Fabrication of gold nanoparticles/L-cysteine functionalized graphene oxide nanocomposites and application for nitrite detection

被引：39

作者：

Pan, Fei ^{[1
]}

Chen, Dandan ^{[1
]}

Zhuang, Xuming ^{[1
]}

Wu, Xuran ^{[1
]}

Luan, Feng ^{[1
]}

Zhang, Shuang ^{[1
]}

Wei, Jiaru ^{[1
]}

Xia, Shuang ^{[1
]}

Li, Xiao ^{[1
]}

机构：

[1] Yantai Univ, Coll Chem & Chem Engn, Yantai 264005, Peoples R China

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2018年 / 744卷

基金：

中国国家自然科学基金;

关键词：

Gold nanoparticles; Graphene oxide; L-cysteine; Nitrite; Electrochemical sensor; DISPERSED CARBON NANOTUBES; PEROXIDASE-LIKE CATALYSIS; ELECTROCHEMICAL SENSOR; FLUORESCENCE DETECTION; NITRATE; COMPOSITE; ION; ELECTROCATALYSIS; ELECTROPHORESIS; ELECTRODES;

D O I：

10.1016/j.jallcom.2018.02.053

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

In this paper, the gold nanoparticles/L-cysteine functionalized graphene oxide (AuNPs/GO-SH) nanocomposites was synthetized with a simple approach for nitrite determination. The prepared nanocomposites were characterized by scanning electron microscopy, transmission electron microscopy, X-ray diffraction and Raman spectroscopy, etc. A pair of well-defined redox peaks was founded for AuNPs/GO-SH hybrids with a formal potential of 0.90 V in 0.1M phosphate buffered solution by cyclic voltammetry. Under optimal conditions, the sensor could detect nitrite as low as 0.25 mu M with a wide linear response range from 5 to 1000 mu M, high sensitivity and excellent selectivity. The superior results of nitrite determination in pickled radish showed a promising application for determination of nitrite in food. (C) 2018 Elsevier B.V. All rights reserved.

引用

页码：51 / 56

页数：6

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