Selective determination of Ag plus using Salecan derived nitrogen doped carbon dots as a fluorescent probe

被引：30

作者：

Li, Junjian ^{[1
]}

Zuo, Gancheng ^{[1
]}

Qi, Xiaoliang ^{[1
]}

Wei, Wei ^{[1
]}

Pan, Xiaohao ^{[1
]}

Su, Ting ^{[1
]}

Zhang, Jianfa ^{[1
]}

Dong, Wei ^{[1
]}

机构：

[1] Nanjing Univ Sci & Technol, Sch Chem Engn, Nanjing 210094, Jiangsu, Peoples R China

来源：

MATERIALS SCIENCE & ENGINEERING C-MATERIALS FOR BIOLOGICAL APPLICATIONS | 2017年 / 77卷

基金：

中国国家自然科学基金;

关键词：

Salecan; Nitrogen doped carbon dots; Ag plus detection; Fluorescence quenching; QUANTUM DOTS; GREEN SYNTHESIS; PHYSIOLOGICAL PH; LIVING CELLS; HUMAN SERUM; NANODOTS; SEMICONDUCTOR; SENSOR; ACIDS; IONS;

D O I：

10.1016/j.msec.2017.04.007

中图分类号：

TB3 [工程材料学]; R318.08 [生物材料学];

学科分类号：

0805 ; 080501 ; 080502 ;

摘要：

We report that nitrogen doped carbon dots (N-CDs) represent a viable fluorescent probe for the determination of Ag+. The N-CDs can be fairly easily prepared by a hydrothermal treatment method using Salecan and dicyandiamide as the precursors, display excitation/emission maxima of 350/438 nm. The N-CDs have an average diameter of about 3.8 nm. The N-CDs exhibited blue fluorescence (quantum yield of 13.2%) and could response to Ag+ selectively and sensitively. Other ions nearly had no interference. The probe has excellent selectivity, high sensitivity, and a linear response range that extends from 0 to 40 W. The limit of detection is as low as 1.12 x 10(-7) mol/L. The method was applied to the determination of Ag+ dissolved in water. (C) 2017 Elsevier B.V. All rights reserved.

引用

页码：508 / 512

页数：5

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