摘要：
Sr-doped LaMnO3 (LSM) which is the first-generation cathode for solid oxide fuel cells (SOFCs) has been tailored with Zn ions, aiming to achieve improved protonation ability for proton-conducting SOFCs (H-SOFCs). The new Sr and Zn co-doped LaMnO3 (LSMZ) can be successfully synthesized. The first-principle studies indicate that the LSMZ improves the protonation of LSM and decreases the barriers for oxygen vacancy formation, leading to high performance of the LSMZ cathode-based cells. The proposed LSMZ cell shows the highest fuel cell performance among ever reported LSM-based H-SOFCs. In addition, the superior fuel cell performance does not impair its stability. LSMZ is stable against CO2, as demonstrated by both in-situ CO2 corrosion tests and the first-principles calculations, leading to good long-term stability of the cell. The Zn-doping strategy for the traditional LSM cathode with high performance and good stability brings back the LSM cathode to intermediate temperatures and paves a new way for the research on the LSM-based materials as cathodes for SOFCs.
作者机构：
[郭聪; 李赛; 孙浩然; 吴鹏; 牛苏娟; 戴浩橦] School of Resource & Environment and Safety Engineering, University of South China, Hunan, Hengyang, 421001, China;Hunan Key Laboratory of the Rare Metal Minerals Exploitation and Geological Disposal of Wastes, Hunan, Hengyang, 421001, China;College of Chemistry and Chemical Engineering, University of South China, Hunan, Hengyang, 421001, China;[丁心科] Zhejiang Provincial Nuclear Industry yHuzhou, No. 262 Team, Zhejiang, 313000, China;[段先哲] School of Resource & Environment and Safety Engineering, University of South China, Hunan, Hengyang, 421001, China, Hunan Key Laboratory of the Rare Metal Minerals Exploitation and Geological Disposal of Wastes, Hunan, Hengyang, 421001, China
作者机构：
[邓芳] Department of Pathology, First Affiliated Hospital of University of South China, Hengyang, 421000, China;[刘思思; 谭华欣] Department of Biochemistry and Molecular Biology, School of Basic Medicine, Hengyang Medical School, University of South China, Hengyang, 421000, China;[贺睿敏] Department of Radiotherapy, Second Affiliated Hospital of University of South China, Hengyang, 421000, China
通讯机构：
[Tan, H.] D;Department of Biochemistry and Molecular Biology, China
作者机构：
[Chen Yao; Ya-xin Wu] Hunan Key Laboratory for the Design and Application of Actinide Complexes, School of Chemistry and Chemical Engineering, University of South China, Hengyang, China;School of Chemistry and Chemical Engineering, Central South University, Changsha, China;[Chang-zhu Li] State Key Laboratory of Utilization of Woody Oil Resource (Hunan Academy of Forestry), Changsha, China;[Jing-jing Xiao] Hunan Key Laboratory for the Design and Application of Actinide Complexes, School of Chemistry and Chemical Engineering, University of South China, Hengyang, China<&wdkj&>School of Chemistry and Chemical Engineering, Central South University, Changsha, China<&wdkj&>State Key Laboratory of Utilization of Woody Oil Resource (Hunan Academy of Forestry), Changsha, China
通讯机构：
[Chen Yao; Ya-xin Wu] H;Hunan Key Laboratory for the Design and Application of Actinide Complexes, School of Chemistry and Chemical Engineering, University of South China, Hengyang, China<&wdkj&>Hunan Key Laboratory for the Design and Application of Actinide Complexes, School of Chemistry and Chemical Engineering, University of South China, Hengyang, China
摘要：
The adsorption mechanism of O-isopropyl-S-[2-(hydroxyimino) propyl] dithiocarbonate ester (IPXPO) to chalcopyrite was investigated by using contact angle, in-situ atomic force microscopy (in-situ AFM), cyclic voltammetry (CV) and X-ray photoelectron spectroscopy (XPS). The results of contact angle and in-situ AFM demonstrated that IPXPO adsorbed on chalcopyrite increases surface hydrophobicity and roughness. It was found by CV experiments that a layer passive film was formed. The results of XPS spectra further revealed that the thiol S atom, oxime N atom, and O atom in the IPXPO molecule might react with copper atoms to form Cu—S, Cu—N, and Cu—O bonds, respectively. An artificial mixed minerals flotation test indicated that under the condition of pH=6.79 and IPXPO initial concentration 5×10~(-5) mol/L, the flotation recovery of chalcopyrite reached about 90%, while for pyrite only 25%, suggesting that IPXPO is an excellent collector for flotation separation and enrichment of chalcopyrite.
