TiO_2/Ag composite nanowires for a recyclable surface enhanced Raman scattering substrate  

作　　者：邓超越 张谷令 邹斌 施洪龙 梁玉洁 李永超 付金祥 王文忠 

机构地区：[1]School of Science,Minzu University of China

出　　处：《Chinese Physics B》2013年第10期381-386,共6页中国物理B（英文版）

基　　金：Project supported by the National Natural Science Foundation of China (Grant No.10705056);the "985 Project" (Grant No.98507-010009);the "211 Project" of Ministry of Education of China;the Pilot Project of Comprehensive Reform for the Specialty of Applied Physics of Minzu University of China;the Undergraduate Research Training Program of Minzu University of China (Grant Nos.GCCX 2012110007 and 2012110008)

摘　　要：Multifunctional TiO2/Ag composite nanowires are fabricated with a hydrothermal method by precipitating Ag nanoparticles （NPs） on the surfaces of TiO2 nanowires. This hierarchical one-dimensional （1D） nanostructure can be used as a surface enhanced Raman scattering （SERS） substrate with high sensitivity, for detecting the rhodamine 6G （R6G） in a wide range of low concentrations （from 1 × 10 6 M to 1 × 10-12 M）. In addition, the substrate can be self-cleaned under the irradiation of ultraviolet （UV） light due to the superior photocatalytic capacity of the TiO2/Ag composite nanostructure, making the recycled use of SERS substrates closer to reality. With both the evident SERS performance and high efficiency of photocatalytic capacity, such TiOz/Ag composite nanowires demonstrate considerable potential in the chemical sensing of organic pollutants.Multifunctional TiO2/Ag composite nanowires are fabricated with a hydrothermal method by precipitating Ag nanoparticles （NPs） on the surfaces of TiO2 nanowires. This hierarchical one-dimensional （1D） nanostructure can be used as a surface enhanced Raman scattering （SERS） substrate with high sensitivity, for detecting the rhodamine 6G （R6G） in a wide range of low concentrations （from 1 × 10 6 M to 1 × 10-12 M）. In addition, the substrate can be self-cleaned under the irradiation of ultraviolet （UV） light due to the superior photocatalytic capacity of the TiO2/Ag composite nanostructure, making the recycled use of SERS substrates closer to reality. With both the evident SERS performance and high efficiency of photocatalytic capacity, such TiOz/Ag composite nanowires demonstrate considerable potential in the chemical sensing of organic pollutants.

关 键 词：surface enhanced Raman scattering TIO2 PHOTODEGRADATION RECYCLABLE 

分 类 号：TB383.1[一般工业技术—材料科学与工程]