Visible light-induced Z-scheme V_2O_5/g-C_3N_4 heterojunction catalyzed cascade reaction of unactivated alkenes
作者：
Gui, Qing-Wen;Teng, Fan;Yu, Peng;Wu, Yi-Fan;Nong, Zhi-Bin;...
期刊：
催化学报(英文) ,2023年44(01):111-116 ISSN：0253-9837
通讯作者：
He, Wei-Min(weiminhe@usc.edu.cn)
作者机构：
[Yu, Peng; Teng, Fan; Nong, Zhi-Bin; Yang, Long-Xi; Gui, Qing-Wen; Wu, Yi-Fan] Hunan Agr Univ, Coll Chem & Mat Sci, Changsha 410128, Hunan, Peoples R China.;[He, Wei -Min; Yang, Tian-Bao; Chen, Xiang] Univ South China, Sch Chem & Chem Engn, Hengyang 421001, Hunan, Peoples R China.
通讯机构：
[He, W.-M.] S;School of Chemistry and Chemical Engineering, Hunan, China
关键词：
Cascade reaction;g-C3N4;Green chemistry;Mild condition;Ring-fused quinazolinone
摘要：
The Z-scheme V2O5/g-C3N4 heterojunction was firstly applied in heterogeneous visible light-induced cascade reaction for constructing phosphoryled ring-fused quinazolinones. Both the photogenerated hole and photogenerated electron played a vital role in the radical cascade process. © 2023 Dalian Institute of Chemical Physics, the Chinese Academy of Sciences
语种：
英文
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The future of organic electrochemistry current transfer
作者：
Zhou, He-Yang;Tang, Hai-Tao;He, Wei-Min
期刊：
催化学报(英文) ,2023年46(3):4-10 ISSN：0253-9837
通讯作者：
Tang, HT;He, WM
作者机构：
[Tang, Hai-Tao; Zhou, He-Yang; Tang, HT] Pharmaceut Sci Guangxi Normal Univ, Sch Chem, State Key Lab Chem & Mol Engn Med Resources, Guilin 541004, Guangxi, Peoples R China.;[He, Wei-Min; He, WM] Univ South China, Sch Chem & Chem Engn, Hengyang 421001, Hunan, Peoples R China.
通讯机构：
[Tang, HT ] P;[He, WM ] U;Pharmaceut Sci Guangxi Normal Univ, Sch Chem, State Key Lab Chem & Mol Engn Med Resources, Guilin 541004, Guangxi, Peoples R China.;Univ South China, Sch Chem & Chem Engn, Hengyang 421001, Hunan, Peoples R China.
关键词：
Organic electrochemical synthesis;Electron transfer;Redox reaction
摘要：
The electrostatic attraction between electrons and nuclei is a fundamental force in electrochemistry. This force drives the interaction between electrons and nuclei, providing the potential for redox reactions. As a result, it is the basis of redox chemistry. In recent years, organic electrochemistry has made significant progress in oxidative hydrogen evolution coupling and sacrificial anode electroreduction, thanks to its efficient and environmentally friendly capacity to create reactive intermediates. This paper focuses on several areas in the field of electrochemistry, including optimizing electrode materials, developing new electrolytic catalysts, paired electrolysis, photoelectrocatalysis, bioelectrosynthesis, and artificial intelligence-assisted electrosynthesis. The aim is to optimize reaction mechanisms and explore interdisciplinary combinations. © 2023 Dalian Institute of Chemical Physics, the Chinese Academy of Sciences
语种：
英文
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External electrolyte-free electrochemical one-pot cascade synthesis of 4-thiocyanato-1H-pyrazoles
作者：
He, Wei-Bao;Zhao, Sai-Jie;Chen, Jing-Yang;Jiang, Jun;Chen, Xiang;...
期刊：
中国化学快报(英文) ,2023年34(2):107640 ISSN：1001-8417
通讯作者：
Xinhua Xu<&wdkj&>Wei-Min He
作者机构：
[He, Wei-Bao; Zhao, Sai-Jie; Xu, Xinhua] Hunan Univ, Coll Chem & Chem Engn, Changsha 410082, Peoples R China.;[Chen, Jing-Yang; He, Wei-Min; Jiang, Jun; Chen, Xiang] Univ South China, Sch Chem & Chem Engn, Hengyang 421001, Peoples R China.
