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Graphitized Cu-β-cyclodextrin polymer driving an efficient dual-reaction-center Fenton-like process by utilizing electrons of pollutants for water purification

引用

Journal of Environmental Sciences 2023年第4期126卷 565-574页

作者： Weixiang Liao Lai Lyu DiWang Chun Hu Tong Li Key Laboratory for Water Quality and Conservation of the Pearl River Delta Ministry of EducationInstitute of Environmental Research at Greater BayGuangzhou UniversityGuangzhou 510006China School of Energy and Environmental Engineering University of Science and Technology BeijingBeijing 100083China

Excessive consumption of energy and resources is a major challenge in wastewater ***,a novel heterogeneous Fenton-like catalyst consisting of Cu-doped graphenelike catalysts (Cu-GCD NSs) was first synthesized by an enhanced carbothermal reduction of β-cyclodextrin (β-CD).The catalyst exhibits excellent Fenton-like catalytic activity for the degradation of various pollutants under neutral conditions,accompanied by low H_(2)O_(2)*** results of structural characterization and theoretical calculations confirmed that the dual reaction centers (DRCs) were constructed on Cu-GCD NSs surface through C-O-Cu bonds supported on zero-valent copper species,which play a significant role in the high-performance Fenton-like *** pollutants that served as electron donors were decomposed in the electron-poor carbon centers,whereas H_(2)O_(2)and dissolved oxygen obtained these electrons in the electron-rich Cu centers through C-O-Cu bonds,thereby producing more active *** study demonstrates that the electrons of pollutants can be efficiently utilized in Fenton-like reactions by DRCs on the catalyst surface,which provides an effective strategy to improve Fenton-like reactivity and reduce H_(2)O_(2)consumption.

关键词： Fenton-like Dual reaction centers Graphene-like carbon nanoscale zero-valent copper Pollutants degradation

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