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OALib Journal期刊
ISSN: 2333-9721
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银铜双金属纳米合金的制备和电催化性质
Keywords: 金属材料,电化学沉积,银铜双金属纳米合金,催化性能
Abstract:
？采用电沉积方法制备银铜双金属纳米合金,用x射线衍射仪(xrd)及高分辨率透射电子显微镜(hrtem),扫描电子显微镜(sem)和电化学工作站分别对样品的结构、微观形貌和电催化性质进行了表征。结果表明,银铜双金属纳米合金电极在h2o2溶液中表现出较强的还原电流,可以作为阴极催化剂;随着银铜双金属纳米合金沉积电位的变负,阴极催化作用减弱,形貌由穗状晶向树枝晶转变;随着铜离子浓度的提高,阴极催化作用增强,银铜双金属纳米合金的形貌由树枝晶向棒状晶转变。这意味着,本文观察到了银铜双金属纳米合金的双金属电催化协同效应。
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