Anatase nanocrystals with {103} and {112} facets by hydrothermal transformation of titanate nanotubes
Anatase nanocrystals with {103} and {112} facets by hydrothermal transformation of titanate nanotubes
- Author(s): Zheng Chen ; Graham Dawson ; Jinghai Liu ; Kai Dai
- DOI: 10.1049/mnl.2011.0267
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- Author(s): Zheng Chen 1 ; Graham Dawson 1 ; Jinghai Liu 1 ; Kai Dai 2
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View affiliations
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Affiliations:
1: Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou, People's Republic of China
2: School of Physics and Electric Information, Huaibei Normal University, Huaibei, People's Republic of China
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Affiliations:
1: Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou, People's Republic of China
- Source:
Volume 6, Issue 8,
August 2011,
p.
675 – 677
DOI: 10.1049/mnl.2011.0267 , Online ISSN 1750-0443
Well-faceted anatase nanocrystals were prepared via phase transition of titanate nanotubes by hydrothermal treatment at high pH (>10). The three-dimensional morphology and facets of these anatase nanocrystals were investigated. When the pH value was increased to 11.5 or higher, novel nanocrystals with a tail-fin-like structure on one side were found in the product. The facets of the tail-fin-like nanocrystal were investigated by high resolution transmission electron microscopy with a tilt-rotate holder. Based on the morphologies, corresponding crystal orientations and the knowledge of crystallography, the facets of the tail-fin-like nanocrystal were determined to be {103}, {101} and {112}. The formation mechanism of these nanocrystals was also discussed.
Inspec keywords: semiconductor nanotubes; nanofabrication; pH; titanium compounds; crystal orientation; crystal growth from solution; nanostructured materials; solid-state phase transformations; transmission electron microscopy; crystal morphology
Other keywords:
Subjects: Oxide and ferrite semiconductors; Structure of solid clusters, nanoparticles, nanotubes and nanostructured materials; Crystal growth; Solid-solid transitions; Methods of nanofabrication and processing; Crystal growth from solution; Nanometre-scale semiconductor fabrication technology; Electrochemistry and electrophoresis; Crystal morphology and orientation; Constant-composition solid-solid phase transformations: polymorphic, massive, and order-disorder
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