Mössbauer and XRD investigations of layered double hydroxides (LDHs) with varying Mg/Fe ratios

Mónika Sipiczki, E. Kuzmann, Z. Homonnay, József Megyeri, Krisztina Kovács, I. Pálinkó, P. Sipos

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

The effects of the Mg(II)/Fe(III) ratio on the structure and Fe microenvironments in MgFe LDH substances were investigated. The LDHs were prepared by the co-precipitation method with Mg(II)/Fe(III) ratios from 2:1 to 6:1. The materials were characterized by 57Fe Mössbauer spectroscopy and powder X-ray diffractometry. The 57Fe Mössbauer spectra exhibited asymmetric doublet corresponding to high-spin Fe(III) microenvironments in all LDH structure. It was found that the quadrupole splitting decreased with increasing Mg(II)/Fe(III)ratio reflecting change in the electric field gradient due to the incorporation of different amounts of iron into the Mg-containing layers.

Original languageEnglish
Pages (from-to)145-149
Number of pages5
JournalHyperfine Interactions
Volume217
Issue number1-3
DOIs
Publication statusPublished - 2013

Fingerprint

Hydroxides
hydroxides
Coprecipitation
Powders
X ray diffraction analysis
Iron
quadrupoles
Electric fields
Spectroscopy
iron
gradients
electric fields
spectroscopy
x rays

Keywords

  • Fe Mössbauer spectroscopy
  • Mg/Fe ratios
  • MgFe-LDH
  • XRD measurements

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Nuclear and High Energy Physics
  • Atomic and Molecular Physics, and Optics
  • Physical and Theoretical Chemistry

Cite this

Mössbauer and XRD investigations of layered double hydroxides (LDHs) with varying Mg/Fe ratios. / Sipiczki, Mónika; Kuzmann, E.; Homonnay, Z.; Megyeri, József; Kovács, Krisztina; Pálinkó, I.; Sipos, P.

In: Hyperfine Interactions, Vol. 217, No. 1-3, 2013, p. 145-149.

Research output: Contribution to journalArticle

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AU - Sipiczki, Mónika

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AU - Megyeri, József

AU - Kovács, Krisztina

AU - Pálinkó, I.

AU - Sipos, P.

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AB - The effects of the Mg(II)/Fe(III) ratio on the structure and Fe microenvironments in MgFe LDH substances were investigated. The LDHs were prepared by the co-precipitation method with Mg(II)/Fe(III) ratios from 2:1 to 6:1. The materials were characterized by 57Fe Mössbauer spectroscopy and powder X-ray diffractometry. The 57Fe Mössbauer spectra exhibited asymmetric doublet corresponding to high-spin Fe(III) microenvironments in all LDH structure. It was found that the quadrupole splitting decreased with increasing Mg(II)/Fe(III)ratio reflecting change in the electric field gradient due to the incorporation of different amounts of iron into the Mg-containing layers.

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