Peroxymonosulfate activation by octahedral Cu2O for Orange I degradation via radical and non-radical pathways

被引：18
|
作者：
Yang, Yusong [1 ]
Yu, Shuquan [1 ]
Zong, Yuan [1 ]
Wu, Ruiqi [1 ]
Feng, Jing [1 ]
Wei, Tong [1 ]
Ren, Yueming [1 ]
机构：
[1] Harbin Engn Univ, Coll Mat Sci & Chem Engn, Key Lab Superlight Mat & Surface Technol, Minist Educ, Harbin 150001, Peoples R China
来源：
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING | 2022年 / 10卷 / 04期
基金：
中国国家自然科学基金;
关键词：
Peroxymonosulfate; Cu2O; Radical; Non-radical; Orange I; NANOPARTICLES; CATALYST; PERFORMANCE; ADSORPTION; MECHANISM; SURFACE;
D O I：
10.1016/j.jece.2022.108113
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
In this study, cubic Cu2O (c-Cu2O) and octahedral Cu2O (o-Cu2O) were prepared through a simple method and applied to activate peroxymonosulfate (PMS) for the degradation of Orange ? (O?). o-Cu2O exhibited excellent activity for PMS activation with 85.68 % of O? being removed within 30 min, and its catalytic activity remained high even if it was used repeated six times. The effects of PMS concentration, initial pH, anions (Cl-, HCO3- and NO3-) and natural organic matter (NOM) on O? degradation in the o-Cu2O/PMS system were investigated. The mechanism study implied that O? was oxidized via radical (SO4 center dot-, center dot OH and O-2(center dot-)) and non-radical (O-1(2) and electron transfer) pathways in the o-Cu2O/PMS system. This work provides an interesting insight into PMS activation by Cu-based catalysts for wastewater treatment.
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页数：10
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