Enhanced photocatalytic activity, mechanism and potential application of I-doped-Bi4Ti3O12 photocatalysts

doi:10.1016/j.mtchem.2021.100750

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	Enhanced photocatalytic activity, mechanism and potential application of I-doped-Bi4Ti3O12 photocatalysts
	Cheng, T.5; Ma, Q.5; Gao, H.5; Meng, S.4; Lu, Z.4; Wang, S.3; Yi, Z.2; Wu, X.1; Liu, G.5; Wang, X.5
刊名	MATERIALS TODAY CHEMISTRY
	2022-03-01
卷号	23
关键词	I-doped-BTO photocatalytsts Enhanced photocatalytic performance Photocatalytic mechanism Photodegradation application
ISSN号	2468-5194
DOI	10.1016/j.mtchem.2021.100750
英文摘要	In this study, we have introduced iodine into Bi4Ti3O12 (BTO) crystals with the aim of improving their photocatalytic activities in decomposing organic pollutants. The as-prepared Id ope d-BTO photocatalysts were systematically analyzed by various techniques (e.g. X-ray powder diffraction, scanning electron microscopy, transmission electron microscopy, X-ray photoelectron spectroscopy, ultraviolet-visible diffuse reflectance spectroscopy and Fourier transform infrared spectroscopy), as well as density functional theory calculation. It is confirmed that I element is successfully doped, as an I - oxidation state, in the BTO crystals by substituting the O in the perovskite-like (Bi2Ti3O10)(2-) blocks. The photocatalytic activities between the I-x-BTO (x = 0, 0.2, 0.4, 0.6, and 0.8) samples were compared by the photo-degradation of methylene blue (MB) under simulated-sunlight irradiation, revealing that I-0.4-BTO is the optimal photocatalyst having a photocatalytic activity about 3.0 times higher than that of parent BTO. Based on the experimental data and density functional theory calculation, the enhanced photocatalytic mechanism for the I-doped-BTO photocatalysts was proposed and discussed. To promote the potential application of the optimal I-0.4-BTO photocatalyst, its photocatalytic performances were further investigated by the photodegradation of ciprofloxacin, tetrabromobisphenol A, tetracycline hydrochloride and methyl orange/rhodamine B (RhB)/MB mixture dyes; moreover, the effect of inorganic anions and pH values on the MB photodegradation was also investigated. (C) 2021 Elsevier Ltd. All rights reserved.
WOS研究方向	Chemistry ; Materials Science
语种	英语
出版者	ELSEVIER SCI LTD
WOS记录号	WOS:000752560200007
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/154779]
专题	理学院材料科学与工程学院设计艺术学院
作者单位	1.Jishou Univ, Sch Chem & Chem Engn, Jishou 416000, Peoples R China 2.Southwest Univ Sci & Technol, Joint Lab Extreme Condit Matter Properties, Mianyang 621010, Sichuan, Peoples R China; 3.Chongqing Three Gorges Univ, Sch Elect & Informat Engn, Chongqing 404000, Wanzhou, Peoples R China; 4.Henan Normal Univ, Sch Phys, Xinxiang 453007, Henan, Peoples R China; 5.Lanzhou Univ Technol, Sch Sci, Lanzhou 730050, Peoples R China;
推荐引用方式 GB/T 7714	Cheng, T.,Ma, Q.,Gao, H.,et al. Enhanced photocatalytic activity, mechanism and potential application of I-doped-Bi4Ti3O12 photocatalysts[J]. MATERIALS TODAY CHEMISTRY,2022,23.
APA	Cheng, T..,Ma, Q..,Gao, H..,Meng, S..,Lu, Z..,...&Yang, H..(2022).Enhanced photocatalytic activity, mechanism and potential application of I-doped-Bi4Ti3O12 photocatalysts.MATERIALS TODAY CHEMISTRY,23.
MLA	Cheng, T.,et al."Enhanced photocatalytic activity, mechanism and potential application of I-doped-Bi4Ti3O12 photocatalysts".MATERIALS TODAY CHEMISTRY 23(2022).