Turn-on Fluorescence Detection of Lead Ions Based on Accelerated Leaching of Gold Nanoparticles on the Surface of Graphene

	Turn-on Fluorescence Detection of Lead Ions Based on Accelerated Leaching of Gold Nanoparticles on the Surface of Graphene
	Fu, XL ; Lou, TT ; Chen, ZP ; Lin, M ; Feng, WW ; Chen, LX
发表期刊	ACS APPLIED MATERIALS & INTERFACES
ISSN	1944-8244
	2012-04
卷号	4 期号:2 页码:1080-1086
关键词	Lead Ions Fluorescence Detection Graphene Gold Nanoparticles Leaching
产权排序	[Fu, Xiuli; Lou, Tingting; Chen, Zhaopeng; Lin, Meng; Feng, Weiwei; Chen, Lingxin] Chinese Acad Sci, Yantai Inst Coastal Zone Res, Key Lab Coastal Zone Environm Proc, Yantai 264003, Peoples R China; [Fu, Xiuli; Lou, Tingting; Chen, Zhaopeng; Lin, Meng; Feng, Weiwei; Chen, Lingxin] Yantai Inst Coastal Zone Res, Shandong Prov Key Lab Coastal Zone Environm Proc, Yantai 264003, Peoples R China; [Fu, Xiuli; Lou, Tingting] Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
通讯作者	Chen, LX (reprint author), Chinese Acad Sci, Yantai Inst Coastal Zone Res, Key Lab Coastal Zone Environm Proc, Yantai 264003, Peoples R China.,lxchen@yic.ac.cn
作者部门	中科院海岸带环境过程与生态修复重点实验室
英文摘要	A novel, platform for effective "turn-on" fluorescence sensing of lead ions (Pb2+) in aqueous solution was developed based on gold nanoparticle (AuNP)-functionalized graphene. The AuNP-functionalized graphene exhibited minimal background fluorescence because of the extraordinarily high quenching ability of AuNPs. Interestingly, the AuNP-functionalized graphene underwent fluorescence restoration as well as significant enhancement upon adding Pb2+, which was attributed to the fact that Pb2+ could accelerate the leaching rate. of the AuNPs on graphene surfaces in the presence of both thiosulfate (S2O32-) and 2-mercaptoethanol (2 ME) Consequently, this could be utilized as the basis for selective defection of Pb2+. With the optimum conditions chosen the:relative fluorescence intensity showed good linearity versus logarithm concentration of Pb2+ in the range of 50-1000 nM (R = 0.9982), and a detection limit of 10 nM. High selectivity over common coexistent metal ions was also demonstrated: The practical application had been carried out for determination of Pb2+ in tap water and mineral water samples. The Pb2+-specific "turn-on" fluorescence sensor, based on Pb2+ accelerated leaching of AuNPs on the surface of graphene, provided new opportunities for highly sensitive and selective Pb2+ detection in aqueous media.
资助机构	National Natural Science Foundation of China[20975089]; Chinese Academy of Sciences[KZCX2-EW-206]; Department of Science and Technology of Shandong Province[BS2009DX006]; Department of Science and Technology of Yantai City of China[2007156, 2011426]
收录类别	SCI
语种	英语
文献类型	期刊论文
条目标识符	http://ir.yic.ac.cn/handle/133337/6072
专题	中国科学院海岸带环境过程与生态修复重点实验室
推荐引用方式 GB/T 7714	Fu, XL,Lou, TT,Chen, ZP,et al. Turn-on Fluorescence Detection of Lead Ions Based on Accelerated Leaching of Gold Nanoparticles on the Surface of Graphene[J]. ACS APPLIED MATERIALS & INTERFACES,2012,4(2):1080-1086.
APA	Fu, XL,Lou, TT,Chen, ZP,Lin, M,Feng, WW,&Chen, LX.(2012).Turn-on Fluorescence Detection of Lead Ions Based on Accelerated Leaching of Gold Nanoparticles on the Surface of Graphene.ACS APPLIED MATERIALS & INTERFACES,4(2),1080-1086.
MLA	Fu, XL,et al."Turn-on Fluorescence Detection of Lead Ions Based on Accelerated Leaching of Gold Nanoparticles on the Surface of Graphene".ACS APPLIED MATERIALS & INTERFACES 4.2(2012):1080-1086.

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