Electro-oxidation nitrite based on copper calcined layered double hydroxide and gold nanoparticles modified glassy carbon electrode

被引：39

作者：

Cui, Lin ^{[1
]}

Meng, Xiaomeng ^{[1
]}

Xu, Minrong ^{[1
]}

Shang, Kun ^{[1
]}

Ai, Shiyun ^{[1
]}

Liu, Yinping ^{[1
]}

机构：

[1] Shandong Agr Univ, Coll Chem & Mat Sci, Tai An 271018, Shandong, Peoples R China

来源：

ELECTROCHIMICA ACTA | 2011年 / 56卷 / 27期

基金：

中国国家自然科学基金;

关键词：

Calcined layered double hydroxides (CLDHs); Gold nanoparticles (AuNPs); Nitrite; Non-enzymatic; NONENZYMATIC GLUCOSE SENSOR; CYTOCHROME-C; ELECTROCATALYTIC REDUCTION; DIRECT ELECTROCHEMISTRY; HYDROGEN-PEROXIDE; OXIDATION; BIOSENSOR; FILM; NANOTUBES; HEMOGLOBIN;

D O I：

10.1016/j.electacta.2011.08.026

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

In this paper, a novel nitrite sensor was constructed based on electrodeposition of gold nanoparticles (AuNPs) on a copper calcined layered double hydroxide (Cu-CLDH) modified glassy carbon electrode. Electrochemical experiments showed that AuNPs/CLDH composite film exhibited excellent electrocatalytic oxidation activity with nitrite due to the synergistic effect of the Cu-CLDH with AuNPs. The fabricated sensor exhibited excellent performance for nitrite detection within a wide concentration interval of 1-191 mu M and with a detection limit of 0.5 mu M. The superior electrocatalytic response to nitrite was mainly attributed to the large surface area, minimized diffusion resistance, and enhanced electron transfer of the Cu-CLDH and AuNPs composition film. This platform offers a novel route for nitrite sensing with wide analytical applications and will supply the practical applications for a variety of simple, robust, and easy-to-manufacture analytical approaches in the future. (C) 2011 Elsevier Ltd. All rights reserved.

引用

页码：9769 / 9774

页数：6

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