Gold nanoparticles mediate the assembly of manganese dioxide nanoparticles for H2O2 amperometric sensing

被引：74

作者：

Li, Yali ^{[1
,2
]}

Zhang, Jia ^{[1
,2
]}

Zhu, Hui ^{[1
]}

Yang, Fan ^{[1
]}

Yang, Xiurong ^{[1
,2
]}

机构：

[1] Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Electroanalyt Chem, Changchun 130022, Jilin, Peoples R China

[2] Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China

来源：

ELECTROCHIMICA ACTA | 2010年 / 55卷 / 18期

基金：

中国国家自然科学基金;

关键词：

Hydrogen peroxide; Amperometric sensor; Nano-MnO2; AuNPs; Amperometry; FLOW-INJECTION ANALYSIS; CARBON-PASTE ELECTRODE; HYDROGEN-PEROXIDE; HORSERADISH-PEROXIDASE; MNO2; NANOPARTICLES; ELECTROGENERATED CHEMILUMINESCENCE; AQUEOUS-SOLUTIONS; BIOSENSOR; FILM; GLUCOSE;

D O I：

10.1016/j.electacta.2010.04.017

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Aggregates of gold nanoparticles (AuNPs) that mediate the assembly of manganese dioxide nanoparticles (nano-MnO2) for hydrogen peroxide (H2O2) amperometric sensing have been developed. The aggregates were prepared by directly mixing citric-capped AuNPs and poly(allylamine hydrochloride) (PAH)-capped nano-MnO2 using an electrostatic self-assembly strategy. The prepared sensor exhibited excellent electrochemical behaviors and a wide linear range from 7.80 x 10(-7) to 8.36 x 10(-4) M with a detection limit of 4.68 x 10(-8) M (S/N = 3) because of the synergistic influence of excellent catalytic ability of MnO2 and good electrical conductivity of AuNPs. In addition, its applicability to practical samples for measuring H2O2 in toothpastes has obtained a satisfactory result. Due to the ease of preparation and excellent properties of the sensor, indicating the MnO2-AuNP material may be a potential H2O2 sensor. (C) 2010 Elsevier Ltd. All rights reserved.

引用

页码：5123 / 5128

页数：6

共 37 条

[1] Direct electrochemistry and electrocatalysis of horseradish peroxidase immobilized in sol-gel-derived ceramic-carbon nanotube nanocomposite film [J].