期刊
JOURNAL OF ALLOYS AND COMPOUNDS
卷 843, 期 -, 页码 -出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2020.155598
关键词
Yttrium; Bismuth oxychloride; Photocatalysis; Tetracycline hydrochloride
资金
- Outstanding Young Talents Fund of Science and Technology Department of Jilin Province [20190103144JH]
- Fund of the Education Department of Jilin Province [JJKH20200290KJ]
- 2019-2020 Youth Talent Support Project of Jilin province
- Science and Technology Projects of the Ministry of Housing and Urban-Rural Development [2018-K6-003]
Novel, visible light-sensitive photocatalysts of yttrium-doped bismuth oxychloride (Y-BiOCl) were successfully fabricated through consecutive solvent-based and thermal processes. Several characterization strategies were employed to analyze the morphologies, chemical properties, and photocatalytic performances of the catalysts. Compared to pure BiOCl, Y-BiOCl catalysts displayed superior photocatalytic capability for visible light-induced tetracycline hydrochloride (TC) removal. Photocatalytic activity was maximized at 15-wt% Y-doping, with the resulting Y-BiOCl catalyst achieving 90.3% TC removal efficiency within only 60 min, as well as high stability and reusability. Y3+ was discovered to displace Bi3+ in the BiOCl lattices, inducing lattice distortion and thereby raising the concentration of oxygen holes and defects. Y3+-doping also narrowed the bandgap of BiOCl and significantly decreased the bandgap energy, thereby decreasing the photocarrier recombination rate and enhancing photocatalytic activity. The main accomplishment of this study was the development of a promising photocatalytic material for removing organic compounds from wastewater. (C) 2020 Elsevier B.V. All rights reserved.
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