光散射学报, 2005, 17 (1): 100, 网络出版: 2006-05-19
用于SERS基底的Au-Pd核壳纳米颗粒和银纳米立方颗粒的制备及表征
Synthesis and Characterization of Au-Pd Core-Shell Nanoparticles and Ag Nanocubes Used as SERS Substrates
表面增强拉曼散射 纳米粒子 纳米立方 单晶表面 surface-enhanced Raman scattering nanoparticle nanocube singlecrystal surface
摘要
本文研究了尺寸可控的Au-Pd核壳纳米粒子和银纳米立方颗粒的表面增强拉曼散射(SERS)活性.发现Au-Pd核壳纳米粒子的增强能力要比粗糙的钯电极强;银纳米立方颗粒的增强能力和粗糙的银电极相当.更为重要的是,银纳米立方颗粒既具有原子级平整的小单晶面又处于纳米尺度,因而它们可以作为粗糙表面和结构确定的单晶表面之间的桥梁,对其SERS效应的研究可以加深人们对SERS机理的认识.
Abstract
Surface-enhanced Ramanscattering (SERS) activity of both size-controllable Au-Pd core-shell nanoparticles and Agnanocubes was studied. It was observed that Au-Pd core-shell nanoparticles are moreSERS-active than the roughened massive Pd electrode, and Ag nanocubes exhibit excellentSERS activity comparable to that of a roughened massive silver electrode. Moreimportantly, because the Ag nanocubes not only possess atomic-flat small single crystalfacets but also are on the nanometer scale, they can serve as a bridge between roughenedsurfaces and well-defined single crystal surfaces and provide new insight into thecomplicated SERS mechanism.
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HU Jia-wen, ZHOU Hai-hui, ZHANG Yong, JIANG Yang, REN Bin, TIAN Zhong-qun. 用于SERS基底的Au-Pd核壳纳米颗粒和银纳米立方颗粒的制备及表征[J]. 光散射学报, 2005, 17(1): 100. HU Jia-wen, ZHOU Hai-hui, ZHANG Yong, JIANG Yang, REN Bin, TIAN Zhong-qun. Synthesis and Characterization of Au-Pd Core-Shell Nanoparticles and Ag Nanocubes Used as SERS Substrates[J]. The Journal of Light Scattering, 2005, 17(1): 100.