文献类型：期刊文献

英文题名：Revealing the active species of Cu-based catalysts for heterogeneous Fenton reaction

作者：Sun, Yang[1];Tian, Pengfei[1];Ding, Doudou[1];Yang, Zixu[1];Wang, Weizhi[1];Xin, Hui[1];Xu, Jing[1];Han, Yi-Fan[1,2]

机构：[1]East China Univ Sci & Technol, State Key Lab Chem Engn, Shanghai 200237, Peoples R China;[2]Zhengzhou Univ, Sch Chem Engn & Energy, Res Ctr Heterogeneous Catalysis & Engn Sci, Zhengzhou 450001, Henan, Peoples R China

年份：2019

卷号：258

外文期刊名：APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY

收录：;EI(收录号：20193007235200);WOS:【SCI-EXPANDED(收录号:WOS:000487570000035)】；

基金：The authors are grateful to the support from the National Science Foundation (21808057), Fundamental Research Funds for the Central Universities (222201718002), China Postdoctoral Science Foundation (2018M641941 and 2019T120313) and Innovation Scientists and Technicians Troop Construction Projects of Henan Province. The authors thank Research Center of Analysis and Test of East China University of Science and Technology for the help on TEM analysis. The authors thank beamline BL14W1 (Shanghai Synchrotron Radiation Facility) for providing the beam time.

语种：英文

外文关键词：Active species; Cu-based catalysts; Heterogeneous fenton; Structure-performance relationship

摘要：Cu-based heterogeneous Fenton catalysts are promising for industrial wastewater treatment, nevertheless it remains a great challenge to understand the catalytic mechanism due to the difficulty in identifying the critical roles of coexisting Cu-0, Cu+ and Cu2+ species in the technical catalysts. In order to identify the catalytic roles of various copper species, core-shell Cu@SiO2 catalysts reduced at different reduction temperatures were studied for rhodamine B degradation. The Cu+ dominating catalyst, Cu@SiO2-R200, exhibited the highest degradation rate with more than 95% RhB (10 ppm) removal within 10 min. Combined with multiple techniques, including in situ spectroscopy, and density functional theory calculations, it can be concluded that Cu+ acts as the primary active species with the highest efficiency in activating the H2O2 to produce center dot OH and subsequently degrading the contaminants. In this work, the structure-performance relationship of Cu-based heterogeneous Fenton reaction was elucidated to inspire the rational design of high-performance heterogeneous catalysts.