Addition of porous cuprous oxide to a Nafion film strongly improves the performance of a nonenzymatic glucose sensor

作者：Zhang, Li; Ni, Yonghong^*; Li, Hua

来源：Microchimica Acta, 2010, 171(1-2): 103-108.

DOI：10.1007/s00604-010-0415-0

• Electrocatalytic oxidation
• Glucose
• Porous Cu(2)O microcubes
• Alkaline medium
• Amperometric sensor

The direct electrocatalytic oxidation of glucose in alkaline medium at an electrode modified with microcubes of porous cuprous oxide is reported. Compared to the glassy carbon electrode, a substantial increase in the efficiency of the electrocatalytic oxidation of glucose is observed starting at around +0.20 V (vs. Ag/AgCl). The pH dependence of the response was examined by cyclic voltammetry. This non-enzymatic amperometric sensor may be used for non-enzymatic detection of glucose with a high and reproducible sensitivity of 10.95 mu A per mM at a potential of +0.40 V, with response times of < 3 s, a linear range from 2.0 to 350 mu M, and a detection limit of 1.3 mu M. The porous microcubes are conveniently prepared, and display high sensitivity and repeatability.

• 出版日期2010-10
• 单位安徽师范大学