Graphene-assisted enhancement of photocatalytic activity of bismuth ferrite nanoparticles

doi:10.1007/s11164-013-1204-2

CORC > 兰州理工大学 > 兰州理工大学 > 省部共建有色金属先进加工与再利用国家重点实验室

	Graphene-assisted enhancement of photocatalytic activity of bismuth ferrite nanoparticles
	Xian, T.1,2; Yang, H.1,2; Di, L. J.2; Dai, J. F.1,2
刊名	RESEARCH ON CHEMICAL INTERMEDIATES
	2015-01
卷号	41 期号:1 页码:433-441
关键词	Bi2Fe4O9-graphene nanocomposites Photocatalysis Photoexcited electron-hole pairs Hydroxy radicals
ISSN号	0922-6168
DOI	10.1007/s11164-013-1204-2
英文摘要	Bismuth ferrite (Bi2Fe4O9) nanoparticles were synthesized via a polyacrylamide gel route. Bi2Fe4O9-graphene nanocomposites were fabricated by mixing Bi2Fe4O9 nanoparticles and graphene into absolute ethanol solution followed by thermal drying. Transmission electron microscope observation reveals that Bi2Fe4O9 nanoparticles are well assembled onto graphene sheets. The photocatalytic activity of the prepared samples was evaluated by the degradation of methyl orange under simulated sunlight irradiation, revealing that Bi2Fe4O9-graphene nanocomposites exhibit an enhanced photocatalytic activity compared to bare Bi2Fe4O9 nanoparticles. This can be explained by the fact that the photogenerated electrons are captured by graphene, leading to an increased availability of h (+) for the photocatalytic reaction. In addition, it is found that hydroxyl ((OH)-O-center dot) radicals, detected by the photoluminescence technique using coumarin as a probe molecule, are produced on the irradiated Bi2Fe4O9 and Bi2Fe4O9-graphene nanocomposite; especially, an enhanced yield is observed for the latter.
资助项目	National Natural Science Foundation of China[50962009][51262018] ; Hongliu Outstanding Talents Foundation of Lanzhou University of Technology[J201205]
WOS研究方向	Chemistry
语种	英语
出版者	SPRINGER
WOS记录号	WOS:000347297200043
状态	已发表
内容类型	期刊论文
源URL	[http://119.78.100.223/handle/2XXMBERH/34154]
专题	省部共建有色金属先进加工与再利用国家重点实验室材料科学与工程学院理学院
通讯作者	Yang, H.
作者单位	1.Lanzhou Univ Technol, State Key Lab Gansu Adv Nonferrous Met Mat, Lanzhou 730050, Peoples R China 2.Lanzhou Univ Technol, Sch Sci, Lanzhou 730050, Peoples R China
推荐引用方式 GB/T 7714	Xian, T.,Yang, H.,Di, L. J.,et al. Graphene-assisted enhancement of photocatalytic activity of bismuth ferrite nanoparticles[J]. RESEARCH ON CHEMICAL INTERMEDIATES,2015,41(1):433-441.
APA	Xian, T.,Yang, H.,Di, L. J.,&Dai, J. F..(2015).Graphene-assisted enhancement of photocatalytic activity of bismuth ferrite nanoparticles.RESEARCH ON CHEMICAL INTERMEDIATES,41(1),433-441.
MLA	Xian, T.,et al."Graphene-assisted enhancement of photocatalytic activity of bismuth ferrite nanoparticles".RESEARCH ON CHEMICAL INTERMEDIATES 41.1(2015):433-441.