Enhanced photocatalytic degradation of methylene blue under visible irradiation on graphene@TiO2 dyade structure

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	Enhanced photocatalytic degradation of methylene blue under visible irradiation on graphene@TiO2 dyade structure
	Zhao, DL; Sheng, GD; Chen, CL; Wang, XK
刊名	APPLIED CATALYSIS B-ENVIRONMENTAL
	2012
英文摘要	Electron-hole recombination limits the efficiency of TiO2. We have investigated the efficacy with which the graphene@TiO2 "dyade"-like structure reduced charge recombination and enhanced reactivity. A visible-light photocatalysis of graphene@TiO2 "dyade"-like structure was synthesized, and photocatalytic degradation of organic compounds over the UV and visible-light spectrum regions was investigated. The graphene@TiO2 had anatase phase and was able to absorb a high amount of photo energy in the visible-light region, driving effectively photochemical degradation reactions. There were more (OH)-O-center dot radicals produced by the graphene@TiO2 (1:3) than by pure TiO2 under UV and visible-light irradiation. Graphene can enhance the photocatalytic activity of TiO2 in two aspects, namely, e(-) transportation and adsorption. This work provides new insight into the fabrication of graphene@TiO2 as a high performance visible-light photocatalyst and facilitates its application in photocatalytic degradation of organic compounds. (C) 2011 Elsevier B.V. All rights reserved.
学科主题	等离子体物理与核聚变研究
WOS记录号	WOS:000300528500034
公开日期	2012-07-09
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn/handle/334002/5760]
专题	合肥物质科学研究院_中科院等离子体物理研究所
推荐引用方式 GB/T 7714	Zhao, DL,Sheng, GD,Chen, CL,et al. Enhanced photocatalytic degradation of methylene blue under visible irradiation on graphene@TiO2 dyade structure[J]. APPLIED CATALYSIS B-ENVIRONMENTAL,2012.
APA	Zhao, DL,Sheng, GD,Chen, CL,&Wang, XK.(2012).Enhanced photocatalytic degradation of methylene blue under visible irradiation on graphene@TiO2 dyade structure.APPLIED CATALYSIS B-ENVIRONMENTAL.
MLA	Zhao, DL,et al."Enhanced photocatalytic degradation of methylene blue under visible irradiation on graphene@TiO2 dyade structure".APPLIED CATALYSIS B-ENVIRONMENTAL (2012).