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

Valéria Bugris, Henrik Haspel, Ákos Kukovecz, Zoltán Kónya, Mónika Sipiczki, Pál Sipos, István Pálinkó

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

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.

Original languageEnglish
Pages (from-to)13315-13321
Number of pages7
JournalLangmuir
Volume29
Issue number43
DOIs
Publication statusPublished - Oct 29 2013

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Spectroscopy
  • Electrochemistry

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