通讯机构：
[Xinhua Xu] C;[Wei-Min He] S;College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China<&wdkj&>School of Chemistry and Chemical Engineering, University of South China, Hengyang 421001, China
关键词：
Green chemistry;Electrochemistry;Cascade reaction;Multicomponent reaction;Thiocyanato
摘要：
A practical synthetic method for 4-thiocyanato-1 H -pyrazoles through the electrochemical cascade reaction of hydrazines , 1,3-diones and NH 4 SCN under metal-, chemical oxidant- and external electrolyte-free conditions was established. Importantly, both a gram-scale synthesis of 4-thiocyanato-1 H -pyrazoles and five one-pot sequential transformations starting from hydrazine were successfully accomplished.
A practical synthetic method for 4-thiocyanato-1 H -pyrazoles through the electrochemical cascade reaction of hydrazines , 1,3-diones and NH 4 SCN under metal-, chemical oxidant- and external electrolyte-free conditions was established. Importantly, both a gram-scale synthesis of 4-thiocyanato-1 H -pyrazoles and five one-pot sequential transformations starting from hydrazine were successfully accomplished.
语种：
英文
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均苯四甲酸二酰亚胺拓展柱[6]芳烃与羧酸盐客体分子的络合性能研究
作者：
Cheng Lu;Zeng Fei;Wang Xiaofeng
期刊：
有机化学 ,2023年43(1):352-356 ISSN：0253-2786
通讯作者：
Zeng, F.;Wang, X.
作者机构：
[Wang Xiaofeng; Cheng Lu] Univ South China, Sch Chem & Chem Engn, Hengyang 421001, Hunan, Peoples R China.;[Zeng Fei] Hunan Univ Sci & Engn, Coll Chem & Biol Engn, Yongzhou 425199, Hunan, Peoples R China.
通讯机构：
[Zeng, F.] C;[Wang, X.] S;College of Chemical and Biological Engineering, Hunan, China;School of Chemistry and Chemical Engineering, Hunan, China
关键词：
柱芳烃;均苯四甲酸二酰亚胺;酸碱调控;主客体化学
摘要：
描述了均苯四甲酸二酰亚胺拓展柱[6]芳烃主体与羧酸盐客体分子在溶液中的络合性质,表明缺电子的主体分子与富电子的羧酸盐客体分子,通过分子间的弱相互作用力能够形成1:2的超分子络合物.此外,主客体络合物的形成与解离具有酸碱的环境响应性,并且该过程也可通过肉眼进行观察.
语种：
中文
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电子给体-受体复合物实现可见光诱导的自由基芳基化反应
作者：
易荣楠;何卫民
期刊：
有机化学 ,2022年42(8):2590-2592 ISSN：0253-2786
通讯作者：
Weimin, H.
作者机构：
[Rongnan Y.] Criminal Technology Department, Hunan Police Academy, Changsha, 410138, China;[Weimin H.] School of Chemistry and Chemical Engineering, University of South China, Hunan, Hengyang, 421001, China
通讯机构：
[Weimin, H.] S;School of Chemistry and Chemical Engineering, Hunan, China
关键词：
SUZUKI反应;芳基化反应;有机合成化学;HECK反应;过渡金属催化;天然产物全合成;电子给体;偶联反应
摘要：
芳基化反应长期以来备受有机合成化学工作者的关注,在药物修饰、天然产物全合成和功能材料开发中具有重要的研究意义与应用价值.在众多已开发的芳基化合成方法中,过渡金属催化芳基偶联反应得到了长足发展,比如Suzuki反应、Kumada反应、Negish反应和Heck反应等.然而,这些方法普遍存在需要过渡金属以及特定配体参与或反应温度较高等缺点.随着环境问题的日益严重和化石能源的日益枯竭,开发绿色环保的新型芳基化合成方法显得越来越重要.
语种：
中文
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金纳米团簇介导近红外光催化氧化官能化
作者：
易荣楠;何卫民
期刊：
有机化学 ,2022年42(5):1565-1566 ISSN：0253-2786
通讯作者：
He, W.
