【摘 要】
：
Superfine and well-dispersed silver power was prepared by the reduction of Ag(NH3)2+ with aacorbic acid in the presence of poly-(vinylpyrrolidone) (PVP) and
【机 构】
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Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing 100084, P.R.China
【出 处】
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第五届国际湿法冶金学术会议(5th International Conference on Hydrometallurg
论文部分内容阅读
Superfine and well-dispersed silver power was prepared by the reduction of Ag(NH3)2+ with aacorbic acid in the presence of poly-(vinylpyrrolidone) (PVP) and triethanolamine (TEA).The influence of PVP, TEA, concentration of silver nitrate (AgNO3) , temperature on size and morphology of silver particles were investigated.The results shows that ultra-fine and well-dispersed silver powder can be prepared at room temperature when the mass ratio of PVP, TEA and ascorbic acid to silver nitrate was eaual to 1∶1, 3∶1, 2∶1, respectively.The silver nanoparticles obtained were characterized on scanning electron microscopy(SEM), X-ray diffraction(XRD), ultraviolet-visible spectroscopy(UV-Vis), thermo-gravimetric analysis(TGA), etc.
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