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Pt/Au/Fe3O4的制备及其电化学性能

洪春艳 ,  李敏 ,  刘家祥

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引用本文: 洪春艳, 李敏, 刘家祥. Pt/Au/Fe3O4的制备及其电化学性能[J]. 燃料化学学报, 2013, 41(9): 1108-1114. shu
Citation:  HONG Chun-yan, LI Min, LIU Jia-xiang. Preparation of Pt/Au/Fe3O4 nanocomposites and their electrocatalytic activities in methanol oxidation[J]. Journal of Fuel Chemistry and Technology, 2013, 41(9): 1108-1114. shu

Pt/Au/Fe3O4的制备及其电化学性能

    通讯作者: 刘家祥, Tel: 010-64446432, Fax: 010-64446432, E-mail: ljxpost@263.net。
摘要: 以制得的纳米Fe3O4颗粒作为载体,用还原法将还原出的Au与Pt分别负载到Fe3O4颗粒表面,制得纳米Pt/Au/Fe3O4复合材料。对Pt/Au/Fe3O4进行紫外可见光吸收光谱、透射电子显微镜、X射线衍射及光电子能谱等物理表征,结果表明,Au与Pt均匀地沉积到了Fe3O4纳米颗粒表面。对纳米Pt/Au/Fe3O4复合材料进行循环伏安扫描,当H2PtCl6的加入量达到8 mL时,Pt/Au/Fe3O4催化性能最佳;正扫电流峰ip与扫描速率的平方根v1/2线性相关,Pt/Au/Fe3O4催化氧化甲醇的过程受扩散控制;对催化剂进行201次循环伏安扫描,催化剂仍然能保持较好的催化性能且稳定性良好。因此,所合成催化剂Pt/Au/Fe3O4是一种具有良好化学稳定性的阳极催化剂材料。

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  • 收稿日期:  2012-12-23
  • 网络出版日期:  2013-04-11
通讯作者: 陈斌, bchen63@163.com
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