Ionic liquid-induced strategy for carbon quantum dots/BiOX (X=Br, Cl)   hybrid nanosheets with superior visible light-driven photocatalysis

doi:10.1016/j.apcatb.2015.07.035

CORC > 北京大学 > 工学院

	Ionic liquid-induced strategy for carbon quantum dots/BiOX (X=Br, Cl) hybrid nanosheets with superior visible light-driven photocatalysis
	Xia, Jiexiang ; Di, Jun ; Li, Haitao ; Xu, Hui ; Li, Huaming ; Guo, Shaojun
刊名	APPLIED CATALYSIS B-ENVIRONMENTAL
	2016
关键词	BiOX nanosheets Carbon quantum dots Ionic liquids Photocatalysis Visible light irradiation SINGLE-CRYSTALLINE NANOSHEETS DOTS DEGRADATION PERFORMANCE NANOMATERIALS MICROSPHERES POLLUTANTS GRAPHENE FILM
DOI	10.1016/j.apcatb.2015.07.035
英文摘要	A novel one-step ionic liquid induced strategy has been reported for the controlled synthesis of carbon quantum dots (CQDs)/BiOX (X = Br, Cl) hybrid nanosheets with tunable CQDs loading contents. Such synthetic process allows the CQDs well dispersed on the surface of BiOX nanosheets. Three different types of pollutants, such as phenol rhodamine B (RhB), antibacterial agent ciprofloxacin (CIP) and endocrine disrupting chemical bisphenol A (BPA) were chosen to evaluate the photocatalytic activity of CQDs/BiOX composite nanosheets. They show very interesting CQDs loading content and X composition-dependent photocatalytic activity with 3 wft CQDs/BiOBr nanosheets showing the highest photocatalytic activity (much better than pure BiOBr nanosheets) for the degradation of RhB, CIP and BPA under visible light irradiation. The results reveal that there are three factors in promoting the photocatalysis of 3 wt%CQD/BiOBr nanosheets: high visible light absorbance, high separation efficiency of photo-induced electrons and holes and lower resistance. The active species trap experiments and electron spin resonance (ESR) reveal that during the photocatalytic process, hole and O-2(center dot-) become the dominant species for the degradation of pollutants. The unique strategy demonstrated here can be extended to other hybrid nanosheet systems, making it possible to design and tune advanced photocatalysts for other important chemical and catalytic reactions. (C) 2015 Elsevier B.V. All rights reserved.; National Nature Science Foundation of China [21206060, 21476098, 21471069]; Jiangsu Province [1102118C]; China Postdoctoral Science Foundation [2013T60506]; SCI(E); EI; ARTICLE; lhm@ujs.edu.cn; sjguo@coe.pku.edu.cn; 260-269; 181
语种	中文
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/422609]
专题	工学院
推荐引用方式 GB/T 7714	Xia, Jiexiang,Di, Jun,Li, Haitao,et al. Ionic liquid-induced strategy for carbon quantum dots/BiOX (X=Br, Cl) hybrid nanosheets with superior visible light-driven photocatalysis[J]. APPLIED CATALYSIS B-ENVIRONMENTAL,2016.
APA	Xia, Jiexiang,Di, Jun,Li, Haitao,Xu, Hui,Li, Huaming,&Guo, Shaojun.(2016).Ionic liquid-induced strategy for carbon quantum dots/BiOX (X=Br, Cl) hybrid nanosheets with superior visible light-driven photocatalysis.APPLIED CATALYSIS B-ENVIRONMENTAL.
MLA	Xia, Jiexiang,et al."Ionic liquid-induced strategy for carbon quantum dots/BiOX (X=Br, Cl) hybrid nanosheets with superior visible light-driven photocatalysis".APPLIED CATALYSIS B-ENVIRONMENTAL (2016).