Carbon-decorated ZnO nanowire array: A novel platform for direct electrochemistry of enzymes and biosensing applications |
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| Authors: | Jinping Liu Chunxian Guo Chang Ming Li Yuanyuan Li Qingbo Chi Xintang Huang Lei Liao Ting Yu |
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| Affiliation: | 1. School of Chemical and Biomedical Engineering, Center for Advanced Bionanosystems, Nanyang Technological University, Nanyang Avenue, 70 Nanyang Dr., Singapore 637457, Singapore;2. Center for Nanoscience and Nanotechnology, Department of Physics, Central China Normal University, Wuhan 430079, Hubei, PR China;3. Division of Physics and Applied Physics, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore |
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| Abstract: | We report here the direct electron transfer of GOD and a novel glucose biosensor based on carbon-decorated ZnO(C–ZnO) nanowire array electrode. The C–ZnO nanowire array provides a novel platform for fast direct electrochemistry of GOD, and its based biosensor shows very high sensitivity and low detection limit. Based on the direct electrochemistry of horseradish peroxidase (HRP), the H2O2 biosensing application is further demonstrated using this new C–ZnO array architecture. The high conductivity of carbon and good electron transfer capability of ZnO nanowires, along with their low cost and biocompatibility make the C–ZnO nanowire array a promising platform for direct electrochemistry of enzymes and mediator-free enzymatic biosensors. |
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