摘要
通过化学还原法将Ag纳米粒子担载到锐钛/TiO2(B)双晶材料上,并将其作为表面增强拉曼散射(SERS)基底,用于有机探针分子4-巯基苯甲酸的痕量检测。研究表明:双晶氧化钛特殊的能带结构有利于光响应过程中电子-空穴的定向转移,从而比纯锐钛矿具有更优异的电子转移能力,因此能够得到更佳的SERS性能。这种现象表明,双晶氧化钛材料是SERS技术应用到检测领域的理想载体。
The silver（Ag） nanoparticles were loaded on bicrystalline （ anatase/TiO2 （B） ） materials by chemical reduction methods, which was then used as surface-enhanced Raman scattering substrate for the detection of trace 4-mercaptobenzoic acid（ 4-MBA）, an organic probe. The results showed that bicrystalline TiO2 had a specific energy band structure, which was favor to directional transfer of electrons and holes, so it had a more efficient charge trans- fer capability than the pure anatase. Thus, the better SERS performance was observed on Ag/（ anatase/TiO2 （B） ） substrates. Therefore the bicrystalline TiO2 is an ideal carrier for the appli- cation of SERS technology in determination and test area.
出处
《涂料工业》
CAS
CSCD
北大核心
2014年第3期14-18,共5页
Paint & Coatings Industry
基金
国家自然科学基金重点基金(项目编号21136004)
国家自然科学基金青年基金(项目编号20706028)