作者机构：
[易荣楠] Criminal Technology Department, Hunan Police Academy, Changsha, 410138, China;[何卫民] School of Chemistry and Chemical Engineering, University of South China, Hunan, Hengyang, 421001, China
通讯机构：
[He, W.] S;School of Chemistry and Chemical Engineering, Hunan, China
关键词：
有机合成反应;电子转移;金纳米团簇;有机光化学;光催化氧化;有机材料;光能转化;能量转移
摘要：
近年来,利用光作为绿色能源促进有机合成取得了十分可喜的进展,其在有机小分子合成及功能有机材料开发等方面发挥着越来越重要的作用[1].光催化有机合成反应中,光催化剂吸收光能通过和底物间的电子转移或者能量转移途径,最终将光能转化为化学能[2].目前所发展的一些使用较多的光催化剂,其最大吸收波长大多位于蓝光区域.而另一方面,由于发光二极管(LED)光源波长易于调节,具有相对高的光电转化效率且光衰低,因此在已报道的有机光化学合成反应中,使用的光源大多是蓝色LED.但对于蓝光促进的反应而言,随着反应规模的扩大,光线在溶液中的穿透深度不足,导致反应效率明显下降.因此,发展在更长波段区域(如近红外光)有吸收的新型光催化剂受到了越来越多研究者的关注[3].
语种：
中文
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Electrochemical Oxidative Cross-Dehydrogenative Coupling of Five-Membered Aromatic Heterocycles with NH_4SCN
作者：
Li Hongxia;Chen Peng;Wu Zhilin;Lu Yuhan;Peng Junmei;...
期刊：
有机化学 ,2022年42(10):3398-3404 ISSN：0253-2786
通讯作者：
He, W.;Peng, J.
作者机构：
[Li Hongxia; Peng Junmei] Univ South China, Sch Pharmaceut Sci, Hengyang 421001, Hunan, Peoples R China.;[Chen Jingyang; Chen Peng; Lu Yuhan; Wu Zhilin; He Weimin] Univ South China, Sch Chem & Chem Engn, Hengyang 421001, Hunan, Peoples R China.
通讯机构：
[Peng, J.; He, W.] S;School of Pharmaceutical Science, Hunan, China;School of Chemistry and Chemical Engineering, Hunan, China
关键词：
五元芳香杂环化合物;电化学合成;脱氢偶联反应;双作用;绿色化学
摘要：
本文报道了一种无化学氧化剂、无外加电解质条件下电化学促进的五元芳香杂环化合物（吡唑、咪唑、呋喃和噻吩）与硫氰酸铵发生氧化交叉脱氢偶联反应合成硫氰基五元芳香杂环化合物的方法。反应中，硫氰酸铵发挥着电解质和硫氰化试剂的双重作用，简化了反应体系。
语种：
中文
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Curcumin ameliorates H_2O_2-induced injury through SIRT1-PERK-CHOP pathway in pancreatic beta cells
作者：
Cao, Zhaohui;Wu, Zhuan;Duan, Tingting;Tang, Cifei;Huang, Di;...
期刊：
生物化学与生物物理学报(英文) ,2022年54(3):370-377 ISSN：1672-9145
通讯作者：
Hu, X.
作者机构：
[Cao, Zhaohui; Hu, Xiaobo; Tang, Cifei; Duan, Tingting; Huang, Di; Wu, Zhuan] Univ South China, Hengyang Med Sch, Dept Biochem & Mol Biol, Hengyang 421001, Peoples R China.;[Cao, Zhaohui; Hu, Xiaobo; Tang, Cifei; Duan, Tingting; Huang, Di; Wu, Zhuan] Univ South China, Hengyang Med Sch, Key Lab Ecol Environm & Crit Human Dis Prevent Hu, Hengyang 421001, Peoples R China.;[Wu, Zhuan] Guilin Med Univ, Affiliated Hosp 2, Cent Lab, Guangxi Hlth Commiss Key Lab Glucose & Lipid Meta, Guilin 541000, Peoples R China.
