeasures and suggestions, expand the depth of deliberation and suggestions, and improve the effectiveness of democratic supervision.

  — — Committed to drawing the greatest concentric circle. It is necessary to give full play to the role of the CPPCC as the most extensive patriotic United front organization, grasp the characteristics and laws of mass work under the new situation, enhance the effectiveness of work such as unity, friendship and heart-to-heart exchanges, carry out in-depth work of members to contact the masses in different sectors and perform their duties of "serving the people", and assist the party and the government in publicizing policies, dispelling doubts, and promoting unity. Strengthen ideological and political guidance, and be good at inspiring, inspiring and inspiring people with the grand blueprint of Chinese modernization and vivid practice. Give full play to the role of the CPPCC in foreign exchanges and introduce the concept of building a community of human destiny.

  Wang Huning said that doing a good job in the work of the CPPCC in the new era and new journey has put forward new and higher requirements for our political ability and performance of our duties. It is necessary to implement the important requirements of the General Secretary of the Supreme Leader on "understanding the CPPCC, consulting, discussing politics well, observing discipline, stressing rules, and emphasizing conduct", emphasizing facts, doing practical work, and being pragmatic and effective. Implement the spirit of the eight central regulations and their detailed rules, overcome and correct formalism and bureaucracy, and show the energetic spirit of CPPCC members. We will deepen the construction of political organs, advocate the working attitude of striving for perfection and pursuing the ultimate, and implement them faithfully, resolutely, realistically and pragmatically, dare to do good deeds, and build a model organ that will reassure the party and satisfy the people.

Sell 93,900 yuan Changan Yidong PLUS high-energy version listed.

  [car home new car on the market] On June 1st,Changan Yidong PLUS High Energy Edition was officially launched.The price is 93,900 yuan.Changan Automobile also specially planned the "Changan Mid-year Car Carnival Festival". During the activity, the (|)PLUS High Energy Edition can enjoy a limited time trade-in subsidy of up to 31,000 yuan. In addition, users can also enjoy 0 down payment, 60 long loans, and 3 years and 6 basic maintenance.

Home of the car

Home of the car

Home of the car

Changan Automobile Yidong 2023 Enjoy Edition PLUS Blue Whale NE1.4T GDDCT Premium Edition

  In terms of appearance, the new car adopts a gradual grille of light and shadow, which is gradually distributed, and with the sharp LED light group, it adds points to the sense of movement of the whole car. In addition, the front part of the vehicle is decorated with red lines, which makes the visual effect more flexible. On the side of the car body, the car adopts a segmented waistline design, and a more curved line shape is adopted at the rear door position to make the rear of the car fuller. The tail of the new car is made of penetrating taillights and duckling tail spoiler. In terms of body size, the length, width and height of the new car are 4730/1820/1505mm and the wheelbase is 2700mm respectively.

Changan Automobile Yidong 2023 Enjoy Edition PLUS Blue Whale NE1.4T GDDCT Premium Edition

  In the interior part, the new car adopts the contrast design of interstellar black and nebula red, and is equipped with a suspended central control design and an integrated 10.25-inch high-definition LCD touch screen. In addition, the central control screen is tilted 10 to the main driver, so that the driver can control the screen function more conveniently. The car will also be equipped with Incall 3.0S intelligent interactive system to integrate communication, entertainment, security and other services.

  AI Xiaoan, an intelligent voice assistant, can query the weather, play music, navigate and so on. Users can also change the wake-up words according to their own preferences to achieve "visible and ready to speak". The navigation system of HKUST will be equipped with an online map of Gaode, which can provide route solutions according to real-time traffic information. In the process of driving, it can also continuously update the service area information through high-speed information flow, which is convenient to choose the appropriate stopping point according to its own situation. In terms of configuration, the car will match the Zhixing driver assistance system, equipped with four high-definition wide-angle cameras around the car body, bringing 360 high-definition panoramic images, 180 chassis perspective, and equipped with a driving recorder.

Changan Automobile Yidong 2023 Enjoy Edition PLUS Blue Whale NE1.4T GDDCT Premium Edition

  In terms of power, the high-energy version of Changan Yidong PLUS is equipped with the NE1.4T high-pressure direct injection engine of Blue Whale and the 7-speed wet dual-clutch gearbox of Blue Whale, which can output a maximum power of 118KW and a peak torque of 260 N m. The fuel consumption per 100 kilometers under WLTC comprehensive working conditions is 6.4L (Text/car home yaoyu)

Household pure electric compact SUV MG ES5 debuted.

  [New Car Launch in car home] On October 15th, MG ES5 made its debut, and the new car was renamed from "S5" to "ES5", which better highlighted its pure electric properties. Based on the pure electric architecture of SAIC "Xingyun", the car is positioned as a compact SUV for home use. There are three mileage options, namely 425km, 515km and 525km.

Home of the car

Home of the car

Home of the car

Home of the car

Home of the car

  As a family car, MG ES5 is obviously more sensitive in the use of family language. The front face has a closed shape, two sides are equipped with split light groups, an air inlet is arranged below the headlight, and the front enclosure presents a split air intake grille shape. In addition, the vehicle will also provide 7 exterior colors.

Home of the car

Home of the car

  The car side line extends from the far end of the headlight and spans the whole side, and the style belongs to the feminine category. The door handle has a conventional shape, and the roof is equipped with a luggage rack. The length, width and height of the MG ES5 are 4476mm/1849mm/1621mm respectively, and the wheelbase is 2730 mm. According to official data, the maximum usable area in the car can reach 4.24㎡.

