Decomposition mechanism of methylene blue caused by metallic iron-maghemite mixture

Shiro Kubuki, Koya Shibano, Kazuhiko Akiyama, Z. Homonnay, E. Kuzmann, Mira Ristić, Tetsuaki Nishida

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

Decomposition mechanism of methylene blue (MB) caused by a mixture of metallic iron-maghemite (Fe0-γFe2O3) was investigated by means of 57Fe-Mössbauer spectroscopy, X-ray diffractometry (XRD), Ultraviolet-Visible Absorption Spectroscopy (UV-vis) and electrospray-ionization mass spectroscopy (ESI-MS). Ten day-leaching test of 10 μmol L- 1 MB aqueous solution and Fe0-γFe2O3 mixture (mass ratio 3:7) showed a decrease in the concentration from 10. 5 to 4. 45 μmol L- 1 with first-order rate constant (k) of 1.57 × 10 - 1 day -1. An ESI-MS study of Fe0-γFe2O3 mixture (3:7) after the leaching test revealed new peaks at m/z of 100, 110 and 137 due to fragmentation of MB, in addition to those observed at m/z of 284, 270 and 256 which were ascribed to MB, Azure B and Azure A, respectively. 57Fe-Mössbauer spectra of Fe0-γFe2O3 mixture (3:7) resulted in a decrease in absorption area (A) for Fe0 (δ = 0. 00±0. 01 mm s- 1, Hint = 33. 0±0. 1 T) from 37. 5 to 21. 3, 9. 7, 7. 9, 7. 0 and 4. 5±0. 5 %, together with an increase in A from 0. 0 to 5. 0, 13. 8, 17. 2, 21. 0 and 22. 4±0. 5 % for octahedral (Oh) iron (FeII + FeIII) of Fe3O4. XRD study of these samples indicated that the peak intensity at 2Θ of 44. 7° being ascribed to Fe0 was decreased, while that of 35. 6° due to Fe3O4 was almost constant; relative peak ratio of Fe0/Fe3O4 was decreased from 26. 3 to 2. 76 after the leaching, indicating that Fe0 in the Fe0-γFe2O3 mixture was oxidized to Fe3O4. These experimental results suggest that Fe0-γFe2O3 mixture could be utilized for the cleaning or decomposition of toxic organic compounds like trichloroethylene.

Original languageEnglish
Pages (from-to)47-52
Number of pages6
JournalHyperfine Interactions
Volume218
Issue number1-3
DOIs
Publication statusPublished - 2013

Fingerprint

Methylene Blue
methylene blue
Iron
Decomposition
decomposition
iron
leaching
Leaching
Electrospray ionization
X ray diffraction analysis
mass spectroscopy
Spectroscopy
trichloroethylene
Trichloroethylene
ionization
Poisons
Absorption spectroscopy
organic compounds
Organic compounds
mass ratios

Keywords

  • Fe-Mössbauer spectroscopy
  • Electrospray ionization mass spectrometry (ESI-MS)
  • Maghemite
  • Metallic iron
  • Methylene blue (MB) decomposition
  • Ultraviolet-Visible Absorption Spectroscopy (UV-vis)

ASJC Scopus subject areas

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

Cite this

Decomposition mechanism of methylene blue caused by metallic iron-maghemite mixture. / Kubuki, Shiro; Shibano, Koya; Akiyama, Kazuhiko; Homonnay, Z.; Kuzmann, E.; Ristić, Mira; Nishida, Tetsuaki.

In: Hyperfine Interactions, Vol. 218, No. 1-3, 2013, p. 47-52.