作者机构：
[李文艺] College of Chemistry and Materials Science, Hengyang Normal University, Hengyang, 421008, China;[何卫民] School of Chemistry and Chemical Engineering, University of South China, Hengyang, 421001, China
通讯机构：
[He, W.] S;School of Chemistry and Chemical Engineering, China
通讯机构：
[Zheng Wang] D;[Wei-Min He] S;School of Chemistry and Chemical Engineering, University of South China, Hengyang 421001, China<&wdkj&>Department of Chemistry and Bioengineering, Hunan University of Science and Engineering, Yongzhou 425199, China
作者机构：
[Li, Yuanyuan; Duan, Chongxiong; Hu, Fei] Foshan Univ, Sch Mat Sci & Hydrogen Engn, Foshan 528231, Peoples R China.;[Yu, Yi; Xi, Hongxia; Xiao, Jing] South China Univ Technol, Sch Chem & Chem Engn, Guangzhou 510640, Peoples R China.;[Yang, Pengfei] Univ South China, Sch Chem & Chem Engn, Changsha 421001, Hunan, Peoples R China.
通讯机构：
[Fei Hu; Hongxia Xi] S;School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou, 510640, China<&wdkj&>School of Materials Science and Hydrogen Engineering, Foshan University, Foshan, 528231, China
关键词：
Metal-organic frameworks;Environmental and energy issues;Industrial production;Green applications
作者：
Xiaobo Hu;Tingting Duan;Zhuan Wu;Yuqing Xiong;Zhaohui Cao
期刊：
生物化学与生物物理学报,2021年53(7):958-960 ISSN：1672-9145
通讯作者：
Cao, Z.
作者机构：
[Zhaohui Cao; Yuqing Xiong; Tingting Duan; Zhuan Wu; Xiaobo Hu] Department of Biochemistry and Molecular Biology,Hengyang Medical School,University of South China,Hengyang 421001,China
通讯机构：
[Cao, Z.] D;Department of Biochemistry and Molecular Biology, China
关键词：
HOMEOSTASIS;OBESITY;METABOLISM
摘要：
In the past few decades, obesity is in an increasingly prevalent metabolic disease worldwide, posing the greatest threat to human health. Understanding the pathways involved in obesity may lead to the development of new intervention and therapeutic strategies. It is well known that a chronic positive energy balance results in obesity and body fat mass is increased when energy intake exceeds energy expenditure [1]. Emerging studies have revealed that obesity is associated with chronic inflammation and the immune responses, which is also an aspect of consideration of immunometabolism [2]. Of note, macrophages, the most abundant immune cells in white adipose tissue (WAT), maintain metabolic homeostasis by regulating glucose utilization, lipid storage, and energy expenditure by adipocytes [3-5]. Additionally, numerous studies have shown that impaired pro-inflammatory adipose macrophages improve obesityinduced insulin resistance and glucose intolerance in the obese state and anti-inflammatory macrophages maintain insulin-sensitive environment in the lean state [6,7]. Thus, it is important to explore how these immune cells in adipose maintain metabolic homeostasis, which will provide an insight into the understanding of how current therapeutics influence metabolism.
作者机构：
[Teng, Fan; Jin, Xue-Feng; Gui, Qing-Wen; Li, Zhou-Chao; Xiong, Zhi-Yuan] Hunan Agr Univ, Coll Chem & Mat Sci, Changsha 410128, Peoples R China.;[He, Wei-Min; Lin, Ying-Wu] Univ South China, Sch Chem & Chem Engn, Hengyang 421001, Peoples R China.;[Cao, Zhong] Changsha Univ Sci & Technol, Hunan Prov Key Lab Mat Protect Elect Power & Tran, Changsha 410114, Peoples R China.
通讯机构：
[Wei-Min He] S;School of Chemistry and Chemical Engineering, University of South China, Hengyang 421001, China
关键词：
Green chemistry;Visible light;External photosensitizer-free;Tandem reaction;2-MeTHF
摘要：
An efficient and eco-friendly protocol for synthesizing difluoromethylated oxindoles through a visiblelight induced one-pot tandem reaction of N-arylacrylamides, difluoroacetic acid and Ph I（OAc）2 was developed. This reaction proceeded in the absence of any additive, base, metal-catalyst and external photosensitizer, using cheap and easily available CHF2CO2H as the difluoromethylation reagent and bulk biomass-derived 2-Me THF as the sole solvent. 26 Examples of N-arylacrylamide substrates were investigated, and all of them successfully underwent difluoromethylation to deliver the target products in good to excellent yields.
作者机构：
[李文艺; 唐胤恒] College of Chemistry and Materials Science, Hengyang Normal University, Hengyang, 421000, China;[陈锦杨; 欧阳文韬; 陆雨函; 何卫民] School of Chemistry and Chemical Engineering, University of South China, Hengyang, 421001, China
通讯机构：
[Chen, J.; He, W.] S;School of Chemistry and Chemical Engineering, China
摘要：
An eco-friendly,sustainable and practical method for the efficient preparation of 5-organylselanyl uracils through the electrochemical selenylation of uracils and dio rganyl diselenides at room temperature under oxidant-and external electrolvte-free conditions was developed.
