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Sized-controlled Synthesis of Platinum Nanoparticles
Du Yukou*1, Zhao Feng1,2, Zou Cuie1, Yang Ping1, Li Xingchang2, Tang Ji'an*2
1.Department of Chemistry, Suzhou University, Suzhou 215006;2.Key Laboratory of Colloid and Surfaces, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100080
Abstract:
Different size platinum nanoparticles, ranging in size from 1.8-14.1 nm, were prepared by multi-step reduction of H2PtCl6 by hydrogen adsorbed on platinum atoms. Transmission electronic microscopy and X-ray diffraction were used to characterize the nanoparticles. After thirty-two iterations of the reaction, the diameter of platinum nanoparticles increased from 1.8 nm to 14.1 nm. The average iterative increase was approximately 0.4 nm. The size distribution of the nanoparticles was narrow. Synthesis procedures which allow for control of platinum nanoparticle size offer the possibility for the further research into how the sizes of nano-catalysts effect catalytic activity.
Key words:  Hydrogen adsorption and reduction method, Pt nanoparticles, XRD
FundProject:
附件
纳米铂颗粒的控制生长
杜玉扣*1, 赵丰1,2, 邹翠娥1, 杨平1, 李兴长2, 唐季安*2
1.苏州大学化学化工学院,苏州,215006;2.中国科学院化学研究所胶体与界面重点实验室,北京,100080
摘要:
利用吸氢再还原法, 进行逐步还原反应, 合成了一系列大小的铂纳米颗粒; 透射电镜和X光衍射分析表征的结果表明,铂颗粒是逐步长大的, 经过32次生长, 铂颗粒的平均粒径从1.8 nm增加到14.1 nm, 平均增加步长约为0.4 nm, 且粒子均具较好的单分散性.
关键词:  吸氢再还原法, 铂纳米颗粒, X射线衍射法
DOI:10.1088/1674-0068/18/6/1019-1022
分类号: