Ultrasonically-enhanced preparation, characterization of CaFe-layered double hydroxides with various interlayer halide, azide and oxo anions (CO3 2−, NO3 −, ClO4 −)
(2018) In Ultrasonics Sonochemistry 40. p.853-860- Abstract
An ultrasonically-enhanced mechanochemical method was developed to synthesize CaFe-layered double hydroxides (LDHs) with various interlayer anions (CO3 2−, NO3 −, ClO4 −, N3 −, F−, Cl−, Br− and I−). The duration of pre-milling and ultrasonic irradiation and the variation of synthesis temperature in the wet chemical step were investigated to obtain the optimal parameters of preparation. The main method to characterize the products was X-ray diffractometry, but infrared and synchrotron-based X-ray absorption spectroscopies as well as thermogravimetric measurements were also used to learn about fine structural... (More)
An ultrasonically-enhanced mechanochemical method was developed to synthesize CaFe-layered double hydroxides (LDHs) with various interlayer anions (CO3 2−, NO3 −, ClO4 −, N3 −, F−, Cl−, Br− and I−). The duration of pre-milling and ultrasonic irradiation and the variation of synthesis temperature in the wet chemical step were investigated to obtain the optimal parameters of preparation. The main method to characterize the products was X-ray diffractometry, but infrared and synchrotron-based X-ray absorption spectroscopies as well as thermogravimetric measurements were also used to learn about fine structural details. The synthesis method afforded successful intercalation of the anions, among others the azide anion, a rarely used counter ion providing a system, which enables safe handling the otherwise highly reactive anion. The X-ray absorption spectroscopic measurements revealed that the quality of the interlayered anions could modulate the spatial arrangement of the calcium ions around the iron(III) ions, but only in the second coordination sphere.
(Less)
- author
- Szabados, Márton ; Varga, Gábor ; Kónya, Zoltán ; Kukovecz, Ákos ; Carlson, Stefan LU ; Sipos, Pál and Pálinkó, István
- organization
- publishing date
- 2018-01-01
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- CaFe-LDH, Interlayered halide, azide, oxo anions, Mechanochemical treatment, Ultrasonic irradiation, XAS−TG−IR
- in
- Ultrasonics Sonochemistry
- volume
- 40
- pages
- 8 pages
- publisher
- Elsevier
- external identifiers
-
- scopus:85028945308
- pmid:28946496
- ISSN
- 1350-4177
- DOI
- 10.1016/j.ultsonch.2017.08.041
- language
- English
- LU publication?
- yes
- id
- aa5f6b07-894a-4766-baaf-14ea03040be2
- date added to LUP
- 2017-10-06 12:06:36
- date last changed
- 2024-02-29 23:05:55
@article{aa5f6b07-894a-4766-baaf-14ea03040be2,
abstract = {{<p>An ultrasonically-enhanced mechanochemical method was developed to synthesize CaFe-layered double hydroxides (LDHs) with various interlayer anions (CO<sub>3</sub> <sup>2−</sup>, NO<sub>3</sub> <sup>−</sup>, ClO<sub>4</sub> <sup>−</sup>, N<sub>3</sub> <sup>−</sup>, F<sup>−</sup>, Cl<sup>−</sup>, Br<sup>−</sup> and I<sup>−</sup>). The duration of pre-milling and ultrasonic irradiation and the variation of synthesis temperature in the wet chemical step were investigated to obtain the optimal parameters of preparation. The main method to characterize the products was X-ray diffractometry, but infrared and synchrotron-based X-ray absorption spectroscopies as well as thermogravimetric measurements were also used to learn about fine structural details. The synthesis method afforded successful intercalation of the anions, among others the azide anion, a rarely used counter ion providing a system, which enables safe handling the otherwise highly reactive anion. The X-ray absorption spectroscopic measurements revealed that the quality of the interlayered anions could modulate the spatial arrangement of the calcium ions around the iron(III) ions, but only in the second coordination sphere.</p>}},
author = {{Szabados, Márton and Varga, Gábor and Kónya, Zoltán and Kukovecz, Ákos and Carlson, Stefan and Sipos, Pál and Pálinkó, István}},
issn = {{1350-4177}},
keywords = {{CaFe-LDH; Interlayered halide, azide, oxo anions; Mechanochemical treatment; Ultrasonic irradiation; XAS−TG−IR}},
language = {{eng}},
month = {{01}},
pages = {{853--860}},
publisher = {{Elsevier}},
series = {{Ultrasonics Sonochemistry}},
title = {{Ultrasonically-enhanced preparation, characterization of CaFe-layered double hydroxides with various interlayer halide, azide and oxo anions (CO<sub>3</sub> <sup>2−</sup>, NO<sub>3</sub> <sup>−</sup>, ClO<sub>4</sub> <sup>−</sup>)}},
url = {{http://dx.doi.org/10.1016/j.ultsonch.2017.08.041}},
doi = {{10.1016/j.ultsonch.2017.08.041}},
volume = {{40}},
year = {{2018}},
}