Influence of anion coexistence on crystal structure of iron oxides deposited from steel surfaces

Kozo Shinoda, Sang Koo Kwon, Shigeru Suzuki, Yoshio Waseda

Research output: Contribution to journalArticlepeer-review


The EXAFS analysis of ferric oxide particles precipitated from ferric aqueous solutions including chloride ion and with/without additional anions such as sulfate or silicate. In the solution reaction process, an akaganeite (β-FeOOH)-like oxyhydroxide with low crystallinity is precipitated and subsequently transforms to hematite (QFe2O3). Coexistence of anion species of sulfate or silicate is effective to reduce the rate of structural transformation and influence morphology of final iron oxide products. The radial distribution functions was obtained by Fourier transformation from EXAFS spectra measured at Fe K absorption edge, and Debye-Waller factor related to Fe-Fe correlation was determined. The results indicated that the linkages with face-sharing and double-corner-sharing were influenced by adding anions in corrosion reaction solutions.

Original languageEnglish
Pages (from-to)60-63
Number of pages4
Journale-Journal of Surface Science and Nanotechnology
Publication statusPublished - 2008 Feb 16


  • Corrosion
  • Extended X-ray absorption fine structure (EXAFS)
  • Nano-particles
  • X-ray diffraction

ASJC Scopus subject areas

  • Biotechnology
  • Bioengineering
  • Condensed Matter Physics
  • Mechanics of Materials
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films


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