PVP辅助制备单分散纳米银颗粒研究  

Preparation of Monodisperse Superfine Silver Powder

作　　者：司华艳[1,2] 毛晨憬 谢雅萌 常建辉[1] 卢亚妹 SI Hua-yan;MAO Chen-jing;XIE Ya-meng;CHANG Jian-hui;LU Ya-mei(School of Materials Science & Engineering,Shijiazhuang Tiedao University, Shijiazhuang, Hebei 050043, China;Hebei Provincial Key Laboratory of Traffic Engineering Materials, Shijiazhuang Tiedao University, Shijiazhuang, Hebei 050043, China)

机构地区：[1]石家庄铁道大学,材料科学与工程学院,河北石家庄050043 [2]石家庄铁道大学,河北省交通工程材料重点实验室,河北石家庄050043

出　　处：《石家庄学院学报》2017年第3期5-10,21,共7页Journal of Shijiazhuang University

基　　金：河北省高等学校科学技术研究青年项目(QN2015220);河北省留学回国基金(C2013001055);2016年省级大学生创新创业项目;河北省高校重点学科建设项目

摘　　要：为了可控制备超细银粉,采用水热法,以乙二醇为溶剂和还原剂,聚乙烯吡咯烷酮(PVP)为保护剂和分散剂,制备出了尺寸均匀分布、分散性良好的纳米银颗粒,并对其进行了扫描电镜(SEM)以及紫外可见吸收光谱(UV-vis)测试.结果表明:在高的硝酸银浓度下,容易得到粒径较大的纳米银颗粒,而一直增大PVP与硝酸银的比例并不能使纳米银颗粒的尺寸持续减小.PVP在该反应体系中不仅起到分散剂的作用,而且还能促进乙二醇还原银离子.For controlling the monodisperse superfine silver powder,ethylene glycol as reducing agent andsolvent,PVP as surfactant,uniform size distribution,good dispersion and highly purified silver nanoparticles aresynthesized by using hydrothermal method.It is found that,with increasing the concentration of AgNO3,the size ofnano-particles increases;however,the concentration of silver nitrate has a critical value,after that,the obtained sizedoes not increase.In this work,PVP plays dual roles as both dispersant and assistant reducing agent.

关 键 词：纳米银 水热法 聚乙烯吡咯烷酮 

分 类 号：O614[理学—无机化学]