摘要：
It is an important challenge to develop a chemosensor for trace uranyl ion in an aqueousmediumfor sustainable development of nuclear energy and environmental conservation. A conjugated fluorescent polymer sensor P2 based on amidoxime groups and polyfluorene, which showed good hydrophilous resulting adequate contact with uranyl ions and selectivity and sensitivity even in the presence of other metal ions in DMA/H2O (v/v = 20:80, pH= 6.0) solution, for uranyl ion was designed and prepared in this work. And it possesses good thermal stability and a larger Stokes shift (108 nm). Importantly, the fluorescence quenching occurredwhen P2 combining uranium. It had a good linear relationship with UO22+ concentration in the range of 10 to 200 nM with a fairly low LOD 7.4 x 10(-9) M. Interaction properties between the sensor P2 and UO22+ and the fluorescent mechanism were investigated by density functional theory (DFT). More importantly, the sensor can be successfully used for the detection of uranyl ion in environmental solutions. This work suggests that conjugated fluorescent polymer with amidoxime groups will be a prospective sensor of uranyl ion in the environmental sample. (C) 2020 Elsevier B.V. All rights reserved.
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
作者机构：
[Lv, Qi-Yan; Sun, Kai; Yu, Bing] Zhengzhou Univ, Coll Chem, Green Catalysis Ctr, Zhengzhou 450001, Peoples R China.;[Lv, Qi-Yan; He, Wei-Min] Changsha Univ Sci & Technol, Hunan Prov Key Lab Mat Protect Elect Power & Tran, Changsha 410114, Peoples R China.;[Lin, Ying-Wu] Univ South China, Sch Chem & Chem Engn, Hengyang 421001, Peoples R China.;[He, Wei-Min] Hunan Univ Sci & Engn, Dept Chem, Yongzhou 425100, Peoples R China.
通讯机构：
[Yu, Bing] Z;[He, Wei-Min] C;[He, Wei-Min] H;Zhengzhou Univ, Coll Chem, Green Catalysis Ctr, Zhengzhou 450001, Peoples R China.;Changsha Univ Sci & Technol, Hunan Prov Key Lab Mat Protect Elect Power & Tran, Changsha 410114, Peoples R China.
摘要：
The cyano group is a valuable and readily available functional group for the preparation of various functional groups, such as amines, carboxylic acids, and ketones. In recent decades, the radical cascade reaction has emerged as a versatile tool to prepare a large variety of functional molecules. The application of the cyano group as a radical acceptor in cascade reactions provides diverse opportunities for the convenient construction of various important heterocycles and carbocycles. Such synthetic strategies will open new ways for the rapid buildup of molecular complexity. The focus of this review is the summary of the dynamic field of radical cascade processes using the cyano group as a radical acceptor, which has not been well documented so far.
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.
作者机构：
[He, Wei-Min; Jiang, Jun] Univ South China, Sch Chem & Chem Engn, Hengyang 421001, Peoples R China.;[Xiao, Fang] Cent South Univ, Xiangya Sch Publ Hlth, Changsha 410078, Peoples R China.;[Wang, Leyong] Nanjing Univ, Sch Chem & Chem Engn, Key Lab Mesoscop Chem MOE, Nanjing 210023, 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;Green solvent;Water;Solvent free;Purification
摘要：
Clean production, as an important part of green chemistry, has received great attention and considerable development in recent years. In this perspective article, we summarized some examples of (nearly) quantitative synthesis, clean separation and purification to emphasize clean production. These reactions were carried out by using eco-friendly solvents and the pure products could be easily obtained through clean procedures.
摘要：
With the development of nuclear power, the negative environmental impact such as radioactive pollution has become an urgent issue to impede the utilization of nuclear energy. The construction of promising organic-inorganic hybrid materials is considered as an effective strategy for environmental remediation of radioactive contamination. In this work, two-dimensional transition metal carbide (MXene), an emerging inorganic layered material, has been successfully modified by carboxyl terminated aryl diazonium salt to both enhance its chelating ability to radionuclides and improve its water stability. The carboxyl functionalized Ti3C2Tx MXene (TCCH) shows excellent removal ability for U(VI) and Eu(III), evidenced by ultrafast adsorption kinetics (3 min), high maximum adsorption capacities (344.8 mg/g for U and 97.1 mg/g for Eu) and high removal percentage of radionuclides from artificial groundwater (> 90%). The adsorption of U(VI) and Eu(III) on TCCH are in good accord with the Langmuir adsorption isotherm model and the pseudo-second-order kinetic model. Ionic strength experiments, X-ray photoelectron spectroscopy (XPS) and Extended X-ray absorption fine structure (EXAFS) analyses were conducted to assess the detailed adsorption mechanism. The results reveal that the adsorption of U(VI) on TCCH follows an inner-sphere configuration, whereas the adsorption of Eu(III) is determined by both inner-sphere complexation and electrostatic interaction.
作者机构：
[Duan, Chongxiong] Foshan Univ, Sch Mat Sci & Energy Engn, Foshan 528231, Peoples R China.;[Yu, Yi; Xi, Hongxia; Zhang, Xuelian; Li, Libo; Xiao, Jing] South China Univ Technol, Sch Chem & Chem Engn, Guangzhou 510640, Peoples R China.;[Wu, Junliang] South China Univ Technol, Sch Environm & Energy, Guangzhou 510006, Peoples R China.;[Yang, Pengfei] Univ South China, Sch Chem & Chem Engn, Hengyang 421001, Peoples R China.
