Activation mechanism of sodium percarbonate by FeOCl under visible-light-enhanced catalytic oxidation

被引：49
|
作者：
Chen, Mengdie [1 ]
Xu, Haiming [2 ]
Wang, Qi [1 ]
Li, Dongya [1 ,2 ]
Xia, Dongsheng [1 ]
机构：
[1] Wuhan Text Univ, Sch Environm Engn, Wuhan 430073, Hubei, Peoples R China
[2] Minist Educ, Engn Res Ctr Clean Prod Text Dyeing & Printing, Wuhan, Hubei, Peoples R China
来源：
CHEMICAL PHYSICS LETTERS | 2018年 / 706卷
关键词：
Iron oxychloride; Sodium percarbonate; Fe(III)/Fe(II) redox cycle; Photo-Fenton-like system; Heterogenous catalysis; FENTON CATALYST; DEGRADATION; PHOTOCATALYSIS; NANOPARTICLES; POLLUTANTS; EFFICIENCY; NANOSHEETS; RESONANCE; BENZENE; ORANGE;
D O I：
10.1016/j.cplett.2018.06.004
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The application of sodium percarbonate (SPC) catalyzed by FeOCl under visible light (FeOCl/SPC/Vis), is shown in this paper. The reaction kinetics, degradation mechanism, and catalyst stability were thoroughly investigated using Rhodamine B (RhB) as a simulated pollutant. Experimental results show that the degradation rate of RhB increases due to the participation of visible light. The valence change of iron species in the FeOCl catalyst, before and after the reaction, were characterized by XPS. It is found that the redox cycle of iron species can be accelerated under visible light. This activates SPC to generate radicals, effectively. (C) 2018 Elsevier B. V. All rights reserved.
引用
收藏
页码：415 / 420
页数：6
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