Observation of Enhanced Raman Scattering for Molecules Adsorbed on TiO2 Nanoparticles: Charge-Transfer Contribution

被引：316

作者：

Yang, Libin ^{[1
,2
]}

Jiang, Xin ^{[2
]}

Ruan, Weidong ^{[1
]}

Zhao, Bing ^{[1
]}

Xu, Weiqing ^{[1
]}

Lombardi, John R. ^{[3
]}

机构：

[1] Jilin Univ, State Key Lab Supramol Struct & Mat, Changchun 130012, Peoples R China

[2] Jiamusi Univ, Coll Chem & Pharmacol, Jiamusi 154007, Peoples R China

[3] CUNY City Coll, Dept Chem, New York, NY 10031 USA

来源：

JOURNAL OF PHYSICAL CHEMISTRY C | 2008年 / 112卷 / 50期

关键词：

D O I：

10.1021/jp8074145

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 from molecules adsorbed on TiO2 nanoparticles has been observed. This is attributed to the dominant contribution of the TiO2-to-molecule charge-transfer mechanism. The charge-transfer process is largely dependent on the intrinsic nature of the adsorbed molecules and the surface properties of the semiconductor. Both the stronger electron attracting ability of groups para- to the mercapto group bonded with TiO2 surface and the plentiful surface states of TiO2 nanoparticles are favorable to TiO2-to-molecule charge-transfer and SERS for molecules adsorbed on TiO2.

引用

页码：20095 / 20098

页数：4

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