Low H_(2)O_(2)consumption Fenton-like catalysts for pollutant cleavage based on the construction of a dual reaction center  

作　　者：Weixiang Liao Ziwen Zhao Lai Lyu Chun Hu Fan Li 

机构地区：[1]Key Laboratory for Water Quality and Conservation of the Pearl River Delta,Ministry of Education,Institute of Environmental Research at Greater Bay,Guangzhou University,Guangzhou 510006,China [2]Key Laboratory of Drinking Water Science and Technology,Research Center for Eco-Environmental Sciences,Chinese Academy of Sciences,Beijing 100085,China [3]South China Institute of Environmental Sciences,Ministry of Ecology and Environment,Guangzhou 510345,China

出　　处：《Journal of Environmental Sciences》2024年第11期107-116,共10页环境科学学报（英文版）

基　　金：supported by the National Natural Science Foundation of China(Nos.52150056,51838005,and 52100032);the Introduced Innovative R&D Team Project under the“Pearl River Talent Recruitment Program”of Guangdong Province(No.2019ZT08L387);the Special Basic Research Fund for Central Public Research Institutes of China(No.PMzx703-202204-152);the support from the BL14W1 beamline of Shanghai Synchrotron Radiation Facility(SSRF,China)。

摘　　要：High energy consumption has seriously hindered the development of Fenton-like reactions for the removal of refractory organic pollutants in water.To solve this problem,we designed a novel Fenton-like catalyst(Cu-PAN3)by coprecipitation and carbon thermal reduction.The catalyst exhibits excellent Fenton-like catalytic activity and stability for the degradation of various pollutants with low H_(2)O_(2)consumption.The experimental results indicate that the dual reaction centers(DRCs)are composed of Cu-N-C and Cu-O-C bridges between copper and graphene-like carbon,which form electron-poor/rich centers on the catalyst surface.H_(2)O_(2)is mainly reduced at electron-rich Cu centers to free radicals for pollutant degradation.Meanwhile,pollutants can be oxidized by donating electrons to the electron-poor C centers of the catalyst,which inhibits the ineffective decomposition of H_(2)O_(2)at the electron-poor centers.This therefore significantly reduces the consumption of H_(2)O_(2)and reduces energy consumption.

关 键 词：Water purification FENTON-LIKE Dual reaction centers Graphene-like carbon Low H_(2)O_(2)consumption 

分 类 号：X703[环境科学与工程—环境工程]