In situ regeneration of catalyst for Fenton-like degradation by photogenerated electron transportation:Characterization,performance and mechanism comparison  

作　　者：Ming-Zhen Li Yang Zhang Kun Li Ya-Nan Shang Yi-Zhen Zhang Yu-Jiao Kan Zhi-Yang Jiao Yu-Yuan Han Xiao-Qiang Cao 

机构地区：[1]College of Safety and Environmental Engineering,Shandong University of Science and Technology,Qingdao 266590,China [2]Engineering Research Center of Groundwater Pollution Control and Remediation,Ministry of Education of China,Beijing Normal University,Beijing 100875,China [3]Environment Research Institute,Shandong University,Qingdao 266237,China [4]Institute of Yellow River Delta Earth Surface Processes and Ecological Integrity,Shandong University of Science and Technology,Qingdao 266590,China

出　　处：《Chinese Chemical Letters》2025年第1期529-533,共5页中国化学快报(英文版)

基　　金：the financial support from the National Natural Science Foundation of China(Nos.52074176,52300165,52300056,52300099);Natural Science Foundation of Shandong Province Youth Project(No.ZR2022QB155);Open Project Program of Engineering Research Center of Groundwater Pollution Control and Remediation,Ministry of Education of China(No.GW202203)。

摘　　要：Inactivation of carbon-based transition metal catalysts,which was caused by electron loss,limited their application in advanced oxidation processes.Therefore,Co and TiO_(2) double-loaded carbon nanofiber material(Co@CNFs-TiO_(2))was synthesized in this study.Photocatalytic and chemical catalytic systems were synergized efficiently.Tetracycline was eliminated within 15 min.The degradation rate remained above 90%after five cycles,and the 50%promotion proved the high stability of Co@CNFs-TiO_(2).The main reactive oxygen species in this system were sulfate radicals,whereas Co and TiO_(2) represented the active sites of the catalytic reaction.Electrons generated from TiO_(2) during the photocatalytic process were transferred to Co,which promoted the Co(Ⅲ)/Co(Ⅱ)cycle and maintained Co in a low-valence state,thereby stimulating the generation of sulfate radicals.In this study,the effective regulation of reactive oxygen species in the reaction system was realized.The results provided a guidance for in situ electron replenishment and regeneration of carbon-based transition metal catalysts,which will expand the practical application of advanced oxidation processes.

关 键 词：Electron transportation Catalyst regeneration PEROXYMONOSULFATE Co PHOTOCATALYTIC 

分 类 号：O64[理学—物理化学]