An ONIOM and DFT Study of Water Adsorption on Rutile TiO2 (110) Cluster

被引：11
|
作者：
Erdogan, Rezan [1 ]
Fellah, Mehmet Ferdi [1 ,2 ]
Onal, Isik [1 ]
机构：
[1] Middle E Tech Univ, Dept Chem Engn, TR-06531 Ankara, Turkey
[2] Yuzuncu Yil Univ, Dept Chem Engn, TR-65080 Van, Turkey
来源：
INTERNATIONAL JOURNAL OF QUANTUM CHEMISTRY | 2011年 / 111卷 / 01期
关键词：
DFT; ONIOM; rutile; water adsorption; 1ST-PRINCIPLES CALCULATIONS; MOLECULAR ADSORPTION; AB-INITIO; TIO2(110); SURFACE; H2O; EXCHANGE; DENSITY; CHEMISORPTION; DIFFRACTION;
D O I：
10.1002/qua.22400
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：
Density functional theory (DFT) calculations performed at ONIOM DFT B3LYP/6-31G**-MD/UFF level are employed to study molecular and dissociative water adsorption on rutile TiO2 (110) surface represented by partially relaxed Ti25O37 ONIOM cluster. DFT calculations indicate that dissociative water adsorption is not favorable because of high activation barrier (23.2 kcal/mol). The adsorption energy and vibration frequency of both molecularly and dissociatively adsorbed water molecule on rutile TiO2 (110) surface compare well with the values reported in the literature. (C) 2009 Wiley Periodicals, Inc. Int J Quantum Chem 111: 174-181, 2011
引用
收藏
页码：174 / 181
页数：8
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