Relaxation Processes of Water Molecules on Surfaces of Highly Dispersed Silica and Titania/Silica
Analyses of dielectric spectra and theoretical simulation results demonstrate that the most probable sites for water cluster adsorption are the B-sites at the TiO 2 /SiO 2 (TS) phase boundary regions and the SiOH groups on the SiO 2 phase in TS. The amount of water on SiO 2 in TS is lower than for p...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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Hindawi - SAGE Publishing
1996-10-01
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| Series: | Adsorption Science & Technology |
| Online Access: | https://doi.org/10.1177/026361749601400507 |
| Summary: | Analyses of dielectric spectra and theoretical simulation results demonstrate that the most probable sites for water cluster adsorption are the B-sites at the TiO 2 /SiO 2 (TS) phase boundary regions and the SiOH groups on the SiO 2 phase in TS. The amount of water on SiO 2 in TS is lower than for pure SiO 2 for the same content of water at the TiO 2 /SiO 2 and SiO 2 surfaces. The energy necessary for the rotation of a water molecule is a maximum for molecules linked via one electron-donor bond M←OH 2 and three hydrogen bonds with other water molecules. |
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| ISSN: | 0263-6174 2048-4038 |