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Rapid nonenzymatic monitoring of glucose and fructose using a CuO/multiwalled carbon nanotube nanocomposite-modified glassy carbon electrode

Authors
Hajar Shekarchizadeh, Mahdi KADIVAR, Ali A Ensafi
 
Journal name
Chinese Journal of Catalysis
Volume
34
Issue
6
Pages
1208-1215

Abstract

A nonenzymatic electrochemical sensor for glucose and fructose was fabricated that contained a glassy carbon electrode modified with a copper oxide (CuO)/multiwalled carbon nanotube (MWCNT) nanocomposite. The electrochemical properties of the CuO/MWCNT-modified glassy carbon electrode were investigated. Two distinguishable anodic peaks were observed around 0.30 and 0.44 V corresponding to the oxidation of glucose and fructose, respectively, at the surface of the modified electrode. The detection limits for glucose and fructose were both 0.04 mmol/L. The sensor was used to simultaneously determine the concentrations of glucose and fructose in hydrolyzed sucrose samples, and to measure glucose in blood serum samples, demonstrating its potential as a nonenzymatic carbohydrate sensor.

 

Graphical abstract

A glassy carbon electrode modified with the CuO/MWCNT nanocomposite with excellent synergistic effect, good reproducibility, and strong stability as well as quick response was fabricated as a non-enzymatic electrochemical sensor for the simultaneous determination of glucose and fructose.

 

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Journal Papers
Month/Season: 
June
Year: 
2013