期刊
JOURNAL OF COLLOID AND INTERFACE SCIENCE
卷 619, 期 -, 页码 188-197出版社
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jcis.2022.03.126
关键词
Co3V2O8; Persulfate; Tetracycline; Radicals; Intermediate analysis; Degradation pathways
资金
- National Natural Science Foundation of China [22078118, 21972048]
- Key Realm Research and Development Program of Guangdong Province [2020B0202080001]
- Natural Science Foundation of Guangdong Province [2019A1515011138]
A bimetallic oxides heterogeneous material was prepared and used to activate persulfate for the purification of tetracycline wastewater. The material exhibited highly efficient catalytic activity and generated various radicals, resulting in a high removal rate.
The persistence and wide dispersion of antibiotics have a severe impact on the ecological environment. Developing an effective method with universal applicability to remove pollutants is pretty necessary. Herein, a bimetallic oxides (Co3V2O8) heterogeneous material was successfully prepared and used to activate the persulfate (PS) for purification of tetracycline (TC) wastewater. By exploring the reaction conditions and influencing factors, the removal rate of 50 mgL(-1) TC reached 87.1% by Co3V2O8/PS system, and the reaction rate constant was up to 0.0271 min(-1). As a highly efficient catalyst for the activation of PS, Co3V2O8/PS system produces radicals of SO4.-, .OH, .& nbsp;O-2(-) and O-1(2) in the reaction process due to the Co(II) and V(IV) exchange electrons with S2O82- and O-2. Simultaneously, the internal electron exchange occurs between Co(II)/Co(III) and V(IV)/V(V), which stabilizes the content of Co(II) and V(IV). This work provides a novel activator for PS activation to degrade contaminants and contributes to a better understanding of the PS activation mechanism by transition compound. (C)& nbsp;2022 Elsevier Inc. All rights reserved.
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