文献类型：期刊文献

英文题名：Degradation of chloroxylenol by CoSx activated peroxomonosulfate: Role of cobalt-sulfur ratio

作者：Guo, Jiayi[1];Ling, Liangxiong[1];Lu, Qinwei[1];Zhou, Yi[1];Luo, Xubiao[2];Zhou, Yanbo[1,2,3]

机构：[1]East China Univ Sci & Technol, State Environm Protect Key Lab Environm Risk Asses, Shanghai 200237, Peoples R China;[2]Jinggangshan Univ, Sch Life Sci, Key Lab Jiangxi Prov Funct Biol & Pollut Control R, Jian 343009, Peoples R China;[3]State Key Lab Coal Liquificat Gasificat & Utilizat, Shanghai 200237, Peoples R China

年份：2025

卷号：36

期号：4

外文期刊名：CHINESE CHEMICAL LETTERS

收录：;WOS:【SCI-EXPANDED(收录号:WOS:001416804500001)】；

基金：This work was supported by the National Natural Science Foundation of China (No. 52370168) and the Program of Shanghai Outstanding Technology Leaders (No. 20XD1433900).

语种：英文

外文关键词：Peroxymonosulfate; Fenton-like reaction; Cobalt sulfides; Chloroxylenol degradation; Morphology control

摘要：Cobalt sulfide has received widespread attention in the advanced oxidation treatment of wastewater, and its catalytic activity is influenced by crystal structure and exposed active sites. This work successfully constructed three types of cobalt sulfides, namely Co9S8, Co3S4 and CoS2, by changing the molar ratio of cobalt to sulfur. The results showed that the degradation efficiency of Co9S8, Co3S4 and CoS2 on chloroxylenol by activated peroxomonosulfate (PMS) were 100 %, 88.70 % and 67.73 %, respectively. Combined with density functional theory (DFT), the structural properties and reaction energy barriers of different cobalt-sulfur ratios were calculated. As the ratio of cobalt to sulfur increases, the sulfur vacancies realized a fuller exposure of active sites (Co2 + surf. ) on the surface of the catalysts, with a highly linear relationship with the reaction rate constant ( R2 = 0.945). This work explores the structure-activity relationship between cobalt sulfur ratio and degradation efficiency, which can guide new catalyst synthesis. (c) 2025 Published by Elsevier B.V. on behalf of Chinese Chemical Society and Institute of Materia Medica, Chinese Academy of Medical Sciences.