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摘要
The performance of an amperometric bioelectrode (Cu/CuO/Gox) based on a glucose oxidase membrane immobilized on a Cu surface modified by an electrodeposited CuO film for the detection of glucose is reported. The electrochemical investigation of the modified electrode by cyclic voltammetry shows that the copper oxide promotes an excellent electrocatalytic activity for the reduction of hydrogen peroxide, allowing a large decrease in the reduction overpotential, as well as an important enhancement of the corresponding current. By chronoamperometry, it is possible to detect the glucose at low potentials where are no interferences. The obtained Cu/CuO/Gox bioelectrode shows a fast response (10 s), a linear domain for glucose concentration up to 20 mM glucose (i.e 3.60 g L-1 glucose) and a detection limit of 1.6 mM glucose (0.29 g L-1 glucose).
- 出版日期2013-10
