Direct observation of TiO6 octahedron forming titanate nanotube by advanced transmission electron microscopy.
The nanostructure of titanate nanotubes known as a one-dimensional catalytic/electric subject is combinatorially characterized using x-ray diffraction (XRD), micro-Raman, photoluminescence (PL) and advanced electron microscopy. The micro-Raman and PL spectra prove the successful synthesis of TiO6 octahedron units in macroscopic scale. Cryo-high-angle annular dark-field (HAADF)-STEM and aberration-corrected (AC) TEM visualize in real-space the TiO6 octahedron unit formed as a TiO2-based tubular structure prepared by the alkaline hydrothermal methods. The chirality and scrolling-up mechanism of the TiO6 octahedron nanosheets in relation to an asymmetrical chemical environment and mechanical tensions are discussed.
Yoshida
K
K
Department of Crystalline Materials Science and Ecotopia Science Institute, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan. ky512@york.ac.uk
Miao
L
L
Tanaka
N
N
Tanemura
S
S
D017348:Microscopy, Electron, Scanning Transmission; D046529:Microscopy, Electron, Transmission; D043942:Nanotubes / Q000737:chemistry* / Q000648:ultrastructure*; D014025:Titanium / Q000737:chemistry*; D014961:X-Ray Diffraction
D014025:Titanium