Article ID Journal Published Year Pages File Type
868299 Biosensors and Bioelectronics 2009 6 Pages PDF
Abstract

Highly ordered Ni nanowire arrays (NiNWAs) were synthesized for the first time using a template-directed electropolymerization strategy with a nanopore polycarbonate (PC) membrane template, and their morphological characterization were examined by scanning electron microscopy (SEM) and transmission electron microscope (TEM). A NiNWAs based electrode shows very high electrochemical activity for electrocatalytic oxidation of glucose in alkaline medium, which has been utilized as the basis of the fabrication of a nonenzymatic biosensor for electrochemical detection of glucose. The biosensor can be applied to the quantification of glucose with a linear range covering from 5.0 × 10−7 to 7.0 × 10−3 M, a high sensitivity of 1043 μA mM−1 cm−2, and a low detection limit of 1 × 10−7 M. The experiment results also showed that the sensor exhibits good reproducibility and long-term stability, as well as high selectivity with no interference from other oxidable species.

Related Topics
Physical Sciences and Engineering Chemistry Analytical Chemistry
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