Effects of Mn doping on surface enhanced Raman scattering properties of TiO₂ nanoparticles.
TiO(2) and Mn-doped TiO(2) (1%, 3% and 5%) nanoparticles (NPs) were synthesized by a sol-hydrothermal method for surface-enhanced Raman spectroscopy study. When using the 4-mercaptobenzoic acid (4-MBA) as the probing molecule, optimum SERS signals were observed on the Mn-TiO(2) (3%) samples. On the 3% Mn doped TiO(2) substrate, 4-MBA molecules exhibit a higher SERS intensity by a factor of six as compared with the native enhancement of 4-MBA adsorbed on pure TiO(2) NPs. The possible mechanism for the phenomena is also discussed. This study opens up a new dimension for the family of SERS substrates.
State Key Laboratory of Supramolecular Structure and Materials, Jilin University, Changchun 130012, PR China.
Xiangxin
X
Xue
Wei
W
Ji
Zhu
Z
Mao
Zhishi
Z
Li
Weidong
W
Ruan
Bing
B
Zhao
John R
JR
Lombardi
D000042:Absorption; D000327:Adsorption; D001565:Benzoates / Q000737:chemistry; D007477:Ions; D008345:Manganese / Q000737:chemistry*; D053758:Nanoparticles / Q000737:chemistry* / Q000648:ultrastructure; D056951:Photoelectron Spectroscopy; D013056:Spectrophotometry, Ultraviolet; D013059:Spectrum Analysis, Raman; D013438:Sulfhydryl Compounds / Q000737:chemistry; D013499:Surface Properties; D014025:Titanium / Q000737:chemistry*; D014961:X-Ray Diffraction
D001565:Benzoates; D007477:Ions; D013438:Sulfhydryl Compounds; C013594:4-mercaptobenzoate; C009495:titanium dioxide; D008345:Manganese; D014025:Titanium