原料加入顺序对制备Cu/Ag纳米粒子的影响  

Effect of Adding Order for Raw Material on Synthesis of Cu/Ag Nanoparticles

作　　者：庄严[1] 王琪[1] 周全法[1] 

机构地区：[1]江苏技术师范学院化学与环境工程学院

出　　处：《光谱实验室》2011年第3期1016-1020,共5页Chinese Journal of Spectroscopy Laboratory

基　　金：国家科技支撑计划项目(2008BAC4B04)

摘　　要：以硫酸铜为原料制备纳米级铜粉,再用化学还原法沉积生长Ag包覆层,制备Cu/Ag复合纳米粒子,使用紫外吸收光谱法监测反应过程。结果表明,加料方式对Cu粒子的粒径会产生影响,向水合肼中滴加聚乙烯吡咯烷铜与硫酸铜的混合液能制得粒径均匀的铜纳米粒子。同时,使用向聚乙烯吡咯烷铜与硫酸铜的混合液中滴加水合肼方法制得Cu2O继而得到铜纳米粒子,能制备出稳定的Cu/Ag复合纳米粒子。Nano-copper was synthesized by copper sulfate,and Cu/Ag nanoparticles were prepared by deposition of Ag through chemical reduction,then the process of reaction was monitored by UV absorption spectroscopy.The order of adding raw materials had impact on the size of Cu nanoparticles.Uniform Nano-copper is synthesized easily by dropping mixture of polyvinylpyrrolidone and copper sulfate to hydrazine hydrate.Stable Cu/Ag nanoparticles can be prepared by dropping hydrazine hydrate to mixture of polyvinylpyrrolidone and copper sulfate.

关 键 词：Cu/Ag纳米粒子 紫外吸收光谱 水合肼 硫酸铜 

分 类 号：O657.32[理学—分析化学]