通讯机构：
[Xi, Hongxia; Wu, Junliang] S;South China Univ Technol, Sch Chem & Chem Engn, Guangzhou 510640, Peoples R China.;South China Univ Technol, Sch Environm & Energy, Guangzhou 510006, Peoples R China.
关键词：
metal-organic frameworks;water-based routes;industrial Production
摘要：
Although metal-organic frameworks (MOFs) show numerous advantages over other crystalline materials, their industrial relevances have been impeded owing to their many drawbacks such as environmental impacts and economic costs of their synthesis. A green preparation pathway could greatly reduce the environmental costs, energy, and the need for toxic organic solvents, and consequently reduce the production cost. Thus, the most desirable synthesis route is the replacement of harsh organic solvents with aqueous solutions to abate environmental and economic impacts. This review summarizes recent research advancements of water-based routes for MOF synthesis and gives a brief outline of the most prominent examples. The challenges and prospects of the commercialization of promising MOFs in the future are also presented. This study aims to offer necessary information regarding the green, sustainable, and industrially acceptable fabrication of MOFs for their commercial applications in the future.
摘要：
By using ambient air as the oxidant and malic acid as the promoter, a practical method for the preparation of 2-aminobenzothiazoles through visible-light-initiated cascade reaction of aromatic amines and KSCN in eco-friendly bis(methoxypropy)ether under metal-, hazardous additive-, photocatalyst-free conditions was established.
作者机构：
[He, Wei-Min; Cao, Zhong; Zhu, Qin] Changsha Univ Sci & Technol, Hunan Prov Key Lab Mat Protect Elect Power & Tran, Changsha 410114, Peoples R China.;[Lin, Ying-Wu] Univ South China, Sch Chem & Chem Engn, Hengyang 421001, Peoples R China.;[Zhu, Qin] Hunan Univ Sci & Technol, Dept Chem, Xiangtan 411201, Peoples R China.
通讯机构：
[He, Wei-Min] C;Changsha Univ Sci & Technol, Hunan Prov Key Lab Mat Protect Elect Power & Tran, Changsha 410114, Peoples R China.
关键词：
Green chemistry;Dual role;Quinoline N-oxides;Alkynes;Water
摘要：
Herein we summarized some clean preparation examples to emphasize the concept of dual roles design (or named as "two birds one stone strategy") in green and sustainable chemistry. In those examples, the reactants and/or solvent play dual roles rendering a cleaner organic preparation process. Consequently, both the chemical waste and manufacturing cost could be reduced. (C) 2019 Chinese Chemical Society and Institute of Materia Medica, Chinese Academy of Medical Sciences. Published by Elsevier B.V. All rights reserved.
期刊：
Chemical Communications,2018年54(4):370-373 ISSN：1359-7345
通讯作者：
Shi, Weiqun
作者机构：
[Lan, Jianhui; Cao, Xingzhong; Yuan, Liyong; Chai, Zhifang; Shi, Weiqun; Tian, Ming] Chinese Acad Sci, Inst High Energy Phys, Lab Nucl Energy Chem, Beijing 100049, Peoples R China.;[Tian, Ming] Univ South China, Sch Chem & Chem Engn, Hengyang 421001, Hunan, Peoples R China.;[Wang, Xiaolin] China Acad Engn Phys, Inst Nucl Phys & Chem, Mianyang 621900, Sichuan, Peoples R China.;[Chai, Zhifang] Soochow Univ, Sch Radiol & Interdisciplinary Sci, Suzhou 215123, Peoples R China.;[Gibson, John K.] Lawrence Berkeley Natl Lab, Chem Sci Div, Berkeley, CA 94720 USA.
通讯机构：
[Shi, Weiqun] C;Chinese Acad Sci, Inst High Energy Phys, Lab Nucl Energy Chem, Beijing 100049, Peoples R China.
摘要：
The preliminary results described here show that the adsorbability of uranyl ions by a highly stable MOF UiO-66 can be drastically enhanced by tailoring the missing-linker defects in this MOF. The combination of defect-induced functionality improvement with the acid-resistant nature of UiO-66 substantiates the applicability of this material for actinide capture from acidic media.
期刊：
CHEMICAL SOCIETY REVIEWS,2012年41(2):797-828 ISSN：0306-0012
通讯作者：
Wang, Guoping
作者机构：
[Wang, Guoping] Univ S China, Coll Chem Engn, Hengyang 421001, Peoples R China.;[Zhang, Jiujun; Zhang, Lei; Wang, Guoping] Natl Res Council Canada, Inst Fuel Cell Innovat, Vancouver, BC V6T 1W5, Canada.
通讯机构：
[Wang, Guoping] U;Univ S China, Coll Chem Engn, Hengyang 421001, Peoples R China.
摘要：
In this critical review, metal oxides-based materials for electrochemical supercapacitor (ES) electrodes are reviewed in detail together with a brief review of carbon materials and conducting polymers. Their advantages, disadvantages, and performance in ES electrodes are discussed through extensive analysis of the literature, and new trends in material development are also reviewed. Two important future research directions are indicated and summarized, based on results published in the literature: the development of composite and nanostructured ES materials to overcome the major challenge posed by the low energy density of ES (476 references).
