Molecular species on nanoparticulate anatase TiO2 film detected by sum frequency generation:: Trace hydrocarbons and hydroxyl groups

被引：143

作者：

Wang, CY ^{[1
]}

Groenzin, H ^{[1
]}

Shultz, MJ ^{[1
]}

机构：

[1] Tufts Univ, Dept Chem, Pearson Lab, Medford, MA 02155 USA

来源：

LANGMUIR | 2003年 / 19卷 / 18期

关键词：

D O I：

10.1021/la0345542

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Visible-infrared sum frequency generation (SFG) has been applied to probe molecular species on the surface of nanoparticulate anatase TiO2 films. A trace hydrocarbon film on the surface, not detected by Fourier transform infrared spectroscopy (FTIR), is easily sensed with SFG. The first direct observation of hydroxyl groups (-OH) on the TiO2 film surface by SFG is reported. A broad vibrational band with multiple peaks in the region of 3500-3800 cm(-1) ascribed to OH groups reflects the surface heterogeneity of the material.

引用

页码：7330 / 7334

页数：5

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