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Synthesis of Ag2@TiO2 Dimeric Core-shell Nanopaticles and Non-resonance Raman Spectroscopy Studies of TiO2-N719 interface

Abstract

表面增强拉曼光谱(SERS)因其具有极高的表面检测灵敏度而适合于物种表面吸附研究。Ag和Au等贵金属纳米粒子在可见光区发生局域表面等离子体共振(LSPR)效应而增强局域表面光电场,其与惰性超薄层构成的核壳结构最近被作为拉曼散射“增强剂”,并由此产生了壳层隔离纳米粒子增强拉曼光谱(SHINERS)技术。在近年来关于能源器件的基础研究中,将纳米粒子的LSPR效应与SHINERS技术对Raman信号的增强用于能源器件中电化学界面的研究逐渐成为一个新兴的热点。为了研究染料敏化太阳能电池中二氧化钛-染料分子界面的微观结构和作用方式,本课题组合成了Ag@TiO2纳米粒子,利用Ag的LSPR,对染料分子N7...Because of the high sensitivity in molecular detection, the surface-enhanced Raman spectroscopy (SERS) is widely used in surface electrochemistry studies. Tian group developed a new SERS technique named SHINERS (shell-isolated nanoparticle-enhanced Raman spectroscopy), in which nanoparticles such as Au@SiO2 are used as Raman signal enhancement. In the previous work in our group, which affect the e...学位:理学硕士院系专业:化学化工学院_物理化学(含化学物理)学号:2052011115168

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