Non-enzymatic Glucose Biosensor Based on Cu/SWNTs Composite Film Fabricated by One-step Electrodeposition

Chemical Research in Chinese Universities ›› 2011, Vol. 27 ›› Issue (6): 1049-1054.

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Non-enzymatic Glucose Biosensor Based on Cu/SWNTs Composite Film Fabricated by One-step Electrodeposition

SUN Fang^1,2, LIU Peng³, LI Li¹ and LIAN Yong-fu^1*

1. Key Laboratory of Functional Inorganic Material Chemistry, Heilongjiang University, Harbin 150080, P. R. China;
2. Department of Physics, Mudanjiang Normal College, Mudanjiang 157012, P. R. China;
3. College of Life Sciences and Technology, Harbin Normal University, Harbin 150025, P. R. China

Received:2010-12-30 Revised:2011-03-25 Online:2011-11-25 Published:2011-11-07
Contact: LIAN Yong-fu E-mail:chyflian@163.com
Supported by:
Supported by the National Natural Science Foundation of China(No.51072047).

Abstract

Abstract: Based on the adsorption of copper ions on single-walled carbon nanotubes(SWNTs) in electrolyte, Cu/SWNTs nanocomposite film was initially prepared on indium-doped tin oxide(ITO) substrate by one-step electrodeposition. This method may provide a versatile and facile pathway to fabricate other SWNTs-supported metal composite films. Electrochemical experiments revealed that the obtained Cu/SWNTs/ITO electrode offered an excellent electrocatalytic activity towards the oxidation of glucose and could be applied to the construction of non-enzymatic glucose biosensor. The linear range of the sensor was 1.0×10–6 to 6.0×10–4 mol/L and the response time was within 2 s. Particularly, its sensitivity reached as high as 1434.67 μA·L·mmol–1·cm–2, which was superior to any other non-enzymatic glucose biosensor based on copper-carbon nanotubes electrode reported previously.

Key words: Carbon nanotube, Copper, Nanocomposite film, Glucose biosensor

SUN Fang, LIU Peng, LI Li and LIAN Yong-fu*. Non-enzymatic Glucose Biosensor Based on Cu/SWNTs Composite Film Fabricated by One-step Electrodeposition[J]. Chemical Research in Chinese Universities, 2011, 27(6): 1049-1054.

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Non-enzymatic Glucose Biosensor Based on Cu/SWNTs Composite Film Fabricated by One-step Electrodeposition

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