Grafting reactions of perovskite-like bismuth titanate H2K0.5Bi2.5Ti4O13·H2O with n-alcohols

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Abstract

The possibility to prepare new organic-inorganic hybrids by grafting reactions of the protonated perovskite-like oxide H2K0.5Bi2.5Ti4O13·H2O (HKBT4·H2O) with n-alcohols (with alkyl chain length nc = 1–4, 6, 10) has been studied. The reactions have been conducted by grafting using preliminarily n-butylamine and n-octylamine intercalated derivatives of HKBT4 and in the case of n-decanol, the alcohol exchange approach of shorter-chain alcohols substitution has been also performed. Grafting reactions have been conducted at various temperatures with a view to fully substitution the n-alkylamine by n-alcohols. The obtained samples have been characterized by powder XRD analysis, NMR spectroscopy, CHN analysis, and SEM. The thermal stability has been studied by thermogravimetric analysis. It was shown that the pure methanol and ethanol hybrids could not be obtained in conditions tested and the optimal conditions of preparation of other n-alcohol hybrids have been established. In addition, it was shown that the HKBT4 compound is easily subjected to bismuth reduction at high temperatures, leading to the destruction of the perovskite-like structure.

Original languageEnglish
Pages (from-to)1197-1203
JournalCeramics International
Volume408
Issue number3
DOIs
StatePublished - 2020

Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Process Chemistry and Technology
  • Surfaces, Coatings and Films
  • Materials Chemistry

Keywords

  • Inorganic-organic hybrids
  • Perovskites
  • Powders: solid-state reaction
  • Thermal properties
  • Transition metal oxides

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