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题名: Characterization of Ag/Pt core-shell nanoparticles by UV-vis absorption, resonance light-scattering techniques
作者: Chen, Langxing;  Zhao, Wenfeng;  Jiao, Wen;  He, Xiwen;  Wang, Jing;  Zhang, Yukui
关键词: core-shell ;  Ag/Pt bimetallic nanoparticles ;  resonance light-scattering ;  Nonlinear
刊名: SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
发表日期: 2007-11-01
DOI: 10.1016/j.saa.2006.12.014
卷: 68, 期:3, 页:484-490
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Technology
类目[WOS]: Spectroscopy
研究领域[WOS]: Spectroscopy
英文摘要: The water-soluble Ag/Pt core-shell nanoparticles were prepared by deposition Pt over Ag colloidal seeds with the seed-growth method using K2PtCl4 with trisodium citrate as reduced agent. The Ag:Pt ratio is varied from 9:1 to 1:3 for synthesizing Pt shell layer of different thickness. A remarkable shift and broadening of Ag surface plasmon band around 410 nm was observed. The contrast of TEM images of Ag/Pt colloids has been obtained. Various techniques, such as transmission electron microscopy (TEM), UV-vis absorption and resonance light-scattering spectroscopy were used to characterize nanoparticles. The data of TEM, UV-vis and resonance light-scattering spectrum all confirm formation of Ag/Pt core-shell nanoparticles. Resonance light-scattering and emission spectrum show the Ag and Ag/Pt core-shell nanoparticles have a nonlinear light-scattering characteristic. (C) 2006 Elsevier B.V. All rights reserved.
关键词[WOS]: ENHANCED RAMAN-SCATTERING ;  TRANSITION-METAL INTERFACES ;  PD BIMETALLIC CLUSTERS ;  AQUEOUS-SOLUTION ;  PLATINUM-GROUP ;  AU-AG ;  FILMS ;  PARTICLES ;  GOLD ;  GOLD/PALLADIUM
语种: 英语
WOS记录号: WOS:000250607900014
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/140514
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Nankai Univ, Dept Chem, Tianjin 30071, Peoples R China
2.Chinese Acad Sci, Dalian Inst Chem Phys, Natl Chromatog Res & Anal Ctr, Dalian 116011, Peoples R China

Recommended Citation:
Chen, Langxing,Zhao, Wenfeng,Jiao, Wen,et al. Characterization of Ag/Pt core-shell nanoparticles by UV-vis absorption, resonance light-scattering techniques[J]. SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY,2007,68(3):484-490.
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