期刊
CHEMPHYSCHEM
卷 10, 期 2, 页码 436-441出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/cphc.200800538
关键词
biosensors; electrochemistry; gold; nanostructures; template synthesis
资金
- Australian Research Council [DP0773160]
- Australian Research Council for the Australian Research Fellowship
- Australian Research Council [DP0773160] Funding Source: Australian Research Council
We report the fabrication of porous gold nonowire arrays by means of a one-step electrodeposition method utilizing nanochannel alumina templates. The microstructure of gold nanowires depends strongly on the current density. The formation of porous gold nanowires is attributed to disperse crystallization under conditions of low nucleation rate. Interfacial electron transport through the porous gold nonowires is studied by electrochemical impedance spectroscopy. Cyclic voltammetric studies on the porous gold nanowire arrays reveal a low-potential electrocatalytic response towards hydrogen peroxide. The properties of the glucose oxidase modified porous gold nanowire array electrode are elucidated and compared with those of nonporous enzyme electrodes. The glucose oxidase modified porous gold nanowire-array electrode is shown to be an excellent electrochemical biosensor for the detection of glucose.
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