【摘要】 以十二烷基硫酸钠(SDS)-聚乙烯吡咯烷酮(PVP)软团簇为模板,水合肼为还原剂还原氯化镍制备纳米镍粉,采用X-射线衍射仪、透射电镜、激光粒度分析仪及差热分析仪等对其进行表征.结果表明:在制备过程中,SDS-PVP团簇具有防止镍粒子团聚的作用;所得镍纳米粒子属立方晶系,平均粒径为16 nm;制备得到的镍粒子的熔点为538.7℃,远低于普通尺寸镍的熔点(1452℃),这与文献报道的镍纳米粒子熔点为524.3℃相近,从而证明了在SDS-PVP模板中制备出镍纳米粒子.更多还原

【Abstract】 Nickel nanoparticles were prepared from nickel chloride by hydrazine reduction using sodium dodecyl sulfate(SDS)-polyvinylpyrrolidone(PVP) as soft template.The nanoparticles were characterized by XRD、TEM、DTA and laser particle size analyzer.Microscopic photograph of nickel particles showed that SDS-PVP clusters can prevent the overgrowth of nickel particles.The XRD results showed that the prepared particles were face centric structural(fcc) and the mean size was 16 nm.The TEM image also showed that nickel particles’ size was in the range of nano-scale.更多还原