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Preparation of silver nanoparticles via a non-template method
Authors:Ke Shao  Jian-nian Yao
Affiliation:aDepartment of Chemistry, Normal College, Shenzhen University, Guangdong Province 518060, China;bCenter for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100080, China
Abstract:Silver nanoparticles have been prepared by a non-template method. Silver nitrate can be easily decomposed into silver nanosized materials. Small nanoparticles (less than 2 nm) can be formed in aqueous solution. Larger silver particles of about 100 nm can be formed in ethanol solution. By rationally adjusting the experimental conditions we finally obtain silver particles of about 20 nm with a relatively narrow distribution in ethanol solution. Differing from the previous reports, we find that silver nanoparticles can be formed by direct decomposition of AgNO3 under UV light irradiation. No catalyst like TiO2 is needed at all. We believe that it is a further step to precede the preparation of silver nanometer sized materials.
Keywords:Nanomaterials  Crystal growth  Optical materials  Properties
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