Nitrogen-doped carbon quantum dots: Facile synthesis and application as a "turn-off" fluorescent probe for detection of Hg2+ ions

	Nitrogen-doped carbon quantum dots: Facile synthesis and application as a "turn-off" fluorescent probe for detection of Hg2+ ions
	Zhang, Ruizhong ; Chen, Wei
刊名	biosensors & bioelectronics
	2014
卷号	55 页码:83-90
关键词	ATOMIC-ABSORPTION-SPECTROMETRY PLASMA-MASS SPECTROMETRY LABEL-FREE DETECTION X-RAY-FLUORESCENCE HYDROTHERMAL TREATMENT SELECTIVE DETECTION GRAPHENE OXIDE NATURAL-WATER FOLIC-ACID ICP-MS
通讯作者	chen,w
英文摘要	a facile, economical and straightforward hydrothermal strategy is used to prepare highly luminescent nitrogen-doped carbon quantum dots (n-cqds) by using folic acid as both carbon and nitrogen sources. the as-prepared n-cqds have an average size of 4.5 +/- 1.0 nm and exhibit excitation wavelengthdependent fluorescence with the maximum emission and excitation at 390 and 470 nm, respectively. furthermore, due to the effective quenching effect of hg2+ ions, such n-cqds are found to serve as an effective fluorescent sensing platform for lable-free sensitive detection of hg2+ ions with a detection limit of 0.23 mu m. the selectivity experiments reveal that the fluorescent sensor is specific for hg2+ even with interference by high concentrations of other metal ions. most importantly, the n-cqds-based hg2+ ions sensor can be successfully applied to the determination of hg2+ in tap water and real lake water samples. with excellent sensitivity and selectivity, such stable and cheap carbon materials are potentially suitable for monitoring of he, in environmental application. (c) 2013 elsevier b.v. all rights reserved.
收录类别	SCI
语种	英语
公开日期	2015-05-26
内容类型	期刊论文
源URL	[http://ir.ciac.jl.cn/handle/322003/51056]
专题	长春应用化学研究所_长春应用化学研究所知识产出_期刊论文
推荐引用方式 GB/T 7714	Zhang, Ruizhong,Chen, Wei. Nitrogen-doped carbon quantum dots: Facile synthesis and application as a "turn-off" fluorescent probe for detection of Hg2+ ions[J]. biosensors & bioelectronics,2014,55:83-90.
APA	Zhang, Ruizhong,&Chen, Wei.(2014).Nitrogen-doped carbon quantum dots: Facile synthesis and application as a "turn-off" fluorescent probe for detection of Hg2+ ions.biosensors & bioelectronics,55,83-90.
MLA	Zhang, Ruizhong,et al."Nitrogen-doped carbon quantum dots: Facile synthesis and application as a "turn-off" fluorescent probe for detection of Hg2+ ions".biosensors & bioelectronics 55(2014):83-90.