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LAPSE:2023.35951

Efficient Degradation of Chlortetracycline by Graphene Supported Cobalt Oxide Activated Peroxydisulfate: Performances and Mechanisms

Wei Li, Bin Yao, Yuguo Zheng, Guiqiang Zhang, Dan Zhi, Yaoyu Zhou

June 7, 2023

Abstract
Cobalt oxide has good catalytic activity for peroxydisulfate (PDS) activation but poor stability and is vulnerable to inactivation because of agglomeration. In this work, the chlortetracycline (CTC) degradation by peroxydisulfate (PDS) catalysis using the reduced graphene oxide support cobalt oxide (Co3O4/rGO) composite catalyst was investigated. It was found that 86.3% of CTC was degraded within 120 min in the Co3O4/rGO-800/PDS system. The influences of catalyst dosage, PDS concentration, solution pH, and reaction temperature were systematically explored. The excellent removal performance of CTC could be attributed to the synergistic effect between adsorption and catalytic degradation. ≡Co2+ and surface functional groups played as active sites to catalyze PDS, and the circulation of ≡Co2+/≡Co3+ was achieved. Moreover, Co3O4/rGO-800 showed satisfactory reusability after three cycles. This research can provide useful information for the development of efficient PDS catalysts and facilitate insights into CTC degradation mechanism.

Record ID

LAPSE:2023.35951

Keywords

advanced oxidation processes (AOPs), antibiotic, cobalt oxide, reduced graphene oxide, Wastewater

Subject

Environment

Suggested Citation

Li W, Yao B, Zheng Y, Zhang G, Zhi D, Zhou Y. Efficient Degradation of Chlortetracycline by Graphene Supported Cobalt Oxide Activated Peroxydisulfate: Performances and Mechanisms. (2023). LAPSE:2023.35951

Author Affiliations

Li W: Key Laboratory of Chemical Synthesis and Environmental Pollution Control-Remediation Technology of Guizhou Province, School of Biology and Chemistry, Minzu Normal University of Xingyi, Xingyi 562400, China
Yao B: College of the Environment and Ecology, Hunan Agricultural University, Changsha 410128, China
Zheng Y: Key Laboratory of Chemical Synthesis and Environmental Pollution Control-Remediation Technology of Guizhou Province, School of Biology and Chemistry, Minzu Normal University of Xingyi, Xingyi 562400, China
Zhang G: Key Laboratory of Chemical Synthesis and Environmental Pollution Control-Remediation Technology of Guizhou Province, School of Biology and Chemistry, Minzu Normal University of Xingyi, Xingyi 562400, China
Zhi D: College of the Environment and Ecology, Hunan Agricultural University, Changsha 410128, China
Zhou Y: Key Laboratory of Chemical Synthesis and Environmental Pollution Control-Remediation Technology of Guizhou Province, School of Biology and Chemistry, Minzu Normal University of Xingyi, Xingyi 562400, China; College of the Environment and Ecology, Hunan Ag

Journal Name

Processes

Volume

Issue

First Page

1381

Year

2023

Publication Date

2023-05-03

DOI:

https://doi.org/10.3390/pr11051381