高等学校化学学报 ›› 2004, Vol. 25 ›› Issue (12): 2384.

• 研究简报 • 上一篇    下一篇

保护剂对K2PtCl6为前体合成纳米铂形状的影响

于迎涛, 徐柏庆   

  1. 清华大学化学系有机光电子与分子工程教育部重点实验室, 分子催化与定向转化研究室, 北京100084
  • 收稿日期:2003-12-24 出版日期:2004-12-24 发布日期:2004-12-24
  • 基金资助:

    国家重点基础研究发展规划项目(批准号:G2000026408);国家杰出青年基金(批准号:20125310)资助

Impact of Protector Molecules on the Shape of Pt Nanocrystals Synthesized with K2PtCl6 as the Precursor

YU Ying-Tao, XU Bo-Qing   

  1. Innovative Catalysis Program, Key Lab of Organic Optoelectronics & Molecular Engineering of Ministry of Education Department of Chemistry, Tsinghua University, Beijing 100084, China
  • Received:2003-12-24 Online:2004-12-24 Published:2004-12-24

关键词: 纳米铂粒子的形状, 四面体, 保护剂, 聚乙烯吡咯烷酮

Abstract: The effect of protector molecules on the formation of tetrahedral Pt nanocrystals during the H2 reduction of aqueous K2PtCl6 solution was investigated. It was shown that the addition of sodium lactate or gluconate, which were good protectors for the synthesis of tetrahedral Ni nanocrystals, cannot result in the formation of tetrahedral Pt nanocrystals. On the other hand, the use of polyvinylpyrrolidone(PVP) for the protector has lead to fairly high selectivity(78%-83%) for the tetrahedral shape of Pt nanocrystals. Raman spectral results indicate that there is an interaction between the C=O group of PVP and the surface of tetrahedral Pt nanocrystals. Such an interaction could be important in inducing the formation of tetrahedral Pt nanocrystals.

Key words: Shape of Pt nanocrystals, Tetrahedral, Protector molecule, Polyvinylpyrrolidone

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