| Development and Evaluation of Gold 3D Cylindrical Nanoelectrode Ensembles |
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| 作者姓名： | 曹立新 闫培生 孙克宁 KIRK W Donald |
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| 作者单位： | [1]Department of Applied Chemistry, Harbin Institute of Technology, Harbin, Heilongjiang 150001, China [2]Department of Bioengineering, Harbin Institute of Technology, Weihai Campus, Weihai, Shandong 264209, China [3]Department of Chemical Engineering and Applied Chemistry, University of Toronto, Toronto, Ontario M5S 3E5, Canada |
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| 基金项目： | Project supported by the Weihai Science Research Plan.Acknowledgments Help form Department of Chemical Engineering and Applied Chemistry, University of Toronto is gratefully acknowledged here. |
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| 摘 要： | Gold 3D cylindrical nanoelectrode ensembles （NEEs）, 100 nm in diameter and 500 nm in length were prepared by electroless template synthesis in polycarbonate filter membranes, followed by selective controlled chemical etching. The morphology of the nanowires and cylindrical NEEs was imaged by scanning electron microscopy. The protruding nanoelectrodes were in good parallel order. EDX study showed that the nanoelectrode elements consisted of pure gold. The electrochemical evaluation of the 3D electrodes was conducted using the well known Fe（CN）6]^3-/Fe（CN）6]^4- couple. Cyclic voltammgrams （CV） show a very low double layer charging current and a higher ratio of signal to background current than 2D disc NEEs. Electrochemical impedance spectroscopy （EIS） indicates that the 3D cylindrical NEEs effectively accelerate the charge transfer process, which is in consistent with the results of CV. The linear relationship with a slope of 0.5 between lg Ipc and lg v shows that linear diffusion is dominant on the 3D cylindrical NEEs at conventional scan rates.
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| 关 键 词： | 纳米电子颗粒 模板合成 化学浸蚀 电气化学 |
| 修稿时间： | 2007-03-28 |
Development and Evaluation of Gold 3D Cylindrical Nanoelectrode Ensembles |
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| CAO, Li-Xin YAN, Pei-Sheng SUN, Ke-Ning KIRK, W Donald.Development and Evaluation of Gold 3D Cylindrical Nanoelectrode Ensembles[J].Chinese Journal of Chemistry,2007,25(11):1754-1757. |
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| Authors: | CAO Li-Xin YAN Pei-Sheng SUN Ke-Ning KIRK W Donald |
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| Institution: | 1 Department of Applied Chemistry, Harbin Institute of Technology, Harbin, Heilongjiang 150001, China ;2 Department of Bioengineering, Harbin Institute of Technology, Weihai Campus, Weihai, Shandong 264209, China ;3 Department of Chemical Engineering and Applied Chemistry, University of Toronto, Toronto, Ontario M5S 3E5, Canada |
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| Abstract: | Gold 3D cylindrical nanoelectrode ensembles (NEEs), 100 nm in diameter and 500 nm in length were prepared by electroless template synthesis in polycarbonate filter membranes, followed by selective controlled chemical etching. The morphology of the nanowires and cylindrical NEEs was imaged by scanning electron microscopy. The protruding nanoelectrodes were in good parallel order. EDX study showed that the nanoelectrode elements consisted of pure gold. The electrochemical evaluation of the 3D electrodes was conducted using the well known Fe(CN)6]3?/Fe(CN)6]4? couple. Cyclic voltammgrams (CV) show a very low double layer charging current and a higher ratio of signal to background current than 2D disc NEEs. Electrochemical impedance spectroscopy (EIS) indicates that the 3D cylindrical NEEs effectively accelerate the charge transfer process, which is in consistent with the results of CV. The linear relationship with a slope of 0.5 between lg Ipc and lg v shows that linear diffusion is dominant on the 3D cylindrical NEEs at conventional scan rates. |
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| Keywords: | cylindrical nanoelectrode emsembles template synthesis chemical etching cylclic voltammetry electrochemical impedance spectroscopy |
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