中国粉体技术2016，Vol.22Issue(5)：73-77,5.DOI:10.13732/j.issn.1008-5548.2016.05.016
工艺参数对液相还原法制备超细银粉形貌特征的影响
Effect of preparation parameters on morphology of silver powders by liquid phase reduction method
摘要
Abstract
Effect of the concentration of AgNO3 and ascorbic acid,the temperature and pH of reaction system,the type and dosage of addition agent on the morphology of ultrafine silver powders by liquid phase reduction method were explored.Particles were characterized and analyzed with SEM,particle size analyzer,surface area analyzer and particle image analyzer.It shows that pH value is a significant factor affecting the particle size,morphology and dispersion simultaneously,while the dosage of addition agent and ascorbic acid concentration are significant factors affecting particle morphology and dispersion respectively.As the pH value gradually increased from 2 to 10,particles presented shape change by irregular polyhedron,rod-shaped to spherical,and average particle size gradually decrease.As the dosage of addition agent increase,particles present shape change by irregular to spherical,spiky ball,and the sphericity of particles is the greatest when the dosage was 2.5％.With increasing ascorbic acid concentration,the dispersion of particles become worse,and particles are at best dispersion when it is 0.5 mol/L.关键词
超细银粉/液相还原法/工艺参数/形貌特征Key words
ultrafine silver powders/liquid reduction method/process parameters/morphology分类
化学化工引用本文复制引用
黄灿,袁鸽成,邓南林,卢小东,许福太..工艺参数对液相还原法制备超细银粉形貌特征的影响[J].中国粉体技术,2016,22(5):73-77,5.基金项目
广东省科技计划项目,编号:2006B14701003 （）
广州市科技计划项目,编号:201510010034. （）
