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Investigation on SERS of different phase structure TiO 2 nanoparticles
Author(s) -
Yang Libin,
Gong Mengdi,
Jiang Xin,
Yin Di,
Qin Xiaoyu,
Zhao Bing,
Ruan Weidong
Publication year - 2015
Publication title -
journal of raman spectroscopy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.748
H-Index - 110
eISSN - 1097-4555
pISSN - 0377-0486
DOI - 10.1002/jrs.4645
Subject(s) - anatase , rutile , nanoparticle , raman spectroscopy , raman scattering , phase (matter) , molecule , crystal (programming language) , crystal structure , adsorption , materials science , hydrothermal circulation , chemical engineering , surface charge , hydrothermal synthesis , nanotechnology , chemistry , crystallography , photocatalysis , organic chemistry , optics , catalysis , physics , engineering , computer science , programming language
In this paper, anatase and rutile TiO 2 nanoparticles as well as their mixed crystal phase structure TiO 2 nanoparticles were synthesized by a sol‐hydrothermal method, and were served as active substrates for surface‐enhanced Raman scattering (SERS) study. The results show that the 4‐mercaptobenzoic acid probe molecules exhibit different degree SERS enhancements on the surface of different phase structure TiO 2 nanoparticles. The mixed crystal structure TiO 2 with an appropriate proportion of anatase and rutile phase is favourable to SERS enhancement of adsorbed molecules. These are mainly attributed to the contributions of the TiO 2 ‐to‐molecule charge transfer mechanism and the mixed crystal effect. Copyright © 2015 John Wiley & Sons, Ltd.