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银/铂双金属中空纳米颗粒的制备及光学性质研究 被引量：2

Preparation and Optical Properties of Ag/Pt Bimetallic Hollow Nanoparticles
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摘要 通过以Ag纳米颗粒为模板的置换和沉积反应,制备了Ag/Pt双金属复合纳米颗粒.用透射电子显微镜(TEM)对颗粒的形貌、尺寸和结构进行了表征,发现复合颗粒具有中空结构.紫外可见吸收光谱(UV-Vis)研究表明,Ag/Pt双金属中空复合纳米颗粒具有单峰的表面等离子共振吸收特征,随着反应溶液中氯铂酸和硝酸银摩尔比的增加,吸收峰先红移后蓝移.表面增强拉曼光谱实验结果表明,Ag/Pt双金属复合纳米颗粒对吡啶分子具有较好的增强效果. 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 imeriors. 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.
作者 高继宁 任湘菱 唐芳琼
机构地区 中国科学院理化技术研究所
出处 《感光科学与光化学》 EI CSCD 2006年第5期360-365,共6页 Photographic Science and Photochemistry
基金 国家自然科学基金面上项目(60372009 60572031) 北京市自然科学基金项目(4063042)
关键词 中空纳米颗粒 双金属纳米颗粒 表面等离子共振 表面增强拉曼光谱 hollow nanoparticles bimetallic nanoparticles surface plasmon resonance surface enhanced Raman spectroscopy
分类号 TB383.1 [一般工业技术—材料科学与工程]
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参考文献17

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共引文献14

同被引文献19

  • 1周海辉,吴德印,胡建强,连天泉,田中群.银和去合金银-金纳米粒子的SERS活性研究[J].光散射学报,2004,16(3):221-224. 被引量：6
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感光科学与光化学
2006年 第5期

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