Phase transformation of anatase-rutile crystals in doped and undoped TiO2 particles obtained by the oxidation of polycrystalline sulfide

Mst Shamsun Nahar; Jing Zhang; Kiyoshi Hasegawa; Shigehiro Kagaya; Shigeyasu Kuroda

doi:10.1016/j.mssp.2009.09.011

Phase transformation of anatase-rutile crystals in doped and undoped TiO₂ particles obtained by the oxidation of polycrystalline sulfide

Mst Shamsun Nahar^*, Jing Zhang, Kiyoshi Hasegawa, Shigehiro Kagaya, Shigeyasu Kuroda

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

28 Scopus citations

Abstract

The anatase-rutile phase transformation of doped and undoped TiO₂ is discussed on the basis of crystal chemistry and the photoelectric oxidation properties of the mixture phase using different parameters. The X-ray diffraction (XRD) results confirm that temperature and time affect the anatase-rutile transformation, whereas the Fe-dopant concentrations had no effect on the anatase-rutile transformation. Field Emission Scanning Electron Microscope (FE-SEM) studies also indicate the presence of single anatase and anatase-rutile mixed phase structures on the surface of TiO₂. X-ray photoelectron spectroscopy (XPS) was used to investigate the Ti state in the final product. The coexistence of the anatase-rutile mixture in TiO₂ particles caused significant light absorption and higher degradation efficiency by the synergism between rutile and anatase particles.

Original language	English
Pages (from-to)	168-174
Number of pages	7
Journal	Materials Science in Semiconductor Processing
Volume	12
Issue number	4-5
DOIs	https://doi.org/10.1016/j.mssp.2009.09.011
State	Published - 2009/08

Keywords

Crystallization
Optical properties
Semiconductor
TiO
XPS

ASJC Scopus subject areas

General Materials Science
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

Access to Document

10.1016/j.mssp.2009.09.011

Cite this

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title = "Phase transformation of anatase-rutile crystals in doped and undoped TiO2 particles obtained by the oxidation of polycrystalline sulfide",

abstract = "The anatase-rutile phase transformation of doped and undoped TiO2 is discussed on the basis of crystal chemistry and the photoelectric oxidation properties of the mixture phase using different parameters. The X-ray diffraction (XRD) results confirm that temperature and time affect the anatase-rutile transformation, whereas the Fe-dopant concentrations had no effect on the anatase-rutile transformation. Field Emission Scanning Electron Microscope (FE-SEM) studies also indicate the presence of single anatase and anatase-rutile mixed phase structures on the surface of TiO2. X-ray photoelectron spectroscopy (XPS) was used to investigate the Ti state in the final product. The coexistence of the anatase-rutile mixture in TiO2 particles caused significant light absorption and higher degradation efficiency by the synergism between rutile and anatase particles.",

keywords = "Crystallization, Optical properties, Semiconductor, TiO, XPS",

author = "Nahar, {Mst Shamsun} and Jing Zhang and Kiyoshi Hasegawa and Shigehiro Kagaya and Shigeyasu Kuroda",

year = "2009",

month = aug,

doi = "10.1016/j.mssp.2009.09.011",

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volume = "12",

pages = "168--174",

journal = "Materials Science in Semiconductor Processing",

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T1 - Phase transformation of anatase-rutile crystals in doped and undoped TiO2 particles obtained by the oxidation of polycrystalline sulfide

AU - Nahar, Mst Shamsun

AU - Zhang, Jing

AU - Hasegawa, Kiyoshi

AU - Kagaya, Shigehiro

AU - Kuroda, Shigeyasu

PY - 2009/8

Y1 - 2009/8

N2 - The anatase-rutile phase transformation of doped and undoped TiO2 is discussed on the basis of crystal chemistry and the photoelectric oxidation properties of the mixture phase using different parameters. The X-ray diffraction (XRD) results confirm that temperature and time affect the anatase-rutile transformation, whereas the Fe-dopant concentrations had no effect on the anatase-rutile transformation. Field Emission Scanning Electron Microscope (FE-SEM) studies also indicate the presence of single anatase and anatase-rutile mixed phase structures on the surface of TiO2. X-ray photoelectron spectroscopy (XPS) was used to investigate the Ti state in the final product. The coexistence of the anatase-rutile mixture in TiO2 particles caused significant light absorption and higher degradation efficiency by the synergism between rutile and anatase particles.

AB - The anatase-rutile phase transformation of doped and undoped TiO2 is discussed on the basis of crystal chemistry and the photoelectric oxidation properties of the mixture phase using different parameters. The X-ray diffraction (XRD) results confirm that temperature and time affect the anatase-rutile transformation, whereas the Fe-dopant concentrations had no effect on the anatase-rutile transformation. Field Emission Scanning Electron Microscope (FE-SEM) studies also indicate the presence of single anatase and anatase-rutile mixed phase structures on the surface of TiO2. X-ray photoelectron spectroscopy (XPS) was used to investigate the Ti state in the final product. The coexistence of the anatase-rutile mixture in TiO2 particles caused significant light absorption and higher degradation efficiency by the synergism between rutile and anatase particles.

KW - Crystallization

KW - Optical properties

KW - Semiconductor

KW - TiO

KW - XPS

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