通讯机构：
[Hu, X.] D;Department of Biochemistry and Molecular Biology, China
关键词：
curcumin;ER stress;SIRT1;apoptosis
摘要：
Oxidative stress and endoplasmic reticulum (ER) stress play crucial roles in pancreatic β cell destruction, leading to the development and progression of type 1 diabetes mellitus (T1DM). Curcumin, extracted from plant turmeric, possesses multiple bioactivities such as antioxidant, anti-inflammatory and anti-apoptosis properties in vitro and in vivo. However, it remains unknown whether curcumin improves ER stress to prevent β cells from apoptosis. In this study, we aim to investigate the role and mechanism of curcumin in ameliorating H2O2-induced injury in MIN6 (a mouse insulinoma cell line) cells. Cell viability is examined by CCK8 assay. Hoechst 33258 staining, TUNEL and flow cytometric assay are performed to detect cell apoptosis. The relative amounts of reactive oxygen species (ROS) are measured by DCFH-DA. WST-8 is used to determine the total superoxide dismutase (SOD) activity. Protein expressions are determined by western blot analysis and immunofluorescence staining. Pretreatment with curcumin prevents MIN6 cells from H2O2-induced cell apoptosis. Curcumin decreases ROS generation and inhibits protein kinase like ER kinase (PERK)-C/EBP homologous protein (CHOP) signaling axis, one of the critical branches of ER stress pathway. Moreover, incubation with curcumin activates silent information regulator 1 (SIRT1) expression and subsequently decreases the expression of CHOP. Additionally, EX527, a specific inhibitor of SIRT1, blocks the protective effect of curcumin on MIN6 cells exposed to H2O2. In sum, curcumin inhibits the PERK-CHOP pathway of ER stress mediated by SIRT1 and thus ameliorates H2O2-induced MIN6 cell apoptosis, suggesting that curcumin and SIRT1 may provide a potential therapeutic approach for T1DM. © The Author(s) 2022.
语种：
英文
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Electrochemical regioselective synthesis of N-substituted/unsubstituted 4-selanylisoquinolin-1(2H)-ones
作者：
Wu, Zhi-Lin;Chen, Jin-Yang;Tian, Xian-Zhi;Ouyang, Wen-Tao;Zhang, Zhuo-Tao;...
期刊：
中国化学快报(英文) ,2022年33(3):1501-1504 ISSN：1001-8417
通讯作者：
He, WM
作者机构：
[Wu, Zhi-Lin; He, Wei-Min; Tian, Xian-Zhi; Chen, Jin-Yang; Ouyang, Wen-Tao; Zhang, Zhuo-Tao; He, WM] Univ South China, Sch Chem & Chem Engn, Hengyang 421001, Peoples R China.
通讯机构：
[He, WM ] U;Univ South China, Sch Chem & Chem Engn, Hengyang 421001, Peoples R China.
关键词：
Organodiselenide;Electrochemistry;Radical;Atom economy;Additives-free
摘要：
A novel and efficient electro-chemical initiated radical strategy was developed for the preparation of both N-substituted and N-unsubstituted 4-selanylisoquinolin-1(2H)-ones through selenylation of isoquinolin-1(2H)-ones with organodiselenides under chemical oxidant-, additive-free and ambient conditions.
语种：
英文
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锕系金属(铀和锔)内嵌硼球烯的理论研究
作者：
张乃心;王聪芝;赵玉宝;石伟群
期刊：
核化学与放射化学 ,2022年44(5):549-557 ISSN：0253-9950
作者机构：
[张乃心] 南华大学 化学化工学院,湖南 衡阳 421001;[张乃心] 中国科学院 高能物理研究所 核能放射化学实验室,北京 100049;[赵玉宝] 南华大学;[石伟群; 王聪芝] 中国科学院高能物理研究所
关键词：
硼团簇;锕系元素;硼球烯;密度泛函理论
摘要：
最近发现的全硼富勒烯(硼球烯,D_(2d) B_(40)~(-/0)),开启了硼球烯化学研究的新篇章。类似于富勒烯,金属掺杂也是硼球烯修饰和功能化重要途径。本工作采用密度泛函理论预测了一系列锕系金属掺杂硼球烯[An@B_(39)]~(n+)(An=U,n=3;An=Cm,n=2)。理论计算表明,这些硼球烯均为稳定的金属内嵌硼球烯,其中[U@B_(39)]~(3+)的能量最低,结构具有C_3对称性,而[Cm@B_(39)]~(2+)为C_1结构。成键性质分析表明,[U@B_(39)]~(3+)和[Cm@B_(39)]~(2+)均存在σ和π离域键。另外[An@B_(39)]~(n+)中U-B键的共价相互作用强于Cm-B键,且[U@B_(39)]~(3+)较[Cm@B_(39)]~(2+)更稳定。因此,An-B键的共价特征对于这些锕系金属内嵌硼球烯的形成是必不可少的。本工作扩展了硼球烯体系,并为新型稳定金属内嵌硼球烯的设计提供了理论线索。
语种：
中文
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QuEChERS法检测植物提取类化妆品中有机氯农药残留
作者：
宋严豪;肖新荣;周牧艳;罗芝伊;李思进;...
