Morphology and surface plasma changes of Au-Pt bimetallic nanoparticles

Hao Ming Chen, Hsin Chieh Peng, Ru Shi Liu*, Shu Fen Hu, Hwo Shuenn Sheu

*此作品的通信作者

研究成果: 雜誌貢獻期刊論文同行評審

7 引文 斯高帕斯(Scopus)

摘要

In this study, we examined the amount-dependent change in morphology in a series of Au-Pt bimetallic nanoparticles synthesized using chemical reduction. The amount of Au precursor was kept constant throughout the experiment. The Au/Pt molar ratio was varied from 1/1 to 1/4 to synthesize Pt shell layers with different thicknesses. We observed a remarkable shift of the surface plasmon band at around 410 nm. By high-resolution transmission electron microscopy (HRTEM) and energy-dispersive spectrometry (EDS), the composition of the shell layer was found to be Pt-enriched Au-Pt alloy. As the concentration of Pt increases, Pt clusters (ca. 1.8 nm in diameter) form a string-like shape on the surface of nanoparticles.

原文英語
頁(從 - 到)1411-1415
頁數5
期刊Journal of Nanoscience and Nanotechnology
6
發行號5
DOIs
出版狀態已發佈 - 2006 5月
對外發佈

ASJC Scopus subject areas

  • 生物工程
  • 化學 (全部)
  • 生物醫學工程
  • 材料科學(全部)
  • 凝聚態物理學

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