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n-TiO2陰極電沉積納米金屬鉑及其電化學(xué)特性
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TQ153.6

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上海教育委員會青年基金（203170）


The Preparation and Characterization of Nanocrystalline Pt Films of Titanium Dioxide by Cathodic Electrodeposition
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    摘要:

    用兩步法對鈦基材進行陽極氧化，然后用陰極電沉積方法制備出納米級鉑鍍層Ti／TiO2．Pt陽極，用場發(fā)射電子掃描顯微鏡（SE-SEM）分析了Pt沉積前后的表面形貌，并測試了其晶粒度。結(jié)果表明，Pt晶粒度大小為80nm～130nm，陽極不僅具有與鉑陽極相似的電化學(xué)行為特征，而且通過Pt摻雜明顯改善月．TiO2電極的電催化活性，并隨著沉積Pt時間的增加，其電催化活性提高。

    Abstract:

    A two-step procedure was used for the preparation of the modified Ti/TiO2-Pt electrodes. The first step was anodisation of the titanium substrate to produce oxide film, and the second step was cathodic deposition Pt. The Ti/TiO2-Pt electrodes with nanocrystalline Pt films were obtained by galvanostatic deposit from H2PtCl4 and HCl solutions containing organic at 298 K~343 K. The mean grain sizes of Pt particles were 80 nm~130 nm. The surfaces of the as-prepared anodes before and after Pt coating were investigated by field emission scanning electron microscope scanning (FE-SEM) and X-ray diffraction (XRD). The parameters such as temperature and pH were discussed. The results show that the catalytic activity of n-TiO2 is remarkably improved by Pt doping and will increase further with prolonging of Pt deposition time.

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姚書典 沈嘉年 孫娟. n-TiO2陰極電沉積納米金屬鉑及其電化學(xué)特性[J].稀有金屬材料與工程,2006,35(10):1625~1628.[Yao Shudian, Shen Jiannian, Sun Juan. The Preparation and Characterization of Nanocrystalline Pt Films of Titanium Dioxide by Cathodic Electrodeposition[J]. Rare Metal Materials and Engineering,2006,35(10):1625~1628.]
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  • 收稿日期:2005-08-18
  • 最后修改日期:2006-03-21
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