期刊
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
卷 123, 期 -, 页码 224-229出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.saa.2013.12.087
关键词
SERS; TiO2; Metal doping; Charge transfer
类别
资金
- National Natural Science Foundation of People's Republic of China [21003063]
- Natural Science Foundation of Heilongjiang Province of China [B201006, B201309]
- Program for New Century Excellent Talents in Heilongjiang Provincial University [1253-NCET-023]
- Scientific Research Program of Health Department of Heilongjiang Province [2012-263]
- Provincial Undergraduate Training Programs for Innovation and Entrepreneurship of Jiamusi University [2012sj030]
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. (C) 2013 Elsevier B.V. All rights reserved.
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