柠檬酸盐保护下光化学一步法合成Au核-Pt壳纳米粒子及其表征研究  

Study on Photochemical One-step Synthesis and Characterization of Au Core/Pt Shell Nanoparticles under the Protection of Citrate

作　　者：赵恩格[1] 张正富[1] 董颖男[2] 

机构地区：[1]昆明理工大学,云南昆明650091 [2]昆明贵金属研究所,云南昆明650106

出　　处：《云南化工》2010年第3期6-8,共3页Yunnan Chemical Technology

基　　金：国家自然科学基金项目(20863003)

摘　　要：柠檬酸钠做保护剂,光化学同时还原Au（Ⅲ）与Pt（Ⅳ）离子混合物合成Au核Pt壳纳米粒子。应用XPS、UV-V is、TEM等分析手段研究了Au-Pt纳米粒子的结构、形貌、化学状态等。结果表明：所合成的双金属纳米粒子为球形,具有Au核-Pt壳复合结构,平均粒径范围为8.1~5.1 nm。The Au/Pt core-shell nanoparticles were synthesized by photochemical simultaneous reduction of Au（Ⅲ） and Pt（Ⅳ） ions in the presence of sodium citrate as protect agent.The structure,morphology,chemical state and so on of the AuPt nanoparticles were characterized using XPS,UV-Vis and TEM.It was shown that the AuPt nanoparticles were spherical and had composite structure with Au core/Pt shell.The bimetallic nanoparticles sizes obtained are between 8.1~5.1nm.

关 键 词：柠檬酸盐 光化学 一步法 Au核Pt壳 表征 

分 类 号：O644.14[理学—物理化学]