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.
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)。
