过渡金属表面紫外线激发的表面增强Raman光谱(UV-SERS)研究  

Ultraviolet Laser excited Surface-enhanced Raman Spectroscopy on Transitional Metal Surfaces

作　　者：崔丽[1] 汪安[1] 吴德印[1] 田中群[1] 任斌[1] 

机构地区：[1]厦门大学化学化工学院化学系固体表面物理化学国家重点实验室,厦门361005

出　　处：《光散射学报》2007年第4期347-351,共5页The Journal of Light Scattering

基　　金：国家自然科学基金资助项目(No.10474082;20673086);教育部博士点基金(20040384010);新世纪优秀人才计划(NCET-05-0564).

摘　　要：本文以紫外光325 nm作为激发线,成功获得了不同形貌的铂纳米粒子(铂纳米立方体和纳米絮状物),电化学粗糙的钴和镍电极在紫外区的表面增强拉曼散射(UV-SERS)效应。同时发现不同形貌的铂纳米结构在紫外区有不同的SERS效应,不同金属在紫外区的增强效应也不同,其中铂纳米立方体产生了最好的增强效应,这一结果也预示有必要发展更优的基底。为了利用UV-SERS研究具有重要应用意义的分子,同时也为了验证铂纳米立方体在紫外区的增强效应具有分子的普适性,我们研究了CO和腺嘌呤分子吸附在铂纳米立方体上的UV-SERS。With excitation line at 325 nm （UV laser）, surface-enhanced Raman scattering effect was observed on platinum nanocubes and nanoflocs and Co and Ni electrode surfaces roughened by oxidation - reduction cycles. UV- SERS enhancement varies with the morphologies of same metal and the metal materials. Pt nanocuhes were found to show the highest enhancement. The result indicates there is still room to further improve the enhancement of UVSERS by optimizing the size, shape and structure of nanoparticles. In order to verify the molecular generalities, CO and adenine molecules were selected as the probe molecules, and reasonable good UV - SERS signals were obtained.

关 键 词：紫外表面增强拉曼 硫氰 腺嘌呤 铂纳米粒子 钴 镍 

分 类 号：O433.4[机械工程—光学工程]