Ultrasonically-enhanced mechanochemical synthesis of CaAl-layered double hydroxides intercalated by a variety of inorganic anions

Márton Szabados, Rebeka Mészáros, Szabolcs Erdei, Z. Kónya, Á. Kukovecz, P. Sipos, I. Pálinkó

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17 Citations (Scopus)

Abstract

CaAl-layered double hydroxides (CaAl-LDHs) were synthesised with various interlayer anions (CO3 2-, F-, Cl-, Br- and I-) by mechanochemical pre-treatment followed by ultrasonic irradiation in aqueous media. The parameters of the syntheses (duration of pre-milling and sonication, quality of the aqueous media, temperature) were altered in order to optimise the procedure and to understand the formation of LDH and other secondary products. The products were characterised by X-ray diffractometry (XRD) and scanning electron microscopy (SEM). The optimisation resulted in close-to-phase-pure CaAl-LDHs, not only with carbonate and chloride interlayer anions, but the hard-to-intercalate bromide and iodide as well.

Original languageEnglish
Pages (from-to)409-416
Number of pages8
JournalUltrasonics Sonochemistry
Volume31
DOIs
Publication statusPublished - Jul 1 2016

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Keywords

  • CaAl-LDH
  • Mechanochemical pre-treatment
  • Ultrasonic irradiation
  • Varied interlayer anions

ASJC Scopus subject areas

  • Chemical Engineering (miscellaneous)
  • Acoustics and Ultrasonics
  • Radiology Nuclear Medicine and imaging

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