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

Márton Szabados; Rebeka Mészáros; Szabolcs Erdei; Zoltán Kónya; Ákos Kukovecz; Pál Sipos; István Pálinkó

doi:10.1016/j.ultsonch.2016.01.026

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

Ultrason Sonochem. 2016 Jul:31:409-16. doi: 10.1016/j.ultsonch.2016.01.026. Epub 2016 Jan 26.

Authors

Márton Szabados¹, Rebeka Mészáros², Szabolcs Erdei², Zoltán Kónya³, Ákos Kukovecz⁴, Pál Sipos⁵, István Pálinkó⁶

Affiliations

¹ Department of Organic Chemistry, University of Szeged, Dóm tér 8, Szeged H-6720, Hungary; Material and Solution Structure Research Group, Institute of Chemistry, University of Szeged, Aradi Vértanúk tere 1, Szeged H-6720, Hungary.
² Material and Solution Structure Research Group, Institute of Chemistry, University of Szeged, Aradi Vértanúk tere 1, Szeged H-6720, Hungary.
³ Department of Applied and Environmental Chemistry, University of Szeged, Rerrich B. tér 1, Szeged H-6720, Hungary; MTA-SZTE Reaction Kinetics and Surface Chemistry Research Group, Rerrich B. tér 1, Szeged H-6720, Hungary.
⁴ Department of Applied and Environmental Chemistry, University of Szeged, Rerrich B. tér 1, Szeged H-6720, Hungary; MTA-SZTE "Lendület" Porous Nanocomposites Research Group, Rerrich B. tér 1, Szeged H-6720, Hungary.
⁵ Material and Solution Structure Research Group, Institute of Chemistry, University of Szeged, Aradi Vértanúk tere 1, Szeged H-6720, Hungary; Department of Inorganic and Analytical Chemistry, University of Szeged, Dóm tér 7, Szeged H-6720, Hungary.
⁶ Department of Organic Chemistry, University of Szeged, Dóm tér 8, Szeged H-6720, Hungary; Material and Solution Structure Research Group, Institute of Chemistry, University of Szeged, Aradi Vértanúk tere 1, Szeged H-6720, Hungary. Electronic address: palinko@chem.u-szeged.hu.

PMID: 26964966
DOI: 10.1016/j.ultsonch.2016.01.026

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.

Keywords: CaAl-LDH; Mechanochemical pre-treatment; Ultrasonic irradiation; Varied interlayer anions.

Publication types

Research Support, Non-U.S. Gov't