Preparation and Optical Properties of Ag/Pt Bimetallic Hollow Nanoparticles

doi:10.7517/j.issn.1674-0475.2006.05.360

Imaging Science and Photochemistry ›› 2006, Vol. 24 ›› Issue (5): 360-365.DOI: 10.7517/j.issn.1674-0475.2006.05.360

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Preparation and Optical Properties of Ag/Pt Bimetallic Hollow Nanoparticles

GAO Ji-ning^1,2, REN Xiang-ling¹, TANG Fang-qiong¹

1. Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100080, P. R. China;
2. Graduate School of the Chinese Academy of Sciences, Beijing 100039, P. R. China.

Received:2006-04-13 Revised:2006-05-24 Online:2006-09-23 Published:2006-09-23

Abstract

Abstract: Bimatallic Ag/Pt nanoparticles were prepared based on Ag nanoparticle-mediated replacement and deposition reactions.The morphology,size,and structure of the bimetallic nanoparticles were characterized by transmission electron microscopy;it was found that these nanoparticles are bearing hollow interiors.The UV-Vis absorption spectra show the characteristic of single plasmon resonance absorption band and the peak initially red shift and then blue shift with increasing the molar ratio of H₂PtCl₆ to AgNO₃ in the reacting solution.Surface enhanced Raman spectroscopy results show that these nanoparticles remain SERS active when pyridine was used as adsorbate probe.

Key words: hollow nanoparticles, bimetallic nanoparticles, surface plasmon resonance, surface enhanced Raman spectroscopy

CLC Number:

GAO Ji-ning, REN Xiang-ling, TANG Fang-qiong. Preparation and Optical Properties of Ag/Pt Bimetallic Hollow Nanoparticles[J]. Imaging Science and Photochemistry, 2006, 24(5): 360-365.

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Preparation and Optical Properties of Ag/Pt Bimetallic Hollow Nanoparticles

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