ZnS-embedded porous carbon for peroxydisulfate activation:Enhanced electron transfer for bisphenol A degradation  

作　　者：Ying Liu Ningjie Du Xinru Liu Ducheng Yao Deli Wu Zhuo Li Shun Mao 

机构地区：[1]College of Environmental Science and Engineering,Biomedical Multidisciplinary Innovation Research Institute,Shanghai East Hospital,State Key Laboratory of Pollution Control and Resource Reuse,Tongji University,1239 Siping Road,Shanghai,200092,China [2]Shanghai Institute of Pollution Control and Ecological Security,Shanghai,200092,China

出　　处：《Environmental Science and Ecotechnology》2024年第3期161-169,共9页环境科学与生态技术（英文）

基　　金：supported by the National Key R&D Program of China(2019YFC1905400);the Fundamental Research Funds for the Central Universities(2022-4-ZD-08).

摘　　要：Transition metal sulfides have garnered increasing attention for their role in persulfate activation,a crucial process in environmental remediation.However,the function of metal sulfides without reversible valence changes,such as ZnS,remains largely unexplored in this context.Here we report ZnS-embedded porous carbon(ZnS-C),synthesized through the pyrolysis of Zn-MOF-74 and dibenzyl disulfide.ZnS-C demonstrates remarkable activity in activating peroxydisulfate(PDS)across a wide pH range,enabling the efficient mineralization removal of bisphenol A(BPA).Through electrochemical investigation and theoretical simulations of charge density distributions,we unveil that the electron transfer from BPA to PDS mediated by the ZnS-C catalyst governs the reaction.This study,both in theory and experiment,demonstrates metal sulfide as electron pump that enhances electron transfer efficiency in PDS activation.These findings redefine the role of metal sulfide catalysts,shedding new light on their potential for regulating reaction pathways in PDS activation processes.

关 键 词：Peroxydisulfate activation Reaction pathway regulation Electron transfer ZNS Bisphenol A 

分 类 号：O64[理学—物理化学]