Synthesis of high-quality, well-characterized CaAlFe-layered triple hydroxide with the combination of dry-milling and ultrasonic irradiation in aqueous solution at elevated temperature

Research output: Contribution to journalArticle

Abstract

The combination of mechanochemical and ultrasonic treatment was applied to synthesize CaAlFe-layered triple hydroxides with carbonate or chloride anions in the interlamellar space. The optimal parameters of the preparation were explored by altering the initial ratio of the metal ions and the temperature of ultrasonic irradiation. The resulting triple hydroxides were characterized by X-ray diffractometry, infrared and X-ray absorption spectroscopies, thermogravimetric analysis and scanning electron microscopy. The products were close-to-phase-pure CaAlFe-layered triple hydroxides. Elevation of the temperature transformed the CaAlFe-Cl--layered triple hydroxide to rare oxyhalides (Ca2FeO3Cl and Ca12Al14O32Cl2).

Details

Authors
  • Márton Szabados
  • Krisztián Pásztor
  • Zita Csendes
  • Szabolcs Muráth
  • Zoltán Kónya
  • Ákos Kukovecz
  • Stefan Carlson
  • Pál Sipos
  • István Pálinkó
Organisations
External organisations
  • University of Szeged
Research areas and keywords

Keywords

  • CaAlFe-layered triple hydroxides, IR, NEXAFS-EXAFS, Oxyhalides, Thermogravimetric analysis
Original languageEnglish
Pages (from-to)173-180
Number of pages8
JournalUltrasonics Sonochemistry
Volume32
Publication statusPublished - 2016 Sep 1
Publication categoryResearch
Peer-reviewedYes