Synthesis and characterization of new iron(III) layered hydroxides

Tsutomu Katamoto, Hideki Hashimoto, Tatsuo Fujii, Jun Takada

Research output: Contribution to journalArticlepeer-review

Abstract

A new layered iron hydroxide was synthesized by a wet chemical technique, by which aqueous ferrous sulfate solution was gradually oxidized by using sodium carbonate at 283 ∼ 333 K. Obtained yellowish precipitates identified by X-ray powder diffraction had a similar structure to the layered double hydroxides. The observed interlayer spacing was about d=0.74 nm. Electron micrographs showed that the particles had plate-like morphology. Electron diffraction pattern of the plate-like particles had hexagonal symmetry, when the electron beam was aligned normal to the planes. Mössbauer spectrum suggested that all iron ions were paramagnetic Fe3+ states with large quadrupole splittings at room temperature. These results show that the obtained new layered iron hydroxide cotains only Fe(III) ion species. Water vapor adsorption curves of the sample oxidized át 291 K showed high adsorption value (19 wt%) by unit weight.

Original languageEnglish
Pages (from-to)76-83
Number of pages8
JournalFuntai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy
Volume57
Issue number2
DOIs
Publication statusPublished - Feb 2010

Keywords

  • Iron hydroxide
  • Layered double hydroxide
  • Mössbauer analysis
  • Tem observation
  • Water vapor adsorption
  • Wet chemical synthesis

ASJC Scopus subject areas

  • Mechanical Engineering
  • Industrial and Manufacturing Engineering
  • Metals and Alloys
  • Materials Chemistry

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