Water Types and Their Relaxation Behavior in Partially Rehydrated CaFe-Mixed Binary Oxide Obtained from CaFe-Layered Double Hydroxide in the 155–298 K Temperature Range
| Autor: | Pál Sipos, Henrik Haspel, Valéria Bugris, Ákos Kukovecz, István Pálinkó, Zoltán Kónya, Mónika Sipiczki |
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| Rok vydání: | 2013 |
| Předmět: |
Inorganic chemistry
Analytical chemistry Oxide Binary number Surfaces and Interfaces Dielectric Atmospheric temperature range Condensed Matter Physics Relaxation behavior chemistry.chemical_compound chemistry Electrochemistry Molecule Relaxation (physics) Hydroxide General Materials Science Spectroscopy |
| Zdroj: | Langmuir. 29:13315-13321 |
| ISSN: | 1520-5827 0743-7463 |
| DOI: | 10.1021/la4035276 |
| Popis: | Heat-treated CaFe-layered double hydroxide samples were equilibrated under conditions of various relative humidities (11%, 43% and 75%). Measurements by FT-IR and dielectric relaxation spectroscopies revealed that partial to full reconstruction of the layered structure took place. Water types taking part in the reconstruction process were identified via dielectric relaxation measurements either at 298 K or on the flash-cooled (to 155 K) samples. The dynamics of water molecules at the various positions was also studied by this method, allowing the flash-cooled samples to warm up to 298 K. |
| Databáze: | OpenAIRE |
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