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...
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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 |
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Article |
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doaj-71d9aa2ea6394fb7a422091b2777d9f32021-04-02T18:20:12ZengHindawi - SAGE PublishingAdsorption Science & Technology0263-61742048-40381996-10-011410.1177/026361749601400507Relaxation Processes of Water Molecules on Surfaces of Highly Dispersed Silica and Titania/SilicaV.I. ZarkoV.M. Gun'koAnalyses 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.https://doi.org/10.1177/026361749601400507 |
| collection |
DOAJ |
| language |
English |
| format |
Article |
| sources |
DOAJ |
| author |
V.I. Zarko V.M. Gun'ko |
| spellingShingle |
V.I. Zarko V.M. Gun'ko Relaxation Processes of Water Molecules on Surfaces of Highly Dispersed Silica and Titania/Silica Adsorption Science & Technology |
| author_facet |
V.I. Zarko V.M. Gun'ko |
| author_sort |
V.I. Zarko |
| title |
Relaxation Processes of Water Molecules on Surfaces of Highly Dispersed Silica and Titania/Silica |
| title_short |
Relaxation Processes of Water Molecules on Surfaces of Highly Dispersed Silica and Titania/Silica |
| title_full |
Relaxation Processes of Water Molecules on Surfaces of Highly Dispersed Silica and Titania/Silica |
| title_fullStr |
Relaxation Processes of Water Molecules on Surfaces of Highly Dispersed Silica and Titania/Silica |
| title_full_unstemmed |
Relaxation Processes of Water Molecules on Surfaces of Highly Dispersed Silica and Titania/Silica |
| title_sort |
relaxation processes of water molecules on surfaces of highly dispersed silica and titania/silica |
| publisher |
Hindawi - SAGE Publishing |
| series |
Adsorption Science & Technology |
| issn |
0263-6174 2048-4038 |
| publishDate |
1996-10-01 |
| description |
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. |
| url |
https://doi.org/10.1177/026361749601400507 |
| work_keys_str_mv |
AT vizarko relaxationprocessesofwatermoleculesonsurfacesofhighlydispersedsilicaandtitaniasilica AT vmgunko relaxationprocessesofwatermoleculesonsurfacesofhighlydispersedsilicaandtitaniasilica |
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