摘要
The effect of protector molecules on the formation of tetrahedral Pt nanocrystals during the H 2 reduction of aqueous K 2PtCl 6 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 CO group of PVP and the surface of tetrahedral Pt nanocrystals. Such an interaction could be important in inducing the formation of tetrahedral Pt nanocrystals.
The effect of protector molecules on the formation of tetrahedral Pt nanocrystals during the H 2 reduction of aqueous K 2PtCl 6 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 CO group of PVP and the surface of tetrahedral Pt nanocrystals. Such an interaction could be important in inducing the formation of tetrahedral Pt nanocrystals.
出处
《高等学校化学学报》
SCIE
EI
CAS
CSCD
北大核心
2004年第12期2384-2386,共3页
Chemical Journal of Chinese Universities
基金
国家重点基础研究发展规划项目 (批准号 :G2 0 0 0 0 2 64 0 8)
国家杰出青年基金 (批准号 :2 0 12 5 3 10 )资助
关键词
纳米铂粒子的形状
四面体
保护剂
聚乙烯吡咯烷酮
Shape of Pt nanocrystals
Tetrahedral
Protector molecule
Polyvinylpyrrolidone
