1 School of Science, Lanzhou University of Technology, Lanzhou 730050, China; 2 State Key Laboratory of Advanced Processing and Recycling of Non-ferrous Metals, Lanzhou University of Technology, Lanzhou 730050, China
Abstract For the first time, two-dimensional FeOCl (Fe1-xCoxOCl) doped with Co was successfully applied to the photocatalytic and photo-Fenton degradation of Rhodamine B (RhB). The photocatalytic and photo-Fenton experiments showed that the degradation rates of RhB by Fe0.94Co0.06OCl are 82.6% and 98.2% within 50 min under neutral solution, room temperature and visible light. The inclusion of Co resulted in lattice imperfections on the surface of FeOCl, which was advantageous for the photogenerated electron-hole pair separation efficiency (consistent with the density functional theory calculation). Moreover, the RhB removal rate decreased from 98% to 82% during five successive cycles, showing good structural stability. Finally, based on the radical capture experiment, a potential mechanism for RhB degradation by Fe1-xCoxOCl catalyst was proposed. The idea of a synergistic mechanism for Fe1-xCoxOCl also offers a fresh concept for catalysts used in doping modification.
Fund: Project supported by the National Natural Science Foundation of China (Grant No. 52268042), the Natural Science Foundation of Gansu Province, China (Grant No. 22JR5RA253), and HongLiu First-Class Disciplines Development Program of Lanzhou University of Technology.
Corresponding Authors:
Zhi-Qiang We
E-mail: qianweizuo@163.com
Cite this article:
Jin-Huan Ma(马金环), Zhi-Qiang Wei(魏智强), Mei-Jie Ding(丁梅杰),Ji-Wei Zhao(赵继威), and Cheng-Gong Lu(路承功) Experimental and theoretical investigations of the photoelectrochemical and photo-Fenton properties of Co-doped FeOCl 2023 Chin. Phys. B 32 097202
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