周鑫,徐玲,姚爱华,王德平.Ag/TiO2多孔阵列作为可再生的SERS活性基底[J].稀有金属材料与工程,2017,46(12):3853~3857.[Zhou Xin,Xu Ling,Yao Aihua,Wang Deping.Ag/TiO2 Nanopore Array for A Recyclable SERS Active Substrates[J].Rare Metal Materials and Engineering,2017,46(12):3853~3857.]
Ag/TiO2多孔阵列作为可再生的SERS活性基底
投稿时间:2015-09-22  修订日期:2016-03-17
中文关键词:  TiO2纳米孔阵列    表面增强拉曼散射  可再生性
基金项目:国家自然科学基金资(项目号50702037)、上海市自然科学基金(项目号13ZR1444200)及中央高校基本科研业务费专项基金资助
中文摘要:
      采用三次阳极氧化法制备了TiO2纳米孔阵列,然后通过连续离子层吸附法在其上负载30 nm左右的Ag纳米颗粒,并将Ag/TiO2作为SERS活性基底,研究了其对罗丹明6G(R6G)的表面增强拉曼散射(SERS)效应,同时对基底的均匀性、稳定性和可再生性能进行了系统研究。结果显示,在激发波长为532 nm的情况下,该基底对R6G分子的检测限达到~10-7mol/L,且具有较好的均匀性和稳定性;吸附了R6G分子的Ag/TiO2基底经模拟太阳光照射后,30 min内即可将所吸附的待测分子降解,显示出良好的可再生性能。基于其高度有序的结构和良好的性能,所制备的Ag/TiO2多孔孔阵列有望作为一种理想的SERS活性基底而在相关领域获得应用。
Ag/TiO2 Nanopore Array for A Recyclable SERS Active Substrates
英文关键词:TiO2 nanopore array  Ag  surface enhanced Raman scattering  recyclability
英文摘要:
      :TiO2 nanopore array was firstly prepared by three-stepped anodization process, and subsequently Ag nanoparticles with sizes of 30 nm were deposited on TiO2 nanoarray through a continuous ion layer adsorption. The resulting Ag/TiO2 nanopore array was then used as a surface enhanced Raman scattering (SERS) active substrate, and their uniformity, stability and recyclability were investigated. The results showed that the Ag/TiO2 substrates delivered a detection limit of up to ~10-7 mol/L under excitation at 532 nm. Moreover, the substrates exhibited outstanding uniformity and stability. The Ag/TiO2 nanoarray also conducted photocatalysis decomposition of adsorbed R6G molecules after 30 min irradiation under simulated solar light, exhibiting high recyclability. Such a Ag/TiO2 nanopore array has great potential as an ideal SERS active substrate due to its highly ordered structure and excellent properties.
作者单位E-mail
周鑫 同济大学材料科学与工程学院 zhouxinry@yahoo.cn 
徐玲 同济大学材料科学与工程学院  
姚爱华 同济大学先进土木工程材料教育部重点实验室 aihyao@126.com 
王德平 同济大学先进土木工程材料教育部重点实验室  
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