Ag/TiO2 Nanopore Array for Recyclable SERS Active Substrates

作者：Zhou Xin; Xu Ling; Yao Aihua^*; Wang Deping

来源：Rare Metal Materials and Engineering, 2017, 46(12): 3853-3857.

• TiO2 nanopore array
• Ag
• surface enhanced Raman scattering
• recyclability

TiO2 nanopore array was firstly prepared by a three-stepped anodization process, and subsequently Ag nanoparticles with size 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 its uniformity, stability and recyclability were investigated. The results show that the Ag/TiO2 substrates deliver a detection limit up to similar to 10(-7) mol/L under excitation at 532 nm. Moreover, the substrates exhibit outstanding uniformity and stability. The Ag/TiO2 nanoarray also experiences photocatalysis decomposition of adsorbed R6G molecules after 30 min irradiation under simulated solar light, exhibiting high recyclability. Such an Ag/TiO2 nanopore array has great potential as an ideal SERS active substrate due to its highly ordered structure and excellent properties.

• 出版日期2017-12
• 单位同济大学