College of Pharmacy, Jiamusi University, Jiamusi 154007, China.
College of Pharmacy, Jiamusi University, Jiamusi 154007, China.
Spectrochim Acta A Mol Biomol Spectrosc. 2014 Apr 5;123:224-9. doi: 10.1016/j.saa.2013.12.087. Epub 2013 Dec 25.
In this paper, pure and different amount Co ions doped TiO2 nanoparticles were synthesized by a sol-hydrothermal method and were served as SERS-active substrate. The effect of metal Co doping on SERS properties of TiO2 nanoparticles was mostly investigated. The results indicate that abundant metal doping energy levels can be formed in the energy gap of TiO2 by an appropriate amount Co ions doping, which can promote the charge transfer from TiO2 to molecule, and subsequently enhance SERS signal of adsorbed molecule on TiO2 substrate, and improve remarkably SERS properties of TiO2 nanoparticles.
本文采用溶胶-水热法合成了纯相及不同掺量 Co 离子掺杂的 TiO2 纳米粒子，并将其作为 SERS 活性基底。主要研究了金属 Co 掺杂对 TiO2 纳米粒子 SERS 性能的影响。结果表明，适量 Co 离子掺杂在 TiO2 的能带隙中可以形成丰富的金属掺杂能级，促进 TiO2 到分子的电荷转移，从而增强吸附在 TiO2 基底上的分子的 SERS 信号，显著提高 TiO2 纳米粒子的 SERS 性能。
