Size controllable synthesis of ultrafine silver particles through a one-step reaction
2011
Liu, Tao | Li, Dongsheng | Yang, Deren | Jiang, Minhua
A simple one-step reduction method was explored to synthesize silver particles of different size. During synthesis, Polyvinylpyrrolidone (PVP) and CH₂O were used as the protective agent and the reducing agent, respectively. It is found that the reaction parameters including the concentration of PVP and AgNO₃, the amount of ammonia and the reaction temperature has great influence on the size and uniformity of silver particles. By careful tuning the reaction parameters, mono-disperse silver particles with the size of 40–2000nm can be obtained controllably. It is considered that there were two growth modes: diffusional growth and aggregation.
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