高等学校化学研究 ›› 2011, Vol. 27 ›› Issue (6): 1049-1054.
SUN Fang1,2, LIU Peng3, LI Li1 and LIAN Yong-fu1*
SUN Fang1,2, LIU Peng3, LI Li1 and LIAN Yong-fu1*
摘要: 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.