文献类型：期刊文献

英文题名：Metal Sulfides as Excellent Co-catalysts for H2O2 Decomposition in Advanced Oxidation Processes

作者：Xing, Mingyang[1,2];Xu, Wenjing[2];Dong, Chencheng[1];Bai, Yaocai[2];Zeng, Jingbin[2];Zhou, Yi[1];Zhang, Jinlong[1];Yin, Yadong[2]

机构：[1]East China Univ Sci & Technol, Sch Chem & Mol Engn, Natl Engn Lab Ind Wastewater Treatment, 130 Meilong Rd, Shanghai 200237, Peoples R China;[2]Univ Calif Riverside, Dept Chem, Riverside, CA 92521 USA

年份：2018

卷号：4

期号：6

起止页码：1359

外文期刊名：CHEM

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000438546100015)】；

基金：This work was supported by the National Natural Science Foundation of China (21773062, 21577036, 21377038, and 5171101651), the State Key Research Development Program of China (2016YFA0204200), the Shanghai Education Development Foundation (14CG30) and Shanghai Municipal Education Commission (16JC1401400), the Shanghai Pujiang Program (17PJD011), and the Fundamental Research Funds for the Central Universities (22A201514021). Acknowledgment is also made to the donors to the American Chemical Society Petroleum Research Fund (55904-ND10) for partial support of this research.

语种：英文

摘要：Advanced oxidation processes (AOPs) are widely proposed for treating persistent pollutants by the, OH radicals generated from H2O2 decomposition. However, their broad applications in practical settings have been hampered by the low efficiency of H2O2 decomposition. Here, we report that metal sulfides (MoS2, WS2, Cr2S3, CoS2, PbS, or ZnS) can serve as excellent co-catalysts to greatly increase the efficiency of H2O2 decomposition and significantly decrease the required dosage of H2O2 and Fe2+ in AOPs. Unsaturated S atoms on the surface of metal sulfides can capture protons to form H2S and expose metallic active sites with reductive properties to accelerate the rate-limiting step of Fe3+/Fe2+ conversion. The efficiency of AOPs involving co-catalysts can be further enhanced by visible-light illumination thanks to the sensitization of organic pollutants. This discovery is expected to drive great advances in the use of AOPs for large-scale practical applications such as environmental remediation.