Synthesis and Atomic Characterization of a Ti2O3 Nanosheet

被引：28

作者：

Ohwada, Megumi ^{[1
]}

Kimoto, Koji ^{[1
]}

Suenaga, Kazutomo ^{[3
]}

Sato, Yuta ^{[3
]}

Ebina, Yasuo ^{[2
]}

Sasaki, Takayoshi ^{[2
]}

机构：

[1] Natl Inst Mat Sci, Surface Phys & Struct Unit, Tsukuba, Ibaraki, Japan

[2] Natl Inst Mat Sci, Int Ctr Mat Nanoarchitecton, Tsukuba, Ibaraki, Japan

[3] Natl Inst Adv Ind Sci & Technol, Nanotube Res Ctr, Tsukuba, Ibaraki, Japan

来源：

JOURNAL OF PHYSICAL CHEMISTRY LETTERS | 2011年 / 2卷 / 14期

基金：

日本科学技术振兴机构;

关键词：

TITANIA NANOSHEETS; CRYSTALLITES; OXIDES; SURFACES; TI;

D O I：

10.1021/jz200781u

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Titanium oxide nanosheets have been attracting much attention owing to their photocatalytic property. Here, we synthesized a Ti2O3 nanosheet by the reduction of a titania nanosheet (Ti0.87O2) 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.

引用

页码：1820 / 1823

页数：4

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