Enhanced photocatalytic activity of NaBH4 reduced BiFeO3 nanoparticles for rhodamine B decolorization

doi:10.3390/ma10101118

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	Enhanced photocatalytic activity of NaBH4 reduced BiFeO3 nanoparticles for rhodamine B decolorization
	Di, Lijing 1,2; Yang, Hua 1; Xian, Tao 2; Chen, Xiujuan 1
刊名	Materials
	2017-09-22
卷号	10 期号:10
关键词	High resolution transmission electron microscopy Iron compounds Nanoparticles Oxygen vacancies Photocatalysis Photocatalytic activity Photoelectron spectroscopy Reusability Rhodium compounds Sodium Borohydride BiFeO3 Comprehensive analysis Photocatalytic efficiency Photocatalytic reactions Photogenerated charge Photogenerated electrons Surface oxygen vacancies X ray photoelectron spectra
ISSN号	1996-1944
DOI	10.3390/ma10101118
英文摘要	In this work, oxygen vacancies were introduced onto the surface of BiFeO3 nanoparticles by NaBH4 reduction method to yield oxygen-deficient BiFeO3-x samples. Comprehensive analysis on the basis of high-resolution transmission electron microscopy (HRTEM) observation and X-ray photoelectron spectrum (XPS) confirms the existence of surface oxygen vacancies on the BiFeO3-x nanoparticles. The photocatalytic activity of as-prepared BiFeO3-x samples was evaluated by the decolorization of rhodamine B (RhB) under simulated sunlight irradiation. The experimental results indicate that the photocatalytic activity of samples is highly related to the NaBH4 reduction time, and the BiFeO3-x sample reduced for 40 min exhibits the highest photocatalytic efficiency, which is much higher than that of pristine BiFeO3 nanoparticles. This can be explained by the fact that the surface oxygen vacancies act as photoinduced charges acceptors and adsorption sites suppress the recombination of photogenerated charges, leading to an increasing availability of photogenerated electrons and holes for photocatalytic reaction. In addition, the obtained BiFeO3-x sample exhibits good photocatalytic reusability. © 2017 by the authors. Licensee MDPI, Basel, Switzerland.
资助项目	Youth Science Foundation of Qinghai Normal University[15ZR07]
WOS研究方向	Materials Science
语种	英语
出版者	MDPI AG, Postfach, Basel, CH-4005, Switzerland
WOS记录号	WOS:000414639000013
状态	已发表
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/114668]
专题	理学院机电工程学院
通讯作者	Yang, Hua
作者单位	1.Lanzhou Univ Technol, State Key Lab Adv Proc & Recycling Non Ferrous Me, Lanzhou 730050, Gansu, Peoples R China 2.Qinghai Normal Univ, Coll Phys & Elect Informat Engn, Xining 810008, Qinghai, Peoples R China
推荐引用方式 GB/T 7714	Di, Lijing,Yang, Hua,Xian, Tao,et al. Enhanced photocatalytic activity of NaBH4 reduced BiFeO3 nanoparticles for rhodamine B decolorization[J]. Materials,2017,10(10).
APA	Di, Lijing,Yang, Hua,Xian, Tao,&Chen, Xiujuan.(2017).Enhanced photocatalytic activity of NaBH4 reduced BiFeO3 nanoparticles for rhodamine B decolorization.Materials,10(10).
MLA	Di, Lijing,et al."Enhanced photocatalytic activity of NaBH4 reduced BiFeO3 nanoparticles for rhodamine B decolorization".Materials 10.10(2017).