文献类型：期刊文献

英文题名：Catalytic degradation of anthraquinones-containing H2O2 production effluent over layered Co-Cu hydroxides: Defects facilitating hydroxyl radicals generation

作者：Guo, Xiao Xi[1,2];Hu, Ting Ting[1];Meng, Bo[1];Sun, Yang[3];Han, Yi-Fan[1,3]

机构：[1]Zhengzhou Univ, Sch Chem Engn & Energy, Res Ctr Heterogeneous Catalysis & Engn Sci, Zhengzhou 450001, Henan, Peoples R China;[2]Henan Univ Sci & Technol, Sch Chem Engn & Pharm, Luoyang 471000, Peoples R China;[3]East China Univ Sci & Technol, Lab Chem Engn, Shanghai 200237, Peoples R China

年份：2020

卷号：260

外文期刊名：APPLIED CATALYSIS B-ENVIRONMENTAL

收录：;EI(收录号：20194007492502);WOS:【SCI-EXPANDED(收录号:WOS:000496894300028)】；

基金：This work was supported by the National Key R&D Program of China (2018YFB0604501), National Natural Science Foundation of China (No. 21606209, U1463205), Fundamental Research Funds for the Central Universities (222201718002 and 222201814006) and Innovation Scientists and Technicians Troop Construction Projects of Henan Province are greatly acknowledged for funding this work.

语种：英文

外文关键词：Co-Cu LDH; Defects; Fenton-like reaction; AHE degradation; Hydroxyl radicals

摘要：Anthraquinones from H2O2 production effluent (AHE) was remediated over a Co-Cu Layered Double Hydroxide (LDH) through a Fenton-like reaction process. The variation of synthesis pH value has found to significantly influence the catalyst performances for hydroxyl radical generation. Defects (oxygen vacancies) in the catalyst surface which facilitates H2O2 decomposition was systematically studied with adjusting the synthesis pH value. The framework of catalyst with LDH feature was thoroughly characterized by several spectroscopy techniques. The formation of Co-O-Cu oxo-bridged bond is assumed to be responsible for the electron transfer and the generation of defects. However, the surface electronic structure was altered with the changes in Co and Cu contents. The defect-rich LDH framework with abundant defects (oxygen vacancies) promote electron transfer, and H(2)O(2)dissociation are primarily to account for the excellent catalytic performance. The application of this catalyst and its optimization of operational parameters in AHE removal were thoroughly performed as well.