One-pot electrochemical synthesis of functionalized fluorescent carbon dots and their selective sensing for mercury ion

被引：240

作者：

Hou, Yuxin ^{[1
]}

Lu, Qiujun ^{[1
]}

Deng, Jianhui ^{[1
]}

Li, Haitao ^{[1
]}

Zhang, Youyu ^{[1
]}

机构：

[1] Hunan Normal Univ, Coll Chem & Chem Engn, Key Lab Chem Biol & Tradit Chinese Med Res, Minist Educ, Changsha 410081, Hunan, Peoples R China

来源：

ANALYTICA CHIMICA ACTA | 2015年 / 866卷

基金：

国家教育部博士点专项基金资助; 中国国家自然科学基金;

关键词：

Functionalized carbon dots; Electrochemical carbonization; One-pot synthesis; Fluorescent sensor; Mercury ions; Real water samples; NANOPARTICLES; NANOCRYSTALS; NITROGEN; SULFUR;

D O I：

10.1016/j.aca.2015.01.039

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

We propose a simple, economical, and one-pot method to synthesize water-soluble functionalized fluorescent carbon dots (C-Dots) through electrochemical carbonization of sodium citrate and urea. The as-prepared C-Dots have good photostability and exhibit a high quantum yield of 11.9%. The sizes of the C-Dots are mainly distributed in the range of 1.0-3.5 nm with an average size of 2.4 nm. It has been further used as a novel label-free sensing probe for selective detection of Hg2+ ions with detection limit as low as 3.3 nM. The detection linear range is 0.01-10 mu M. The as-prepared C-Dots are also successfully applied for the determination of Hg2+ in real water samples. (C) 2015 Elsevier B.V. All rights reserved.

引用

页码：69 / 74

页数：6

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