Hydrothermal synthesis of nitrogen-doped carbon dots as a sensitive fluorescent probe for the rapid, selective determination of Hg2+

被引：13

作者：

Zhang, Yong ^{[1
]}

Jing, Na ^{[1
]}

Zhang, Junqiu ^{[1
]}

Wang, Yingte ^{[1
]}

机构：

[1] Shanxi Univ, Sch Chem & Chem Engn, Taiyuan, Shanxi, Peoples R China

来源：

INTERNATIONAL JOURNAL OF ENVIRONMENTAL ANALYTICAL CHEMISTRY | 2017年 / 97卷 / 09期

关键词：

Hydrothermal synthesis; nitrogen-doped carbon dots; ammonium citrate; urea; Hg2+; GRAPHENE QUANTUM DOTS; TURN-ON DETECTION; GREEN SYNTHESIS; MERCURY(II) IONS; NANOPARTICLES; NANODOTS; ELECTRODES; SPECIATION; ROUTE; CELLS;

D O I：

10.1080/03067319.2017.1355969

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

In the present work, a green synthetic method for producing nitrogen-doped carbon dots (NCDs) by using ammonium citrate and urea is introduced. The obtained NCDs were characterised by transmission electron microscopy, Fourier transform infrared spectra, UV-vis absorption and fluorescence spectra. The results showed that the prepared NCDs were spherical with a size of about 3.5 nm, emitting strong and stable blue fluorescence when excited at 352 nm. It was noting that the NCDs enable sensitive and selective determination of Hg2+ in tap water with a linear range of 0.01-5 mg L-1 based on a possible charge transfer process. The detection limit was 9.4 mu g L-1.

引用

页码：841 / 853

页数：13

共 45 条

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