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OALib Journal期刊
ISSN: 2333-9721
费用：99美元
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pt/au/fe3o4的制备及其电化学性能
, PP. 1108-1114
Keywords: pt/au/fe3o4,阳极催化剂,甲醇还原剂,电化学性能
Abstract:
？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8ml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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