Efficient activation of peroxymonosulfate-based Fenton-like system using CuCo2O4/g-C3N4 prepared by Cu+-Co2+ self-doped: g-C3N4 driven reduction-oxidation cycling mechanism of Cu and Co metals

被引:14
作者
Zhao, Yubo [1 ]
Deng, Xianhe [1 ]
Yang, Ying [1 ]
Zhang, Yanqiu [1 ]
Wang, Hong [1 ]
Xin, Baifu [1 ]
机构
[1] Heilongjiang Univ, Sch Chem & Mat Sci, Key Lab Funct Inorgan Mat Chem, Minist Educ, Harbin 150000, Peoples R China
来源
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING | 2023年 / 11卷 / 04期
关键词
Fenton -like reaction; Permonosulfate; Bimetallic catalyst; Antibiotic degradation; CATALYTIC DEGRADATION; CARBON NITRIDE; AQUEOUS-SOLUTION; BISPHENOL-A; DECOMPOSITION; PERFORMANCE; NANOSHEET; NITROGEN; KINETICS; COFE2O4;
D O I
10.1016/j.jece.2023.110220
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
A large specific surface area Cu+-Co2+ self-doped CuCo2O4/g-C3N4 composite was synthesized in situ by a simple hydrothermal combined calcination method. This material is a kind of highly active catalyst suitable for per-oxymonosulfate (PMS)-based Fenton-like system, with strong resistance to impurity ions interference, univer-sality to pollutants, and good recyclability. Through XRD (X-ray diffraction), FTIR (Fourier transform infrared spectrometer), XPS (X-ray photoelectron spectrum), TEM (transmission electron microscopy) and catalytic ex-periments, it can be seen that CuCo2O4 nanoparticles with diameter of 6-9 nm are uniformly distributed on the surface of g-C3N4 to form CuCo2O4/g-C3N4. At room temperature, PMS-based Fenton-like system catalyzed by CuCo2O4/g-C3N4 could degraded tetracycline (TC) to 85.8% in 8 min. The mechanism of CuCo2O4/g-C3N4 activating PMS was discussed in detail. The results show that the surface electron transfer ability of C in g-C3N4 can promote the efficient reduction-oxidation (REDOX) cycle of Cu+/Cu2+ and Co2+/Co3+ on the catalyst sur -face, thus provide a continuous impetus for the activation of PMS.
引用
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页数:13
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