A glassy carbon electrode modified with graphene oxide and silver nanoparticles for amperometric determination of hydrogen peroxide

被引：59

作者：

Noor, An'amt Mohamed ^{[1
,2
]}

Shahid, Muhammad Mehmood ^{[1
]}

Rameshkumar, Perumal ^{[1
]}

Huang, Nay Ming ^{[1
]}

机构：

[1] Univ Malaya, Fac Sci, Low Dimens Mat Res Ctr, Dept Phys, Kuala Lumpur 50603, Malaysia

[2] Univ Malaysia Kelantan, Fac Earth Sci, Jeli Campus, Jeli 17600, Kelantan, Malaysia

来源：

MICROCHIMICA ACTA | 2016年 / 183卷 / 02期

关键词：

Cyclic voltammetry; Electrochemical impedance spectroscopy; Transmission electron microscopy; Nyquist plot; Electrocatalysis; GOLD NANOPARTICLES; SENSOR; H2O2; NANOCOMPOSITES; MATRIX; REDUCTION; IONS;

D O I：

10.1007/s00604-015-1679-1

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

The article describes a glassy carbon electrode (GCE) modified with a nanocomposite consisting of graphene oxide and silver nanoparticles, and its application to amperometric determination of hydrogen peroxide (H2O2). Cyclic voltammetry with this modified electrode reveals efficient electrocatalytic reduction of H2O2. The response to H2O2 at a working potential of -0.3 V (vs. Ag/AgCl) is linear in the 100 mu M to 11 mM concentration range at pH 7.2. The limit of detection is 28.3 mu M (at an S/N ratio of 3). Good selectivity is observed over physiological interferents such as dopamine, ascorbic acid, uric acid and glucose.

引用

页码：911 / 916

页数：6

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