在十二烷基硫酸钠(SDS)溶液中,用柠檬酸(CA)还原硝酸银合成梭形银纳米粒子.紫外-可见光谱(Uv-vis)和透射电镜(TEM)实验结果表明,在固定SDS/CA质量比为50:50条件下,所制备的银粒子两头尖,中间宽,呈梭形结构.梭形银粒子的形成主要是SDS在不同晶面的吸附使得晶面的生长速率不同所致.SDS在梭形银粒子的形成过程中不是起模板作用,而是作为吸附剂和分散剂.
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