"Turn-on" Fluorescence Detection of Lead Ions Based on Accelerated Leaching of Gold Nanoparticles on the Surface of Graphene
Fu, Xiuli1,2,3; Lou, Tingting1,2,3; Chen, Zhaopeng1,2; Lin, Meng1,2; Feng, Weiwei1,2; Chen, Lingxin1,2
发表期刊ACS APPLIED MATERIALS & INTERFACES
2012-02-01
卷号4期号:2页码:1080-1086
关键词Lead Ions Fluorescence Detection Graphene Gold Nanoparticles Leaching
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.
文章类型Article
收录类别SCI
语种英语
关键词[WOS]HEAVY-METAL IONS ; COLORIMETRIC DETECTION ; OXIDE ; SILVER ; PB2+ ; NANORIBBONS ; CHEMISTRY ; PLATFORM ; DNAZYME ; SINGLE
研究领域[WOS]Science & Technology - Other Topics ; Materials Science
WOS记录号WOS:000300644500084
引用统计
被引频次:128[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.yic.ac.cn/handle/133337/9065
专题中国科学院海岸带环境过程与生态修复重点实验室
作者单位1.Chinese Acad Sci, Yantai Inst Coastal Zone Res, Key Lab Coastal Zone Environm Proc, Yantai 264003, Peoples R China
2.Yantai Inst Coastal Zone Res, Shandong Prov Key Lab Coastal Zone Environm Proc, Yantai 264003, Peoples R China
3.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
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Fu, Xiuli,Lou, Tingting,Chen, Zhaopeng,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, Xiuli,Lou, Tingting,Chen, Zhaopeng,Lin, Meng,Feng, Weiwei,&Chen, Lingxin.(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, Xiuli,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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