期刊：
应用化工 ,2022年51(10):3094-3097 ISSN：1671-3206
作者机构：
[宋严豪; 李思进; 肖新荣; 罗芝伊; 丁瑶] 南华大学化学化工学院;[周牧艳] 浙江华才检测技术有限公司
关键词：
QuEChERS法;有机氯农药;植物提取类化妆品
摘要：
建立检测植物提取类化妆品中有机氯农药残留的方法。采用QuEChERS法优化前处理，经气相色谱质谱联用仪检测分析结果。优化后采用乙腈溶剂，加入2g氯化钠、3g无水硫酸镁、1g柠檬酸钠、0.5g柠檬酸氢二钠进行提取，净化剂：150mgMgSO4、50mgPSA、80mgC18。结果18种有机氯农药的线性范围为0.05mg/kg～0.5mg/kg，线性相关系数均≥0.995，检出限为0.006mg/kg～0.059mg/kg，定量限为0.018mg/kg～0.190mg/kg。在0.1，0.2，0.5mg/L三个浓度下加标回收率在75.23%～107.49%之间，相对标准偏差RSD在2.37%～6.31%之间。该方法操作简单、快速、稳定，适用于高通量农药残留检测。
语种：
中文
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沉淀法制备草酸镍及其电化学储能性能
作者：
杨惠媛;张也;陈小洁;王伟科;金灵华;...
期刊：
硅酸盐学报 ,2022年50(11):2917-2923 ISSN：0454-5648
作者机构：
[金灵华; 杨惠媛; 陈小洁; 李健; 张也] School of Chemistry and Chemical Engineering, University of South China, Hengyang;421001, China;[王伟科] Nanchang Institute of Technology, Nanchang;330044, China;School of Physics and Electronics, Hunan Normal University, Changsha
关键词：
草酸镍;沉淀法;电极材料;混合超级电容器
摘要：
开发具有优异电化学性能的阴极材料对混合超级电容器的应用至关重要。通过沉淀法成功合成了NiC2O4?2H2O 阴极材料，并对其微观结构、形貌及其电化学性能进行研究。结果表明：NiC2O4?2H2O 呈现出尺寸约0.5~2.0 μm 独特多面体颗粒结构，且每个颗粒由多晶所组成的，在1 A/g 的电流密度下可实现1 096.2 F/g 的高比容量。组装后的草酸镍//活性炭混合超级电容器在3.7 kW/kg 的高功率密度下，仍保持10.2 Wh/kg 的能量密度。将两个混合器件串联可以点亮绿色和黄色发光二极管。NiC2O4?2H2O 作为一种新型、成本低廉、环境友好型阴极材料在电化学储能中具有潜在的应用前景。 The development of cathode materials with excellent electrochemical properties is crucial for the application of hybrid supercapacitors. NiC2O4?2H2O cathode material was synthesized by a precipitation method, and its microstructure, morphology and electrochemical performance were investigated. The results show that NiC2O4?2H2O exhibits a unique polyhedral particle structure, the particle sizes are 0.5?2.0 μm, and each particle is composed of polycrystals, thus achieving a high specific capacity of 1 096.2 F/g at a current density of 1 A/g. The assembled nickel oxalate//activated carbon hybrid supercapacitor still maintains an energy density of 10.2 Wh/kg at a high power density of 3.7 kW/kg. Connecting two hybrid devices in series can light up green and yellow LEDs. This demonstrates that NiC2O4?2H2O has potential application prospects in electrochemical energy storage as a novel, low-cost and environmentally friendly cathode material.
