title: 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.
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).
authors.affiliation: 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.
authors.forename: Márton
authors.initials: M
authors.lastname: Szabados
authors.affiliation: Material and Solution Structure Research Group, Institute of Chemistry, University of Szeged, Aradi Vértanúk tere 1, Szeged H-6720, Hungary.
authors.forename: Krisztián
authors.initials: K
authors.lastname: Pásztor
authors.affiliation: 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.
authors.forename: Zita
authors.initials: Z
authors.lastname: Csendes
authors.affiliation: 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.
authors.forename: Szabolcs
authors.initials: S
authors.lastname: Muráth
authors.affiliation: 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.
authors.forename: Zoltán
authors.initials: Z
authors.lastname: Kónya
authors.affiliation: 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.
authors.forename: Ákos
authors.initials: Á
authors.lastname: Kukovecz
authors.affiliation: MAX IV Laboratory, Ole Römers väg 1, Lund SE-223 63, Sweden.
authors.forename: Stefan
authors.initials: S
authors.lastname: Carlson
authors.affiliation: 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.
authors.forename: Pál
authors.initials: P
authors.lastname: Sipos
authors.affiliation: 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.
authors.forename: István
authors.initials: I
authors.lastname: Pálinkó
mesh_terms: D002712:Chlorides; D006878:Hydroxides / Q000737:chemistry*; D013696:Temperature; D014465:Ultrasonics
chemical_list: D002712:Chlorides; D006878:Hydroxides
keywords: CaAlFe-layered triple hydroxides; IR; NEXAFS–EXAFS; Oxyhalides; Thermogravimetric analysis