文献类型：期刊文献

英文题名：Defects on CoS2-x: Tuning Redox Reactions for Sustainable Degradation of Organic Pollutants

作者：Ji, Jiahui[1,2];Yan, Qingyun[1,2];Yin, Pengcheng[3];Mine, Shinya[4,5];Matsuoka, Masaya[4];Xing, Mingyang[1,2]

机构：[1]East China Univ Sci & Technol, Sch Chem & Mol Engn, Key Lab Adv Mat, 130 Meilong Rd, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Sch Chem & Mol Engn, Joint Int Res Lab Precis Chem & Mol Engn, Feringa Nobel Prize Scientist Joint Res Ctr, 130 Meilong Rd, Shanghai 200237, Peoples R China;[3]BCEG Environm Remediat Co LTD, 6 Jingshun East St, Beijing, Peoples R China;[4]Osaka Prefecture Univ, Dept Appl Chem, Gakuen Cho 1-1, Sakai, Osaka 5998531, Japan;[5]Hokkaido Univ, Inst Catalysis, N-21,W-10, Sapporo, Hokkaido 0010021, Japan

年份：2021

卷号：60

期号：6

起止页码：2903

外文期刊名：ANGEWANDTE CHEMIE-INTERNATIONAL EDITION

收录：;EI(收录号：20205009600544);WOS:【SCI-EXPANDED(收录号:WOS:000596466800001)】；

基金：This work was supported by the State Key Research Development Program of China (No. 2016YFA0204200). The project was supported by the Shanghai Municipal Science and Technology Major Project (Grant No.2018SHZDZX03), the Program of Introducing Talents of Discipline to Universities (B16017), the National Natural Science Foundation of China (Nos. 21822603, 21773062, 21577036), and the Fundamental Research Funds for the Central Universities (Nos. 22A201514021). The X-ray absorption experiments were performed under the approval of the JASRI (Proposal No. 2019B1686) and in cooperation with Prof. Takashi Toyao (Institute for Catalysis, Hokkaido University). The authors thank Research Center of Analysis and Test of East China University of Science and Technology for the help on the characterization.

语种：英文

外文关键词：cobalt; heterogeneous catalysis; iron; oxygen; reduction

摘要：It is important to develop self-producing reactive oxygen species (ROSs) systems and maintain the continuous and effective degradation of organic pollutants. Herein, for the first time, a system of ultrasound-treated CoS2-x mixed with Fe2+ is constructed to sustainably release singlet oxygen (O-1(2)) for the effective degradation of various organic pollutants, including dyes, phenols, and antibiotics. Ultrasonic treatment produces defects on the surface of CoS2 which promote the production of ROSs and the circulation of Fe3+/Fe2+. With the help of Co4+/Co3+ exposed on the surface of CoS2-x, the directional conversion of superoxide radical (O-.(2)-) to O-1(2) is realized. The CoS2-x/Fe2+ system can degrade organic pollutants efficiently for up to 30 days, which is significantly better than the currently recognized CuPx system (<3 days). Therefore, CoS2-x provides a new choice for the long-term remediation of organic pollutants in controlling large area river pollution.