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dc.contributor.authorCheng, Ta-Mingen_US
dc.contributor.authorHuang, Ting-Kaien_US
dc.contributor.authorLin, Huang-Kaien_US
dc.contributor.authorTung, Sze-Pingen_US
dc.contributor.authorChen, Yu-Liangen_US
dc.contributor.authorLee, Chi-Youngen_US
dc.contributor.authorChiu, Hsin-Tienen_US
dc.date.accessioned2014-12-08T15:48:14Z-
dc.date.available2014-12-08T15:48:14Z-
dc.date.issued2010-10-01en_US
dc.identifier.issn1944-8244en_US
dc.identifier.urihttp://dx.doi.org/10.1021/am100432aen_US
dc.identifier.urihttp://hdl.handle.net/11536/32150-
dc.description.abstractA straightforward electrochemical deposition process was developed to grow gold nanostructures, including nanocoral, nanothorn, branched belt, and nanoparticle, on carbon electrodes by reducing HAuCl(4) under constant potentials in mixtures containing CTAC and/or NaNO(3). Among the nanostructures, the quasi-one-dimensional nanocoral electrode showed the highest surface area. Because of this, it provided excellent electrochemical performances in cyclic voltammetric (CV) studies for kinetic-controlled enzyme-free glucose oxidation reactions. In amperometric studies carried out at 0.200 V in PBS (pH 7.40, 0.100 M), the nanocoral electrode showed the highest anodic current response. It also offered the greatest sensitivity, 22.6 mu AmM(-1)cm(-2), an extended linear range, 5.00 x 10(-2) mM to 3.00 x 10(1) mM, and a low detection limit, 1.00 x 10(1) mu m among the electrodes investigated in this study. In addition, the glucose oxidation by the nanocoral electrode started at -0.280 V. more negative than the one of using a commercial Au electrode as the working electrode. This is attributed to the presence of exposed Au (110) surfaces on the electrode. The feature was applied to oxidize glucose selectively in the presence of ascorbic acid (AA) and uric acid (UA), common interferences found in physiological analytes. With an applied voltage at -0.100 V. the AA oxidation (started at -0.080 V) can be avoided while the glucose oxidation still provides a significant response.en_US
dc.language.isoen_USen_US
dc.subjectAu nanostrucreen_US
dc.subjectAu (110) planeen_US
dc.subjectselective oxidationen_US
dc.subjectelectrochemical glucose sensoren_US
dc.title(110)-Exposed Gold Nanocoral Electrode as Low Onset Potential Selective Glucose Sensoren_US
dc.typeArticleen_US
dc.identifier.doi10.1021/am100432aen_US
dc.identifier.journalACS APPLIED MATERIALS & INTERFACESen_US
dc.citation.volume2en_US
dc.citation.issue10en_US
dc.citation.spage2773en_US
dc.citation.epage2780en_US
dc.contributor.department應用化學系zh_TW
dc.contributor.departmentDepartment of Applied Chemistryen_US
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