Research output: Contribution to journalArticle

Kubuki, Shiro ; Shibano, Koya ; Akiyama, Kazuhiko ; Homonnay, Z. ; Kuzmann, E. ; Ristić, Mira ; Nishida, Tetsuaki. / Decomposition mechanism of methylene blue caused by metallic iron-maghemite mixture. In: Hyperfine Interactions. 2013 ; Vol. 218, No. 1-3. pp. 47-52.
@article{24139ef041f24ba8b3ae0ccad0f585f5,
title = "Decomposition mechanism of methylene blue caused by metallic iron-maghemite mixture",
abstract = "Decomposition mechanism of methylene blue (MB) caused by a mixture of metallic iron-maghemite (Fe0-γFe2O3) was investigated by means of 57Fe-M{\"o}ssbauer spectroscopy, X-ray diffractometry (XRD), Ultraviolet-Visible Absorption Spectroscopy (UV-vis) and electrospray-ionization mass spectroscopy (ESI-MS). Ten day-leaching test of 10 μmol L- 1 MB aqueous solution and Fe0-γFe2O3 mixture (mass ratio 3:7) showed a decrease in the concentration from 10. 5 to 4. 45 μmol L- 1 with first-order rate constant (k) of 1.57 × 10 - 1 day -1. An ESI-MS study of Fe0-γFe2O3 mixture (3:7) after the leaching test revealed new peaks at m/z of 100, 110 and 137 due to fragmentation of MB, in addition to those observed at m/z of 284, 270 and 256 which were ascribed to MB, Azure B and Azure A, respectively. 57Fe-M{\"o}ssbauer spectra of Fe0-γFe2O3 mixture (3:7) resulted in a decrease in absorption area (A) for Fe0 (δ = 0. 00±0. 01 mm s- 1, Hint = 33. 0±0. 1 T) from 37. 5 to 21. 3, 9. 7, 7. 9, 7. 0 and 4. 5±0. 5 {\%}, together with an increase in A from 0. 0 to 5. 0, 13. 8, 17. 2, 21. 0 and 22. 4±0. 5 {\%} for octahedral (Oh) iron (FeII + FeIII) of Fe3O4. XRD study of these samples indicated that the peak intensity at 2Θ of 44. 7° being ascribed to Fe0 was decreased, while that of 35. 6° due to Fe3O4 was almost constant; relative peak ratio of Fe0/Fe3O4 was decreased from 26. 3 to 2. 76 after the leaching, indicating that Fe0 in the Fe0-γFe2O3 mixture was oxidized to Fe3O4. These experimental results suggest that Fe0-γFe2O3 mixture could be utilized for the cleaning or decomposition of toxic organic compounds like trichloroethylene.",
keywords = "Fe-M{\"o}ssbauer spectroscopy, Electrospray ionization mass spectrometry (ESI-MS), Maghemite, Metallic iron, Methylene blue (MB) decomposition, Ultraviolet-Visible Absorption Spectroscopy (UV-vis)",
author = "Shiro Kubuki and Koya Shibano and Kazuhiko Akiyama and Z. Homonnay and E. Kuzmann and Mira Ristić and Tetsuaki Nishida",
year = "2013",
doi = "10.1007/s10751-012-0672-x",
language = "English",
volume = "218",
pages = "47--52",
journal = "Hyperfine Interaction",
issn = "0304-3843",
publisher = "Springer Netherlands",
number = "1-3",

}

TY - JOUR

T1 - Decomposition mechanism of methylene blue caused by metallic iron-maghemite mixture

AU - Kubuki, Shiro

AU - Shibano, Koya

AU - Akiyama, Kazuhiko

AU - Homonnay, Z.

AU - Kuzmann, E.

