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

*この論文の責任著者

研究成果: ジャーナルへの寄稿学術論文査読

28 被引用数 (Scopus)

抄録

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.

本文言語英語
ページ(範囲)168-174
ページ数7
ジャーナルMaterials Science in Semiconductor Processing
12
4-5
DOI
出版ステータス出版済み - 2009/08

ASJC Scopus 主題領域

  • 材料科学一般
  • 凝縮系物理学
  • 材料力学
  • 機械工学

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