Synthesis and atomic characterization of a Ti2O3 Nanosheet

Megumi Ohwada; Koji Kimoto; Kazutomo Suenaga; Yuta Sato; Yasuo Ebina; Takayoshi Sasaki

doi:10.1021/jz200781u

Synthesis and atomic characterization of a Ti₂O₃ Nanosheet

Megumi Ohwada, Koji Kimoto, Kazutomo Suenaga, Yuta Sato, Yasuo Ebina, Takayoshi Sasaki

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

24 Citations (Scopus)

Abstract

Titanium oxide nanosheets have been attracting much attention owing to their photocatalytic property. Here, we synthesized a Ti₂O ₃ nanosheet by the reduction of a titania nanosheet (Ti _0.87O₂) that was one or two atoms in thickness. The atomic structure of the Ti₂O₃ nanosheet was quantitatively revealed by electron diffraction analysis, electron energy-loss spectroscopy, and high-resolution transmission electron microscopy (TEM). A titania nanosheet (Ti_0.87O₂) consisting of edge-shared TiO₆ octahedra was transformed to a Ti₂O₃ nanosheet consisting of face-shared octahedra by electron beam irradiation. This represents a stable crystal phase of titania nanosheets like the Magneli phase in oxygen-deficient environments. The atomic arrangement of the Ti₂O₃ nanosheet was directly observed by newly developed aberration-corrected TEM.

Original language	English
Pages (from-to)	1820-1823
Number of pages	4
Journal	Journal of Physical Chemistry Letters
Volume	2
Issue number	14
DOIs	https://doi.org/10.1021/jz200781u
Publication status	Published - 2011 Jul 21
Externally published	Yes

ASJC Scopus subject areas

Materials Science(all)
Physical and Theoretical Chemistry

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10.1021/jz200781u

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abstract = "Titanium oxide nanosheets have been attracting much attention owing to their photocatalytic property. Here, we synthesized a Ti2O 3 nanosheet by the reduction of a titania nanosheet (Ti 0.87O2) that was one or two atoms in thickness. The atomic structure of the Ti2O3 nanosheet was quantitatively revealed by electron diffraction analysis, electron energy-loss spectroscopy, and high-resolution transmission electron microscopy (TEM). A titania nanosheet (Ti0.87O2) consisting of edge-shared TiO6 octahedra was transformed to a Ti2O3 nanosheet consisting of face-shared octahedra by electron beam irradiation. This represents a stable crystal phase of titania nanosheets like the Magneli phase in oxygen-deficient environments. The atomic arrangement of the Ti2O3 nanosheet was directly observed by newly developed aberration-corrected TEM.",

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AU - Ohwada, Megumi

AU - Kimoto, Koji

AU - Suenaga, Kazutomo

AU - Sato, Yuta

AU - Ebina, Yasuo

AU - Sasaki, Takayoshi

PY - 2011/7/21

Y1 - 2011/7/21

N2 - Titanium oxide nanosheets have been attracting much attention owing to their photocatalytic property. Here, we synthesized a Ti2O 3 nanosheet by the reduction of a titania nanosheet (Ti 0.87O2) that was one or two atoms in thickness. The atomic structure of the Ti2O3 nanosheet was quantitatively revealed by electron diffraction analysis, electron energy-loss spectroscopy, and high-resolution transmission electron microscopy (TEM). A titania nanosheet (Ti0.87O2) consisting of edge-shared TiO6 octahedra was transformed to a Ti2O3 nanosheet consisting of face-shared octahedra by electron beam irradiation. This represents a stable crystal phase of titania nanosheets like the Magneli phase in oxygen-deficient environments. The atomic arrangement of the Ti2O3 nanosheet was directly observed by newly developed aberration-corrected TEM.

AB - Titanium oxide nanosheets have been attracting much attention owing to their photocatalytic property. Here, we synthesized a Ti2O 3 nanosheet by the reduction of a titania nanosheet (Ti 0.87O2) that was one or two atoms in thickness. The atomic structure of the Ti2O3 nanosheet was quantitatively revealed by electron diffraction analysis, electron energy-loss spectroscopy, and high-resolution transmission electron microscopy (TEM). A titania nanosheet (Ti0.87O2) consisting of edge-shared TiO6 octahedra was transformed to a Ti2O3 nanosheet consisting of face-shared octahedra by electron beam irradiation. This represents a stable crystal phase of titania nanosheets like the Magneli phase in oxygen-deficient environments. The atomic arrangement of the Ti2O3 nanosheet was directly observed by newly developed aberration-corrected TEM.

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Synthesis and atomic characterization of a Ti₂O₃ Nanosheet

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