语种：
中文
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新型功能材料MIL-125-NH-PO的制备及其对铀酰离子的吸附性能
作者：
任政;张思秦;舒炀臻;付锡彪;彭国文
期刊：
中国有色金属学报 ,2022年32(11):3406-3418 ISSN：1004-0609
作者机构：
[张思秦; 舒炀臻; 任政] 南华大学资源环境与安全工程学院;[付锡彪] 南华大学化学化工学院;南华大学湖南省铀尾矿库退役治理工程技术研究中心;[彭国文] 南华大学资源环境与安全工程学院<&wdkj&>南华大学湖南省铀尾矿库退役治理工程技术研究中心
关键词：
铀酰离子;功能化;吸附
摘要：
采用溶剂热法以二苯基次膦酰氯作为取代基合成了一种新型功能金属有机骨架材料MIL-125-NH-PO，并通过扫描电镜（SEM）、傅里叶变换红外光谱（FT-IR）、X-射线衍射（XRD）、热重分析（TGA）和X射线能谱分析（EDS）对材料进行表征，探究不同的初始条件下MIL-125-NH-PO对铀酰离子吸附性能的影响。结果表明，在pH=5、t=300 min、T=298 K、Ce=40mg·L-1的条件下吸附量最高可达到415.05 mg·g-1，吸附过程自发放热熵减，符合Langmuir等温吸附模型和准二级动力学模型，吸附性能较好。且在有多种共存离子的情况下，MIL-125-NH-PO对铀酰离子依旧有良好的选择吸附性，表明MIL-125-NH-PO是一种潜在的铀吸附剂。
语种：
中文
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Carbon-sulfur bond formation via photochemical strategies: An efficient method for the synthesis of sulfur-containing compounds
作者：
Yang, Daoshan;Yan, Qiuli;Zhu, Enjie;Lv, Jian;He, Wei-Min
期刊：
中国化学快报(英文) ,2022年33(4):1798-1816 ISSN：1001-8417
通讯作者：
Yang, DS;He, WM
作者机构：
[Yang, DS; Zhu, Enjie; Yang, Daoshan; Yan, Qiuli; Lv, Jian] Qingdao Univ Sci & Technol, Coll Chem & Mol Engn, Key Lab Opt Elect Sensing & Analyt Chem Life Sci, State Key Lab Base Ecochem Engn,MOE, Qingdao 266042, Peoples R China.;[He, Wei-Min; He, WM] Univ South China, Sch Chem & Chem Engn, Hengyang 421001, Peoples R China.
通讯机构：
[Yang, DS ] Q;[He, WM ] U;Qingdao Univ Sci & Technol, Coll Chem & Mol Engn, Key Lab Opt Elect Sensing & Analyt Chem Life Sci, State Key Lab Base Ecochem Engn,MOE, Qingdao 266042, Peoples R China.;Univ South China, Sch Chem & Chem Engn, Hengyang 421001, Peoples R China.
关键词：
Visible light;C-S bond formation;Radical;Cyclization;Sulfur-containing compouds
摘要：
The development of green and convenient methods for C–S bond formation has received significant attention because C–S bond widely occurs in many important pharmaceutical and biological compounds. Recently, visible-light photoredox catalysis has been established as an efficient and general tool for the construction of C–C and C-heteroatom bonds. In this review, we have focused on the research on recent advances in C–S bond formation via visible-light photoredox catalysis, and the growing opportunities they present to the construction of complex chemical scaffolds for applications encompassing bioactive molecules synthesis, synthetic methodology development, and sulfur-containing drugs. We hope that this review will provide chemists with a synthetic tool that will open the door to further development of organsulfur chemistry © 2021
语种：
英文
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Direct Synthesis of 3-Sulfonylquinolines from N-Propargylanilines with Sulfonyl Chlorides
作者：
Wang Keli;Huang Jing;Liu Wei;Wu Zhilin;Yu Xianyong;...
期刊：
有机化学 ,2022年42(8):2527-2534 ISSN：0253-2786
通讯作者：
Jiang Jun;He, WM
作者机构：
[Wu Zhilin; He Weimin; Huang Jing; Wang Keli; Jiang Jun] Univ South China, Sch Chem & Chem Engn, Hengyang 421001, Hunan, Peoples R China.;[Yu Xianyong; Liu Wei] Hunan Univ Sci & Technol, Minist Educ, Key Lab Theoret Organ Chem & Funct Mol, Xiangtan 411201, Hunan, Peoples R China.
通讯机构：
[Jiang, J; He, WM ] U;Univ South China, Sch Chem & Chem Engn, Hengyang 421001, Hunan, Peoples R China.
关键词：
3-砜基喹啉;N-炔丙基苯胺;磺酰氯;一锅法;环化反应
摘要：
3-砜基喹啉广泛存在于多种生物活性分子和合成药物中.报道了一种温和条件下,以N-炔丙基苯胺和磺酰氯为原料,通过一锅法连续肼化/砜化/环化反应高效构建3-砜基喹啉类化合物的方法.该方法不仅可以进行克级合成,还可用于药物分子砜基衍生物的合成.
语种：
中文
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环氧大豆油化学接枝聚乳酸的制备及其性能
作者：
蔡垚;吴红枚;刘武;李端;范诗易;...
