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李芝华,王炎伟,于倩倩.正交设计优化纳米银粉制备的研究[J].稀有金属材料与工程(英文),2009,38(2):327~330.[Li Zhihua,Wang Yanwei,Yu Qianqian.Synthesis of Nanosized Silver Powder by Orthogonal Design[J].Rare Metal Materials and Engineering,2009,38(2):327~330.]
Synthesis of Nanosized Silver Powder by Orthogonal Design
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Received:January 23, 2008  
Key words: nanosized silver powder  chemical reduction  orthogonal design
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Author NameAffiliation
Li Zhihua Central South University, Changsha 410083, China 
Wang Yanwei  
Yu Qianqian  
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      Using sodium hypophosphite as the reducing agent, polyvinyl pyrrolidone as the protecting agent, the nanosized silver powder was synthesized by chemical reduction method in a highly concentrated silver nitrate solution. Using the orthogonal design method of three factors and three levels, the optimal conditions to prepare the nanosized silver powder were obtained by studying the effects of following factors, such as the concentration of reducing agent, the doses of protecting agent and the temperature, on the particles size and morphology of silver powder. The pure nanosized silver powders with qusai-spherical shapes and homogeneous distribution and diameter of 30 nm to 50 nm were synthesized under the conditions of AgNO3 concentration of 1.0 mol/L, NaH2PO2·H2O concentration of 0.1 mol/L, PVP/AgNO3 weight ratio of 1∶1, pH=1~2 and at 40 ℃