Gold nanoparticles/graphene oxide composite for electrochemical sensing of hydroxylamine and hydrogen peroxide

被引：17

作者：

Yang, Yu Jun ^{[1
]}

Li, Weikun ^{[1
]}

机构：

[1] Xuchang Univ, Sch Chem & Chem Engn, Xuchang 461000, Peoples R China

来源：

FULLERENES NANOTUBES AND CARBON NANOSTRUCTURES | 2018年 / 26卷 / 04期

基金：

中国国家自然科学基金;

关键词：

Cetyltrimethyl ammonium bromide; graphene; gold nanoparticles; hydroxylamine; hydrogen peroxide; GLASSY-CARBON ELECTRODE; REDUCED GRAPHENE OXIDE; NANOTUBE PASTE ELECTRODE; METAL-ORGANIC FRAMEWORK; SILVER NANOPARTICLES; ELECTROCATALYTIC OXIDATION; AMPEROMETRIC DETECTION; HOMOGENOUS MEDIATOR; SENSITIVE DETECTION; FACILE SYNTHESIS;

D O I：

10.1080/1536383X.2018.1424711

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：

It has been discovered that the complex formed by cetyltrimethyl ammonium bromide (CTAB) and graphene oxide (GO) is highly stable in aqueous solution and adhesive to the glassy carbon electrode (GCE) surface in our previous research. In this work, the film of CTAB/GO complex was directly formed on GCE and gold nanoparticles were facilely incorporated into the matrix of CTAB/GO complex at the same time. Scanning electron microscopic (SEM) investigation shows that gold nanoparticles were distributed uniformly on the sheets of graphene. Cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS) and amperometry were used to investigate the electrochemical behaviors of AuNP/CTAB/GO. The obtained AuNP/CTAB/GO presents excellent catalytic capabilities towards the oxidation of hydroxylamine (HA) and the reduction of H2O2. The oxidation current of HA and the reduction current of H2O2 are linear with their concentrations in the range of 10 approximate to 1000M and 1.0 approximate to 5000M, respectively. The detection limits for HA and H2O2 are 3.5M and 0.67M, respectively. The mechanism of the oxidation of HA on AuNP/CTAB/GO modified GCE was also studied.

引用

页码：195 / 204

页数：10

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