Iron oxide synthesis using a continuous hydrothermal and solvothermal system

Ming Tsai Liang, Shih Han Wang, Yu Lun Chang, Hsing I. Hsiang, Huang Jhe Huang, Meng Huan Tsai, Wen Cheng Juan, Shih Fu Lu

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34 Citations (Scopus)

Abstract

Iron oxide synthesis via a continuous hydrothermal and solvothermal reaction were studied. In the hydrothermal synthesis, fine α-Fe2O3 (hematite) particles were obtained at 250-420 °C and 30 MPa. The α-Fe2O3 crystals were grown in sub-critical water via a dissolution and precipitation process. The growth of α-Fe2O3 crystals in supercritical water was suppressed due to the rather low solvent power of water. Crystalline Fe3O4 was obtained as the temperature was raised above the supercritical state in the solvothermal preparation. Isopropanol (IPA) was oxidized in acetone which provided a reducing atmosphere. Acetone molecule adsorption onto the Fe3O4 particle surface inhibited crystallite growth.

Original languageEnglish
Pages (from-to)1131-1135
Number of pages5
JournalCeramics International
Volume36
Issue number3
DOIs
Publication statusPublished - 2010 Apr

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Process Chemistry and Technology
  • Surfaces, Coatings and Films
  • Materials Chemistry

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