Issue 24, 2011
From the journal:

Analyst

Porous Cu–NiO modified glass carbon electrode enhanced nonenzymatic glucose electrochemical sensors†

Xiaojun Zhang,*a   Aixia Gu,a   Guangfeng Wang,ab   Yan Huang,a   Huiqing Jia  and  Bin Fang*a  

* Corresponding authors

a College of Chemistry and Materials Science, Anhui Key Laboratory of Functional Molecular Solids, Anhui Key Laboratory of Chem–Biosensing, Anhui Normal University, Wuhu, P R China
E-mail: zhangxiaojun173@yahoo.com.cn
Fax: +86-553-3869303
Tel: +86-553-3869303

b Anhui Key Laboratory of Controllable Chemistry Reaction & Material Chemical Engineering, HeFei University of Technology, Hefei, P R China

Abstract

Porous Cu–NiO nanocomposites were successfully prepared by calcination of the Cu–Ni(OH)2 precursor at 400 °C for 2 h. During the process of calcination, Ar was used to deaerate O2. The structure and morphology of Cu–NiO were characterized by X-ray diffraction spectrum (XRD), energy dispersive X-ray analyses (EDX), transmission electron microscopy (TEM), and scanning electron microscopy (SEM). Using porous Cu–NiO nanocomposites, a simple non-enzymatic amperometric sensor has been fabricated (Cu–NiO/GCE) and evaluated by electrochemical impedance spectroscopy (EIS), cyclic voltammetry (CV) and typical amperometric method. When applied to detect glucose by the amperometric method, Cu–NiO/GCE produced an ultrahigh sensitivity of 171.8 μA mM−1, with a low detection limit of 0.5 μM (S/N = 3). What's more, interference from common co-existing species, such as UA, AA, and fructose can be avoided at the sensor. Results in this study imply that porous Cu–NiO nanocomposites are promising nanomaterials for the enzyme-free determination of glucose.

Graphical abstract: Porous Cu–NiO modified glass carbon electrode enhanced nonenzymatic glucose electrochemical sensors

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Supplementary files

Article information

DOI
https://doi.org/10.1039/C1AN15784A
Article type
Paper
Submitted
28 Aug 2011
Accepted
29 Sep 2011
First published
26 Oct 2011

Analyst, 2011,136, 5175-5180

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Porous Cu–NiO modified glass carbon electrode enhanced nonenzymatic glucose electrochemical sensors

X. Zhang, A. Gu, G. Wang, Y. Huang, H. Ji and B. Fang, Analyst, 2011, 136, 5175 DOI: 10.1039/C1AN15784A

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