Nanoporous gold as non-enzymatic sensor for hydrogen peroxide

被引：208

作者：

Meng, Fanhui ^{[2
]}

Yan, Xiuling ^{[2
,3
]}

Liu, Jianguo ^{[1
]}

Gu, Jun ^{[1
]}

Zou, Zhigang ^{[1
]}

机构：

[1] Nanjing Univ, Ecomat & Renewable Energy Res Ctr, Dept Mat Sci & Engn, Natl Lab Solid State Microstruct, Nanjing 210093, Jiangsu, Peoples R China

[2] Shandong Univ, Sch Chem & Chem Engn, Jinan 250100, Peoples R China

[3] Ili Normal Univ, Sch Chem & Biosci, Xinjiang 835000, Peoples R China

来源：

ELECTROCHIMICA ACTA | 2011年 / 56卷 / 12期

基金：

美国国家科学基金会;

关键词：

Nanoporous gold; Electrocatalysis; H(2)O(2) detection; H(2)O(2) sensor; Dealloying; ELECTROCATALYTIC REDUCTION; ELECTROCHEMICAL DETECTION; ELECTRODE; H2O2; OXIDATION; SURFACE; NANOPARTICLES; FABRICATION; MECHANISM; GLUCOSE;

D O I：

10.1016/j.electacta.2011.02.105

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Nanoporous gold (NPG) fabricated by dealloying Au-Ag film was investigated for the non-enzymatic detection of H(2)O(2). The apparent activation energy of H(2)O(2) electrochemical reduction on NPG was found to be as low as similar to 30 kJ mol(-1). The reduction currents at -0.4V vs. SCE demonstrated a strict linear dependence in a wide H(2)O(2) concentration region from 10 mu M to 8 mM with a detection limit 3.26 mu M. Furthermore, the biosensor based on NPG exhibited high selectivity, good reproducibility, and long-term stability. These results indicate that NPG could be a promising electrochemical material for H(2)O(2) detection. (C) 2011 Elsevier Ltd. All rights reserved.

引用

页码：4657 / 4662

页数：6

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