Heterogeneous synthesis of nitrogen-doped carbon dots prepared via anhydrous citric acid and melamine for selective and sensitive

doi:10.1016/j.snb.2017.08.130

CORC > 青海盐湖研究所 > 中国科学院青海盐湖研究所 > 盐湖资源综合利用工程技术中心

	Heterogeneous synthesis of nitrogen-doped carbon dots prepared via anhydrous citric acid and melamine for selective and sensitive
	lqbal, Anam; lqbal, Kanwal; Xu, Lige; Li, Bo; Gong, Deyan; Liu, Xiaoyu; Guo, Yali; Liu, Weisheng; Qin, Wenwu; Guo, Huichen
刊名	SENSORS AND ACTUATORS B-CHEMICAL
	2018-02
卷号	255 页码:1130-1138
ISSN号	0925-4005
DOI	10.1016/j.snb.2017.08.130
英文摘要	Herein a new kind of convenient, low-cost, environmentally friendly and high-output heterogeneous one step synthesis of nitrogen-doped carbon dots (N-CDs) was developed by reacting anhydrous citric acid used as the carbon source and melamine as the surface passivation for nitrogen source without the use of any acid, alkali, organic solvents or metal ions along with high quantum yield (40% +/- 0.06) by solid state method. The emission spectrum shows a strong peak at 440 nm when excited at 360 nm, in the detection only the Hg (II) can readily quench the Photoluminescence (PL) of the N-CDs due to the strong electrostatic interaction and electron transfer between N-CDs and Hg (II), upon the addition of GSH PL of the N-CDs can be recovered owing to the preferred combination of Hg (II) and GSH by forming the Hg (II)-S or Hg (II)-NH bond indicating a remarkably high selectivity towards Hg2+ and biothiols (especially for GSH) among other metals and amino acids with a detection limit as low as 20 nM and 40 nM. With no apparent cytotoxicity, N-CDs could enter the baby hamster kidney (BHK) cells, indicating a practical potential probe for cellular imaging and labeling. Endowed the resulting N-CDs possess excitation dependent PL properties with relatively high sensitivity and selectivity, for the detection of Hg (II) and GSH in aqueous media, environmental and biological sensing applications. (C) 2017 Elsevier B.V. All rights reserved.
内容类型	期刊论文
源URL	[http://ir.isl.ac.cn/handle/363002/34433]
专题	青海盐湖研究所_盐湖资源综合利用工程技术中心
推荐引用方式 GB/T 7714	lqbal, Anam,lqbal, Kanwal,Xu, Lige,et al. Heterogeneous synthesis of nitrogen-doped carbon dots prepared via anhydrous citric acid and melamine for selective and sensitive[J]. SENSORS AND ACTUATORS B-CHEMICAL,2018,255:1130-1138.
APA	lqbal, Anam.,lqbal, Kanwal.,Xu, Lige.,Li, Bo.,Gong, Deyan.,...&Guo, Huichen.(2018).Heterogeneous synthesis of nitrogen-doped carbon dots prepared via anhydrous citric acid and melamine for selective and sensitive.SENSORS AND ACTUATORS B-CHEMICAL,255,1130-1138.
MLA	lqbal, Anam,et al."Heterogeneous synthesis of nitrogen-doped carbon dots prepared via anhydrous citric acid and melamine for selective and sensitive".SENSORS AND ACTUATORS B-CHEMICAL 255(2018):1130-1138.