Home of the car

Home of the car

  The rear design is also simple, and the penetrating taillights create a strong sense of layering, which makes the MG brand logo more eye-catching. The new car will have a 360-degree panoramic image and a rear parking radar.

Home of the car

Home of the car

  In the interior part, the center console uses a large screen and a sporty flat-bottomed steering wheel. Thanks to the panoramic skylight and light color design, the interior atmosphere is brighter and cleaner. The seat is made of leather, giving consideration to breathability and grade.

Home of the car

Home of the car

  In terms of power, the MG ES5 adopts the form of single motor rear drive. The maximum power of the motor is 125 kW, the maximum torque is 250 Nm, the acceleration time of 0-100km/h is officially announced as 8 seconds, and there are three kinds of battery capacities, and the corresponding CLTC pure battery life is 425km, 515km and 525km respectively. The chassis adopts the combination of front McPherson and rear multi-link independent suspension. According to the existing information, the positioning of the new car will be 100,000-150,000 products. (Text/car home Wang Hezhen)

Dressing up a new design language Toyota’s new RAV4 rendering exposure

A few days ago, Chezhi. com obtained a set of brand-new RAV4 renderings of Toyota from relevant channels. The new car will adopt the brand-new family design language, and it is expected to debut in the first quarter of next year at the earliest, and the domestic version is expected to be launched in the second half of next year.

As a replacement model, Toyota’s new RAV4 will adopt a new family design language. Among them, the front face is similar to the Camry currently on sale. The interior of the headlights adopts LED daytime running lights similar to "boomerang" style, and the middle of the headlights on both sides is connected by air inlets, which has a visual stretching effect. In addition, the bottom will be equipped with a matrix lower grille, and the silver protective plate at the bottom will enhance the sense of security to some extent.

The overall shape of the tail continues the current round and full design technique, and it is equipped with the popular penetrating taillights, and the bottom is surrounded by a huge black back, which is also full of security.

In terms of interior, although no more information is disclosed at present, it is speculated that the new car may also adopt the same design elements as the current Camry, equipped with LCD digital instrument panel and large-size floating LCD central control panel.

In terms of power, the new car will provide a 2.5L oil-electric hybrid system and a 2.5L plug-in hybrid system.

Zhong Nanshan’s speech was connected with two hot search teams to respond.

"Because there are no patients.

Phase III clinical trials can only be done abroad. "

Recently, Academician Zhong Nanshan.

Invited to attend the 2021 graduation ceremony of University of Science and Technology Shanghai.

One of his "Versailles" speeches

Connect two hot searches

Why does China’s vaccine research and development seem to be slow?

"Because there are no patients."

In a speech

Talking about the development of COVID-19 vaccine in China.

Zhong Nanshan said that 71 vaccines are being developed in China.

Nine of them are in phase III clinical trials.

Two of them were approved by the World Health Organization for emergency use.

It has been included in the emergency use list.

  △ Image source: Shanghai University of Science and Technology

Zhong Nanshan said:

"Because prevention and control are effective in China.

We can’t be in China.

Do the third phase clinical trial.

Because there are no more patients.

Therefore, phase III clinical trials can only be done abroad. "

Many netizens lamented.

"One mouth is old Versailles!"

"This Versailles is super like it!"

Team Zhong Nanshan responded:

Thanks to everyone who supports the fight against the epidemic with practical actions

This morning (July 6)

Academician Zhong Nanshan’s innovative research team

Official account @ Nanshan Breathe

Respond to this matter and rush to the hot search again.

Responded that

This kind of discourse is called Versailles by netizens.

In fact, we need everyone

Support you against the epidemic with practical actions.

Wear a mask and be socially isolated.

No spitting, timely vaccination.

Thank you to all the workers from all walks of life who participated in the fight against the epidemic.

And support you in fighting the epidemic with practical actions.

  Producer Wang Xingdong

  Editor-in-Chief Zhang Zhida

  Editor Wu Siyu Zhao Yuqi

Soak in the spring breeze under the sea of flowers and enjoy the spring breeze on foot —— A company of China Construction Eighth Bureau organized outdoor hiking activities.

In order to implement the requirements of the company’s "concentric circle" project, enrich the weekend life of employees and improve team cohesion, on March 16th, Yuexi Management Department of South China Company of China Construction Eighth Bureau organized an outdoor hiking activity with more than 50 participants.

This hiking activity is located in the beautiful Hengqin Huahai Corridor in Zhuhai, and you can stroll from the No.1 post station to the No.5 post station of Huahai Corridor to enjoy the romance of flowers and the sea. The whole walk is about 17 kilometers, and the time is about 4 hours.

There are game tasks such as balloon beds, creative photo punching, etc. during the hiking process, so that participants can enjoy the beauty of the scenery and the fun of teamwork during the walking process.

In addition, this activity specially responded to the call of "Lei Fengyue" and carried out the volunteer activities of "learning from Lei Feng, cultivating new styles and picking up garbage". During the hiking process, everyone picked up the garbage along the way, so that the slogan "garbage does not land, the earth is more beautiful" was put into action.

It is reported that the First Company of China Construction Eighth Bureau has always attached importance to employees’ cultural and sports activities, continued to promote the "concentric circle" project, and set up a series of interest activity groups such as basketball, football, badminton and hiking, giving full play to the positive role of trade unions in serving employees and cohesive efforts, and constantly improving the happiness index of employees.

[Editor: Cai Donghai]