通过对纳米银的制备和结构表征,研究贵金属纳米材料的制备方法和纳米结构.采用硝酸银和锌反应置换银纳米粒子.与传统化学还原法相比,工艺简单,无需添加保护剂和活性剂.采用光学显微镜、XRD、SEM、TEM、SAED等手段,表征纳米材料的尺寸、形貌、组成和晶体结构.结果表明,反应所得的产物为银枝品结构,面心立方品体.每个银枝晶都由主干、二次分枝、三次分枝组成,具有自相似性.
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