期刊：
材料研究学报 ,2022年36(1):73-80 ISSN：1005-3093
通讯作者：
Wu, Hongmei(wuhongmei2016@163.com)
作者机构：
[蔡垚; 吴红枚; 李端; 范诗易; 王洋洋] College of Chemistry and Chemical Engineering, University of South China, Hengyang;421000, China;[刘武] Dongguan Huilin New Material Technology Co. Ltd., Dongguan;523000, China;[蔡垚; 吴红枚; 李端; 范诗易; 王洋洋] 421000, China
通讯机构：
[Wu, H.] C;College of Chemistry and Chemical Engineering, China
关键词：
复合材料;化学接枝;改性;环氧大豆油
摘要：
用化学改性方式将环氧大豆油(ESO)与用马来酸酐(MAH)改性过的PLA接枝(MPLA),制备了反应性增容剂ECP并提出其可能的接枝机理.用FT-IR、DSC、SEM等手段表征ECP,研究了制备ECP时4种加料方式和ESO与MAH基团的摩尔比对其接枝率和酸值的影响.结果 表明:在MPLA阶段先加入1/3配方比的ESO,在化学接枝阶段加入剩余的ESO和全部的三乙胺,制备出的ECP接枝率最高达4.1514％;ESO与MAH基团的摩尔比为1时产物的接枝效果最好.ECP改性的PLA材料其综合性能优于ESO改性的PLA材料,ECP的加入使PLA的疏水性能提高.
语种：
中文
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Enhanced low-humidity performance of proton-exchange membrane fuel cell by introducing hydrophilic CNTs in membrane electrode assembly
作者：
Hou, Sanying;Wang, Hongqing;Ren, Jianwei;Yao, Chen;Shi, Lang;...
期刊：
自然科学进展·国际材料(英文) ,2022年32(2):150-156 ISSN：1002-0071
通讯作者：
Liao, SJ
作者机构：
[Wang, Hongqing; Yao, Chen; Shi, Lang; Hou, Sanying] Univ South China, Sch Chem & Chem Engn, Hengyang, Hunan, Peoples R China.;[Liao, Shijun] South China Univ Technol, Sch Chem & Chem Engn, Guangzhou 510641, Guangdong, Peoples R China.;[Ren, Jianwei] Council Sci & Ind Res CSIR, Energy Ctr, Meiring Naude Rd, ZA-0001 Pretoria, South Africa.
通讯机构：
[Liao, SJ ] S;South China Univ Technol, Sch Chem & Chem Engn, Guangzhou 510641, Guangdong, Peoples R China.
关键词：
Membrane electrode assembly;Low humidity;Carbon nanotubes;Power density;Stability
摘要：
Hydrophilic carbon nanotubes (HCNTs) were introduced into the membrane electrode assembly (MEA) to improve its low-humidity performance. The effects of types, placement, loading, and relative humidity on the MEA performance were investigated. It has been found that the MEA with 20 wt% HCNTs loading both in anode and cathode achieved the best self-humidifying performance. Its current density reached 1550 mA cm−2 at 0.6 V, with a maximum power density of 953 mW/cm2 at 70 °C, 30 psi and 30% relative humidity conditions. Besides, the stability test shows that its current density at 0.6 V only decreased by 6.4% after 44 h performance test, while the performance of blank MEA without HCNTs decreased by 45% within 6 h testing period. This extraordinary performance under low humidity condition is ascribed to that the HCNTs contained in the MEA improve the water management and mass transportation by functioning as a dispersant and hydrophilic agent. © 2022 Chinese Materials Research Society
语种：
英文
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A ternary mechanism for the facilitated transfer of metal ions onto metal-organic frameworks: implications for the ''versatility'' of these materials as solid sorbents
作者：
Bu, Xiyuan;Tian, Ming;Wang, Hongqing;Wang, Lin;Yuan, Liyong;...
期刊：
化学科学与工程前沿：英文版 ,2022年16(11):1632-1642 ISSN：2095-0179
通讯作者：
Liyong Yuan
作者机构：
[Yuan, Liyong; Shi, Weiqun; Bu, Xiyuan; Wang, Lin; Tian, Ming] Chinese Acad Sci, Inst High Energy Phys, Lab Nucl Energy Chem, Beijing 100049, Peoples R China.;[Wang, Hongqing; Tian, Ming] Univ South China, Sch Chem & Chem Engn, Hengyang 421001, Peoples R China.
