RETRACTED: Surface enhanced Raman scattering at single crystal TiO2 (Retracted article. See vol. 358, pg. 184, 2009)

被引：14
作者：
Liao, LB [1 ]
Zhou, HY
Xiao, MM
机构：
[1] Guangzhou Inst Geochem, State Key Lab Organ Geochem, Guangzhou 510640, Guangdong, Peoples R China
[2] Zhongshan Univ, Instrumental & Anal Res Ctr, Guangzhou, Guangdong, Peoples R China
来源：
CHEMICAL PHYSICS | 2005年 / 316卷 / 1-3期
关键词：
single crystal; physicochemical interaction; enhancement mechanism; coordinate bond;
D O I：
10.1016/j.chemphys.2005.05.012
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Surface enhanced Raman scattering of pyridine molecules was observed on crystalline rutile TiO2 (110) in an Ultra High Vacuum (UHV) chamber along with in situ scanning tunneling micrograph (STM) and Quartz Crystals Microbalance (QCM). It was interesting to note that a new Raman band at 247 cm(-1) appeared and we ascribed it to the Ti-N vibration between nitrogen of adpyridine molecule and titanium of TiO2. The site and azimuthal orientation of adpyridine molecules on TiO2 (110)-(1x1) surface were explicitly recorded by in situ STM. Besides the charge transfer mechanism, a mechanism was proposed to interpret the origin of the Raman intensity enhancement. (C) 2005 Elsevier B.V. All rights reserved.
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页码：164 / 170
页数：7
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