硫酸-硫酸亚铁体系制备高分散球形银粉
Preparation of highly dispersed spherical silver powder with H2SO4-FeSO4 system
姚远 1李玮 1李晨昊 1张晓杰 1李江辉 1姚志强 1黄富春1
作者信息
- 1. 贵研电子材料(云南)有限公司,昆明 650503
- 折叠
摘要
以AgNO3作为银源,FeSO4作为还原剂,H2SO4作为稳定剂,通过一步还原法制备球形银粉.研究了还原剂用量、稳定剂用量及操作方式对银粉形貌的影响.结果表明,对2.5g AgNO3,当FeSO4用量在11g,0.1 mol/LH2SO4用量在0.1g时,向AgNO3-H2SO4溶液中快速加入FeSO4溶液,制备所得银粉形貌均一,粒径分布范围窄,形貌为形状规则球形银粉,分散性好.对反应体系中的吸附反应机理进行分析,发现SO42-及Fe2+浓度对银颗粒形貌有明显的影响.
Abstract
Spherical silver powder was synthesized using a one-step reduction method,employing AgNO3 as the silver precursor,FeSO4 as the reducing agent,and H2SO4 as the stabilizing agent.The influence of varying amounts of reducing agent,stabilizer,and operational modes on the morphology of the silver powder was investigated.The results indicate that for 2.5 g of AgNO3,when 11 g of FeSO4 and 0.1 g of 0.1 mol/L H2SO4 are utilized,rapid addition of the FeSO4 solution to the AgNO3-H2SO4 mixture yields silver powder with a uniform morphology,narrow particle size distribution range,and well-defined spherical shape exhibiting excellent dispersion properties.Additionally,an analysis of the adsorption mechanism within the reaction system revealed that concentrations of SO42-and Fe2+significantly affect the morphology of silver particles.
关键词
球形银粉/AgNO3/FeSO4/H2SO4Key words
spherical silver powder/AgNO3/FeSO4/H2SO4引用本文复制引用
基金项目
重大科技专项-光伏用电子浆料及基础材料的研发公关项目(YPML-2023050206)
出版年
2024
NETL
NSTL
万方数据