通讯机构：
[Liyong Yuan] L;Laboratory of Nuclear Energy Chemistry, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, China
关键词：
U(VI);metal–organic frameworks;adsorption mechanism;metal node
摘要：
Although metal—organic frameworks offer a new platform for developing versatile sorption materials, yet coordinating the functionality, structure and component of these materials remains a great challenge. It depends on a comprehensive knowledge of a “real sorption mechanism”. Herein, a ternary mechanism for U(VI) uptake in metal—organic frameworks was reported. Analogous MIL-100s (Al, Fe, Cr) were prepared and studied for their ability to sequestrate U(VI) from aqueous solutions. As a result, MIL-100(Al) performed the best among the tested materials, and MIL-100(Cr) performed the worst. The nuclear magnetic resonance technique combined with energy-dispersive X-ray spectroscopy and zeta potential measurement reveal that U(VI) uptake in the three metal—organic frameworks involves different mechanisms. Specifically, hydrated uranyl ions form outer-sphere complexes in the surface of MIL-100s (Al, Fe) by exchanging with hydrogen ions of terminal hydroxyl groups (Al-OH2, Fe-OH2), and/or, hydrated uranyl ions are bound directly to Al(III) center in MIL-100(Al) through a strong inner-sphere coordination. For MIL-100(Cr), however, the U(VI) uptake is attributed to electrostatic attraction. Besides, the sorption mechanism is also pH and ionic strength dependent. The present study suggests that changing metal center of metal—organic frameworks and sorption conditions alters sorption mechanism, which helps to construct effective metal—organic frameworks-based sorbents for water purification. [Figure not available: see fulltext.]. © 2022, Higher Education Press.
语种：
英文
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High-performance proton-conducting solid oxide fuel cells using the first-generation Sr-doped LaMnO_3 cathode tailored with Zn ions
作者：
Wu, Shuai;Xu, Xi;Li, Xiaomei;Bi, Lei*
期刊：
中国科学：材料科学(英文刊) ,2022年65(3):675-682 ISSN：2095-8226
通讯作者：
Bi, Lei
作者机构：
[Bi, Lei; Li, Xiaomei; Wu, Shuai] Univ South China, Sch Resource Environm & Safety Engn, Hengyang 421001, Peoples R China.;[Xu, Xi] Imperial Coll London, Dept Mat, Prince Consort Rd, London SW7 2BP, England.;[Li, Xiaomei; Wu, Shuai] Qingdao Univ, Coll Mat Sci & Engn, Inst Mat Energy & Environm, Qingdao 266071, Peoples R China.
通讯机构：
[Bi, Lei] U;Univ South China, Sch Resource Environm & Safety Engn, Hengyang 421001, Peoples R China.
关键词：
LaMnO3;proton-conducting oxides;solid oxide fuel cell
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.
语种：
英文
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MBR一体化工艺处理水源地农村生活污水应用实例
作者：
何晓芳;李向阳;王小峰;李顺奇
期刊：
水处理技术 ,2022年48(10):149-152,156 ISSN：1000-3770
作者机构：
南华大学资源环境与工程学院,,南华大学长三角研究院,,浙江东大环境工程有限公司;[李向阳] 南华大学资源环境与工程学院;[王小峰] 南华大学化学化工学院;[李顺奇] 浙江东大环境工程有限公司;[何晓芳] 南华大学资源环境与工程学院<&wdkj&>南华大学长三角研究院<&wdkj&>浙江东大环境工程有限公司
关键词：
MBR一体化工艺;农村生活污水;工程实例
摘要：
采用 PTFE平板膜组件 MBR与 A~2O相结合的一体化设备，将之应用于浙江省水源保护地农村生活污水的终端处理工艺：叙述了该工艺的流程，分析了其在污染物去除、运行维护等各个方面的特点。运行结果显示该工艺出水水质能够稳定符合GB 18918—2002的一级 A标准，部分指标能够达到 GB 3838—2002的Ⅳ类水标准；实际出水中的 COD、NH3-N 和 TP 均值分别为 21.6、1.12、0.35 mg/L，粪大肠菌群数平均为 103 个/L。表明该工艺用于处理水源保护地的农村生活污水效果能满足水源地水源保护的高要求。且该工艺运行维护简单，能实现远程操控、自动运行，其推广应用可望为水源地之农村生活污水处理做出积极贡献。
语种：
中文
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