Microwave-radiated synthesis of gold nanoparticles/carbon nanotubes composites and its application to voltammetric detection of trace mercury(II)

被引：109

作者：

Xu, He ^{[1
]}

Zeng, Liping ^{[1
]}

Xing, Sujie ^{[1
]}

Shi, Guoyue ^{[1
]}

Xian, Yuezhong ^{[1
]}

Lin, Litong ^{[1
]}

机构：

[1] E China Normal Univ, Dept Chem, Shanghai 200062, Peoples R China

来源：

ELECTROCHEMISTRY COMMUNICATIONS | 2008年 / 10卷 / 12期

关键词：

Microwave-irradiated synthesis; Gold nanoparticles; Carbon nanotubes; Voltammetry; Mercury;

D O I：

10.1016/j.elecom.2008.09.030

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Gold nanoparticles/carbon nanotubes (Au-NPs/CNTs) composites were rapidly synthesized by microwave radiation, and firstly applied for the determination of trace mercury(II) by anodic stripping voltammetry (ASV). The structure and composition of the synthesized Au-NPs/CNTs nanocomposites were characterized by transmission electron microscopy (TEM), energy dispersive X-ray spectroscopy (EDX), UV-vis absorption spectroscopy and cyclic voltammetry. Au-NPs/CNTs nanocomposites modified glassy carbon electrode (Au-NPs/CNTs/GCE) exhibited excellent performance for Hg(II) analysis. A wide linear range (5 x 10-(10)-1.25 x 10(-6) mol/L) and good repeatability (relative standard deviation of 1.84%) were obtained for Hg(II) detection. The limit of detection was found to be 3 x 10(-10) mol/L (0.06 mu g/L) at 2 min accumulation, while the World Health Organization's guideline value of mercury for drinking water is 1 mu g/L, suggesting the proposed method may have practical utility. (C) 2008 Elsevier B.V. All rights reserved.

引用

页码：1839 / 1843

页数：5

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