以两高纯银片作电极,以去离子水为电解液,PVP作为辅助电解质和稳定剂,通过电解法制备了高纯纳米银溶胶.探讨了PVP含量、电解时间、电流密度对形成的纳米银溶胶的影响.结果表明:当PVP质量分数为5％、电解150 min、电流密度为1～2 mA/cm2时,所得球形银粒子的粒径1～3 nm、单分散,浓度达130 μg/g,而且有极好的存放稳定性,室温避光存放6个月无任何可见的变化.
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