期刊
JOURNAL OF COLLOID AND INTERFACE SCIENCE
卷 553, 期 -, 页码 186-196出版社
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jcis.2019.06.007
关键词
Z-scheme; I-BiOBr/Bi12GeO20 heterostructure; Photocatalytic degradation and reduction; Doping I- ions; Degradation pathways
资金
- National Natural Science Foundation of China [21576112, 21805115, 21606114]
- NSFC-Shanxi Coal Based Low Carbon Joint Fund [U1810117]
- Postdoctoral Science Foundation of China [2017M611712, 2017M611717]
- Jiangsu Planned Projects for postdoctoral Research Funds [1701025A]
A series of Z-schemel-BiOBr/Bi12GeO20 heterostructures were successfully obtained by a simple method. The Z-scheme I-BiOBr/Bi12GeO20 heterostructures show outstanding photocatalytic performance for degrading the various organic pollutants of the waste water. For degradation of Tetracycline (TC), the Z-scheme 30I-BiOBr/Bi12GeO20 heterostructure exhibits the superior rate constant, which is about 7.73 times, 3.52 times and 1.66 times higher than that of the pure Bi12GeO20, BiOBr and I-BiOBr, respectively. Meanwhile, as we expected, the Z-scheme 30I-BiOBr/Bi12GeO20 heterostructure also displays the enhanced photocatalytic perfomance for degradation of Ciprofloxacin (CIP), 2-Mercaptobenzothiazole (MBT) and reduction of aqueous Cr(V1). The enhancement of photocatalytic performance is attributed to the high redox capacity and the strong interfacial interaction between I-BiOBr and Bi12GeO20, which can effectively improve the separation of photo-induced electron-hole pairs. Additionally, the photocatalytic mechanism over the Z-scheme I-BiOBr/Bi12GeO20 heterostructure is provided. The research work may provide a promising approach to fabricate other Z-scheme heterostructures with efficient photocatalytic performance. (C) 2019 Published by Elsevier Inc.
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