期刊
JOURNAL OF COLLOID AND INTERFACE SCIENCE
卷 588, 期 -, 页码 19-30出版社
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jcis.2020.12.043
关键词
Co3O4/Bi2WO6; Peroxymonosulfate; Photocatalyst; Organic pollutants
资金
- Natural Science Research of Jiangsu Higher Education Institutions of China [20KJB610018]
- Yancheng Teachers University [72061871011C]
- Jiangsu province Undergraduate Innovation and Entrepreneurship training program [202010324051Y]
- Jiangsu Science and Technology Association Young Talents Lifting Project
The study constructed a Co3O4/Bi2WO6 composite to activate PMS for the degradation of ciprofloxacin under visible light irradiation, showing excellent degradation performance. This work not only provides an approach to fabricate heterostructures but also indicates a potential environment remediation alternative for the efficient removal of recalcitrant organic compounds from wastewaters.
Photocatalytic technology assisted via peroxymonosulfate (PMS) has good potential in water treatment. In this study, the Co3O4/Bi2WO6 composite was constructed via an in-situ calcination process and used to activate PMS for the degradation of ciprofloxacin (CIP) under visible light irradiation. The obtained 5 wt% Co3O4/Bi2WO6(CBWO-2) can highly effectively remove 86.2% CIP within 5 min visible light irradiation in presence of PMS. The excellent degradation performance of Co3O4/Bi2WO6/PMS system can be attributed to the synergistic effect between p-n heterojunction and PMS activation. The conduction band and valence band deviation between Co3O4 and Bi2WO6 were calculated by XPS techniques. Besides, DFT calculations were performed to further confirm the internal structure between Co3O4 and Bi2WO6. This work not only provides an approach to fabricate heterostructures but also indicated that Co3O4/Bi2WO6/PMS/Vis system is a potential environment remediation alternative for the efficient removal of recalcitrant organic compounds from wastewaters. (C) 2020 Elsevier Inc. All rights reserved.
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