Amperometric sensing of hydrogen peroxide on a modified electrode with layered Au/TiO2 nanofilms from self-assembly at air/water interface

被引：12

作者：

Yin, Xiangle ^{[1
]}

Duo, Manman ^{[1
]}

Xia, Yue ^{[1
]}

Huang, Wei ^{[1
]}

Li, Zelin ^{[1
]}

机构：

[1] Hunan Normal Univ, Key Lab Chem Biol & Tradit Chinese Med Res, Minist Educ China Chem & Chem Engn, Changsha 410081, Hunan, Peoples R China

来源：

JOURNAL OF ELECTROANALYTICAL CHEMISTRY | 2014年 / 720卷

基金：

中国国家自然科学基金;

关键词：

Nanoparticle; Self-assembly; Porous thin film; Hydrogen peroxide; Electrochemical sensor; HORSERADISH-PEROXIDASE; METHANOL OXIDATION; GOLD NANOPARTICLES; CARBON ELECTRODE; AG NANOPARTICLES; CO OXIDATION; H2O2; BIOSENSOR; SENSOR; TIO2;

D O I：

10.1016/j.jelechem.2014.02.017

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

An electrochemical sensor was fabricated based on a modified glassy carbon (GC) electrode with layered Au/TiO2 nanofilms for sensing of hydrogen peroxide. Both nanofilms of Au and TiO2 nanoparticles were obtained by self-assembly at air/water interface and were successively transferred onto the GC surface layer by layer. The mesoporous structure of the layered films and the synergistic effect between Au and TiO2 nanoparticles enhanced the electrocatalytic activity towards oxidation of H2O2. Under optimized conditions, the modified electrode demonstrated good performances in detection of H2O2. The linear range, detection limit and sensitivity for H2O2 sensing were 1 mu M-7 mM, 0.1 mu M (S/N = 3) and 664.3 mu A mM(-1) cm(-2), respectively. (C) 2014 Elsevier B.V. All rights reserved.

引用

页码：19 / 23

页数：5

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