Synthesis and characterization of novel Au(core)-Au/Pt alloy(shell) nanostructure

Ru Shi Liu*, Hau Ming Chen, Shu Fen Hu


研究成果: 雜誌貢獻會議論文同行評審

1 引文 斯高帕斯(Scopus)


A systematic study is reported about the amount-dependent morphology change in a series of Au-Pt bimetallic nanoparticles synthesized using chemical reduction. The amount of Au precursor is kept constant throughout whole series of compounds to obtain fixed Au core size (∼7.5 nm). The Au/Pt ratio is varied from 1/1 to 1/4 in order to synthesize Pt shell layer of different thickness. We observed a remarkable shift of surface plasmon band around 410 nm. With the aid of high resolution transmission electron microscope (HRTEM) and energy-dispersive spectrometer (EDS), the composition of shell layer is found to be Pt enriched Au-Pt alloy. As the amount of Pt increases, the Pt clusters formed a string-like shape on the surface of nanoparticles. The average diameter of these Pt clusters is about 2 nm. This special structure may exhibit unique catalytic property.

頁(從 - 到)163-168
期刊Materials Research Society Symposium Proceedings
出版狀態已發佈 - 2004
事件Nanoparticles and Nanowire Building Blocks - Synthesis, Processing, Characterization and Theory - San Francisco, CA, 美国
持續時間: 2004 4月 132004 4月 16

ASJC Scopus subject areas

  • 材料科學(全部)
  • 凝聚態物理學
  • 材料力學
  • 機械工業


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