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

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

doi:10.1380/ejssnt.2008.60

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 journal › Article › peer-review

Abstract

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 language	English
Pages (from-to)	60-63
Number of pages	4
Journal	e-Journal of Surface Science and Nanotechnology
Volume	6
DOIs	https://doi.org/10.1380/ejssnt.2008.60
Publication status	Published - 2008 Feb 16

Keywords

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

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10.1380/ejssnt.2008.60

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title = "Influence of anion coexistence on crystal structure of iron oxides deposited from steel surfaces",

abstract = "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.",

keywords = "Corrosion, Extended X-ray absorption fine structure (EXAFS), Nano-particles, X-ray diffraction",

author = "Kozo Shinoda and Kwon, {Sang Koo} and Shigeru Suzuki and Yoshio Waseda",

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TY - JOUR

T1 - Influence of anion coexistence on crystal structure of iron oxides deposited from steel surfaces

AU - Shinoda, Kozo

AU - Kwon, Sang Koo

AU - Suzuki, Shigeru

AU - Waseda, Yoshio

PY - 2008/2/16

Y1 - 2008/2/16

N2 - 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.

AB - 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.

KW - Corrosion

KW - Extended X-ray absorption fine structure (EXAFS)

KW - Nano-particles

KW - X-ray diffraction

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EP - 63

JO - e-Journal of Surface Science and Nanotechnology

JF - e-Journal of Surface Science and Nanotechnology

ER -

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

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Keywords

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