AU - Ristić, Mira

AU - Nishida, Tetsuaki

PY - 2013

Y1 - 2013

N2 - Decomposition mechanism of methylene blue (MB) caused by a mixture of metallic iron-maghemite (Fe0-γFe2O3) was investigated by means of 57Fe-Mössbauer spectroscopy, X-ray diffractometry (XRD), Ultraviolet-Visible Absorption Spectroscopy (UV-vis) and electrospray-ionization mass spectroscopy (ESI-MS). Ten day-leaching test of 10 μmol L- 1 MB aqueous solution and Fe0-γFe2O3 mixture (mass ratio 3:7) showed a decrease in the concentration from 10. 5 to 4. 45 μmol L- 1 with first-order rate constant (k) of 1.57 × 10 - 1 day -1. An ESI-MS study of Fe0-γFe2O3 mixture (3:7) after the leaching test revealed new peaks at m/z of 100, 110 and 137 due to fragmentation of MB, in addition to those observed at m/z of 284, 270 and 256 which were ascribed to MB, Azure B and Azure A, respectively. 57Fe-Mössbauer spectra of Fe0-γFe2O3 mixture (3:7) resulted in a decrease in absorption area (A) for Fe0 (δ = 0. 00±0. 01 mm s- 1, Hint = 33. 0±0. 1 T) from 37. 5 to 21. 3, 9. 7, 7. 9, 7. 0 and 4. 5±0. 5 %, together with an increase in A from 0. 0 to 5. 0, 13. 8, 17. 2, 21. 0 and 22. 4±0. 5 % for octahedral (Oh) iron (FeII + FeIII) of Fe3O4. XRD study of these samples indicated that the peak intensity at 2Θ of 44. 7° being ascribed to Fe0 was decreased, while that of 35. 6° due to Fe3O4 was almost constant; relative peak ratio of Fe0/Fe3O4 was decreased from 26. 3 to 2. 76 after the leaching, indicating that Fe0 in the Fe0-γFe2O3 mixture was oxidized to Fe3O4. These experimental results suggest that Fe0-γFe2O3 mixture could be utilized for the cleaning or decomposition of toxic organic compounds like trichloroethylene.

AB - Decomposition mechanism of methylene blue (MB) caused by a mixture of metallic iron-maghemite (Fe0-γFe2O3) was investigated by means of 57Fe-Mössbauer spectroscopy, X-ray diffractometry (XRD), Ultraviolet-Visible Absorption Spectroscopy (UV-vis) and electrospray-ionization mass spectroscopy (ESI-MS). Ten day-leaching test of 10 μmol L- 1 MB aqueous solution and Fe0-γFe2O3 mixture (mass ratio 3:7) showed a decrease in the concentration from 10. 5 to 4. 45 μmol L- 1 with first-order rate constant (k) of 1.57 × 10 - 1 day -1. An ESI-MS study of Fe0-γFe2O3 mixture (3:7) after the leaching test revealed new peaks at m/z of 100, 110 and 137 due to fragmentation of MB, in addition to those observed at m/z of 284, 270 and 256 which were ascribed to MB, Azure B and Azure A, respectively. 57Fe-Mössbauer spectra of Fe0-γFe2O3 mixture (3:7) resulted in a decrease in absorption area (A) for Fe0 (δ = 0. 00±0. 01 mm s- 1, Hint = 33. 0±0. 1 T) from 37. 5 to 21. 3, 9. 7, 7. 9, 7. 0 and 4. 5±0. 5 %, together with an increase in A from 0. 0 to 5. 0, 13. 8, 17. 2, 21. 0 and 22. 4±0. 5 % for octahedral (Oh) iron (FeII + FeIII) of Fe3O4. XRD study of these samples indicated that the peak intensity at 2Θ of 44. 7° being ascribed to Fe0 was decreased, while that of 35. 6° due to Fe3O4 was almost constant; relative peak ratio of Fe0/Fe3O4 was decreased from 26. 3 to 2. 76 after the leaching, indicating that Fe0 in the Fe0-γFe2O3 mixture was oxidized to Fe3O4. These experimental results suggest that Fe0-γFe2O3 mixture could be utilized for the cleaning or decomposition of toxic organic compounds like trichloroethylene.

KW - Fe-Mössbauer spectroscopy

KW - Electrospray ionization mass spectrometry (ESI-MS)

KW - Maghemite

KW - Metallic iron

KW - Methylene blue (MB) decomposition

KW - Ultraviolet-Visible Absorption Spectroscopy (UV-vis)

UR - http://www.scopus.com/inward/record.url?scp=84876194175&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84876194175&partnerID=8YFLogxK

U2 - 10.1007/s10751-012-0672-x

DO - 10.1007/s10751-012-0672-x

M3 - Article

AN - SCOPUS:84876194175

VL - 218

SP - 47

EP - 52

JO - Hyperfine Interaction

JF - Hyperfine Interaction

SN - 0304-3843

IS - 1-3

ER -