Sulfurization of hematite Fe2O3 and anatase TiO2 by annealing in H2S

Woo Jung Shin, Araceli Hernández Granados, Wen Hsi Huang, Hailin Hu, Meng Tao

Research output: Contribution to journalArticle

Abstract

Spray-deposited hematite Fe2O3 and spin-coated anatase TiO2 thin films were annealed under H2S in order to investigate the effect of sulfurization by H2S. Sulfurized films were characterized using UV–vis spectrophotometry, X-ray diffractometry, Raman spectroscopy, field-emission scanning electron microscopy, and energy-dispersive X-ray spectroscopy. Sulfurized Fe2O3 and TiO2 films are composed of multiple phases. The Fe2O3 film undergoes phase transformation from hematite into a mixture of magnetite (Fe3O4) and pyrrhotite (FeS) at annealing temperatures above 250 °C. At 450 °C α-Fe2O3 is fully transformed into pyrite (FeS2). The TiO2 film transforms into a mixture of TiO2 and TiS2. TiS2 formation begins at temperatures above 550 °C. At 700 °C, TiO2 is completely transformed into TiS2.

LanguageEnglish (US)
Pages152-158
Number of pages7
JournalMaterials Chemistry and Physics
Volume222
DOIs
StatePublished - Jan 15 2019

Fingerprint

Hematite
hematite
anatase
Titanium dioxide
Annealing
annealing
Ferrosoferric Oxide
pyrrhotite
Pyrites
Spectrophotometry
Magnetite
pyrites
spectrophotometry
Field emission
magnetite
X ray diffraction analysis
sprayers
phase transformations
Raman spectroscopy
field emission

Keywords

  • Anatase TiO2
  • H2S
  • Hematite Fe2O3
  • Sulfurization

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics

Cite this

Sulfurization of hematite Fe2O3 and anatase TiO2 by annealing in H2S. / Shin, Woo Jung; Granados, Araceli Hernández; Huang, Wen Hsi; Hu, Hailin; Tao, Meng.

In: Materials Chemistry and Physics, Vol. 222, 15.01.2019, p. 152-158.

Research output: Contribution to journalArticle

Shin, Woo Jung ; Granados, Araceli Hernández ; Huang, Wen Hsi ; Hu, Hailin ; Tao, Meng. / Sulfurization of hematite Fe2O3 and anatase TiO2 by annealing in H2S. In: Materials Chemistry and Physics. 2019 ; Vol. 222. pp. 152-158.
@article{65f36e63ebb34deab724c78cd4e4027b,
title = "Sulfurization of hematite Fe2O3 and anatase TiO2 by annealing in H2S",
abstract = "Spray-deposited hematite Fe2O3 and spin-coated anatase TiO2 thin films were annealed under H2S in order to investigate the effect of sulfurization by H2S. Sulfurized films were characterized using UV–vis spectrophotometry, X-ray diffractometry, Raman spectroscopy, field-emission scanning electron microscopy, and energy-dispersive X-ray spectroscopy. Sulfurized Fe2O3 and TiO2 films are composed of multiple phases. The Fe2O3 film undergoes phase transformation from hematite into a mixture of magnetite (Fe3O4) and pyrrhotite (FeS) at annealing temperatures above 250 °C. At 450 °C α-Fe2O3 is fully transformed into pyrite (FeS2). The TiO2 film transforms into a mixture of TiO2 and TiS2. TiS2 formation begins at temperatures above 550 °C. At 700 °C, TiO2 is completely transformed into TiS2.",
keywords = "Anatase TiO2, H2S, Hematite Fe2O3, Sulfurization",
author = "Shin, {Woo Jung} and Granados, {Araceli Hern{\'a}ndez} and Huang, {Wen Hsi} and Hailin Hu and Meng Tao",
year = "2019",
month = "1",
day = "15",
doi = "10.1016/j.matchemphys.2018.10.008",
language = "English (US)",
volume = "222",
pages = "152--158",
journal = "Materials Chemistry and Physics",
issn = "0254-0584",
publisher = "Elsevier BV",

}

TY - JOUR

T1 - Sulfurization of hematite Fe2O3 and anatase TiO2 by annealing in H2S

AU - Shin, Woo Jung

AU - Granados, Araceli Hernández

AU - Huang, Wen Hsi

AU - Hu, Hailin

AU - Tao, Meng

PY - 2019/1/15

Y1 - 2019/1/15

N2 - Spray-deposited hematite Fe2O3 and spin-coated anatase TiO2 thin films were annealed under H2S in order to investigate the effect of sulfurization by H2S. Sulfurized films were characterized using UV–vis spectrophotometry, X-ray diffractometry, Raman spectroscopy, field-emission scanning electron microscopy, and energy-dispersive X-ray spectroscopy. Sulfurized Fe2O3 and TiO2 films are composed of multiple phases. The Fe2O3 film undergoes phase transformation from hematite into a mixture of magnetite (Fe3O4) and pyrrhotite (FeS) at annealing temperatures above 250 °C. At 450 °C α-Fe2O3 is fully transformed into pyrite (FeS2). The TiO2 film transforms into a mixture of TiO2 and TiS2. TiS2 formation begins at temperatures above 550 °C. At 700 °C, TiO2 is completely transformed into TiS2.

AB - Spray-deposited hematite Fe2O3 and spin-coated anatase TiO2 thin films were annealed under H2S in order to investigate the effect of sulfurization by H2S. Sulfurized films were characterized using UV–vis spectrophotometry, X-ray diffractometry, Raman spectroscopy, field-emission scanning electron microscopy, and energy-dispersive X-ray spectroscopy. Sulfurized Fe2O3 and TiO2 films are composed of multiple phases. The Fe2O3 film undergoes phase transformation from hematite into a mixture of magnetite (Fe3O4) and pyrrhotite (FeS) at annealing temperatures above 250 °C. At 450 °C α-Fe2O3 is fully transformed into pyrite (FeS2). The TiO2 film transforms into a mixture of TiO2 and TiS2. TiS2 formation begins at temperatures above 550 °C. At 700 °C, TiO2 is completely transformed into TiS2.

KW - Anatase TiO2

KW - H2S

KW - Hematite Fe2O3

KW - Sulfurization

UR - http://www.scopus.com/inward/record.url?scp=85056167509&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85056167509&partnerID=8YFLogxK

U2 - 10.1016/j.matchemphys.2018.10.008

DO - 10.1016/j.matchemphys.2018.10.008

M3 - Article

VL - 222

SP - 152

EP - 158

JO - Materials Chemistry and Physics

T2 - Materials Chemistry and Physics

JF - Materials Chemistry and Physics

SN - 0254-0584

ER -