室温有机肼液相还原氧化银溶胶制备纳米银  

Silver Nanoparticles from Hydrazine Reduction of Ag_2O at Room Temperature

作　　者：沈丽真 赖时军 余艺清 肖旺钏[1] 郑可利[1] 赖文忠[1] SHEN Li-zhen;LAI Shi-jun;YU Yi-qing;XIAO Wang-chuan;ZHENG Ke-li;LAI Wen-zhong(School of Resources and Chemical Engineering, Sanming University, Sanming 365004, China)

机构地区：[1]三明学院资源与化工学院,福建三明365004

出　　处：《三明学院学报》2017年第6期45-49,共5页Journal of Sanming University

基　　金：国家级大学生创新创业训练计划项目(201211311016);福建省中青年教师教育科研(杰青)项目(JA14286)

摘　　要：以有机肼(联氨N_2H_4)为还原剂,室温下还原氧化银溶胶制备纳米银微粒。考察了配位剂EDTA和稳定剂柠檬酸三钠的用量对纳米银形貌的影响。用紫外-可见(UV-Vis)吸收光谱、X射线粉末衍射仪(XRD)、透射电子显微镜(TEM)对合成的纳米银进行表征。结果表明:产物主要为三角形银纳米片和少量球形纳米颗粒,平均粒径20 nm,三角形纳米银片边长约为40 nm。柠檬酸根在银晶核不同晶面的选择性吸附及Ag(111)晶面的层错对三角形纳米银片的形成起主要作用,通过改变EDTA和柠檬酸三钠(TSC)的用量可调控纳米银的形貌。Silver nanoparticles were synthesized from Ag2O sols in the presence of hydrazine as reduction agents in room temperature.The influences of sodium citrate on the shape of silver nanoparticles were investigated.The as nanoparticles were characterized by UV-Vis,X-ray diffraction and transmission electron microscope.The results indicate that the main morphology of the nanoparticles is triangle with a few spherical ones.The triangle particles have an average side length40nm and the spherical ones is of average size20nm.Citrate special absorption on the(111)surface determines the formation of triangle shape.The morphology of silver nanoparticles can be controlled by changing the amount of EDTA and sodium citrate.

关 键 词：室温 肼 液相还原法 Ag2O溶胶 制备 纳米银 

分 类 号：TB383.1[一般工业技术—材料科学与工程]