Differential pulse voltammetric determination of ascorbic acid in the presence of folic acid at electro-deposited NiO/graphene composite film modified electrode

被引：66

作者：

Liu, Bingdi ^{[1
]}

Luo, Liqiang ^{[1
]}

Ding, Yaping ^{[1
]}

Si, Xiaojing ^{[1
]}

Wei, Youli ^{[1
]}

Ouyang, Xiaoqian ^{[1
]}

Xu, Duo ^{[1
]}

机构：

[1] Shanghai Univ, Dept Chem, Shanghai 200444, Peoples R China

来源：

ELECTROCHIMICA ACTA | 2014年 / 142卷

基金：

中国国家自然科学基金;

关键词：

NiO; Graphene; Ascorbic acid; Electro-deposition; Differential pulse voltammetry; NONENZYMATIC GLUCOSE SENSOR; ADENINE-DINUCLEOTIDE; URIC-ACID; GRAPHENE; NIO; NANOPARTICLES; IMMUNOSENSOR; NANOCOMPOSITE; DOPAMINE; ASSAY;

D O I：

10.1016/j.electacta.2014.07.126

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

This paper demonstrated an electrochemical sensor based on NiO nanoparticles-graphene composite film (NiO/GR) modified glassy carbon electrode for detecting ascorbic acid (AA) in the presence of folic acid using differential pulse voltammetry. The obtained NiO/GR nanocomposite was fabricated by electro-deposition technology. The morphologies and interface properties of NiO/GR composite film were examined by scanning electron microscopy, energy dispersive X-ray spectroscopy and electrochemical impedance spectroscopy. The modified electrode exhibits excellent sensing performance for detecting AA with linear range from 0.05 to 1100 mu M and a detection limit of 0.0167 mu M (S/N = 3). Under optimal conditions, the sensor displays excellent stability and satisfactory results in real samples analysis. (C) 2014 Published by Elsevier Ltd.

引用

页码：336 / 342

页数：7

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