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  • A facile vapor-phase hydrothermal method for direct growth of titanate nanotubes on titanium substrate via a distinctive nanosheet roll-up mechanism

    Author(s)
    Liu, Porun
    Zhang, Haimin
    Liu, Hongwei
    Wang, Yun
    Yao, Xiangdong
    Zhu, Guangshan
    Zhang, Shanqing
    Zhao, Huijun
    Griffith University Author(s)
    Zhao, Huijun
    Zhang, Shanqing
    Zhang, Haimin
    Liu, Porun
    Yao, Xiangdong
    Wang, Yun
    Liu, Hongwei
    Zhu, Guangshan
    Year published
    2011
    Metadata
    Show full item record
    Abstract
    ABSTRACT: We present a facile vapor-phase hydrothermal approach for direct growth of vertically aligned titanate nanotubes on a titanium foil substrate. The resultant nanotubes display external diameters of 50 80 nm and walls with an average thickness of 10 nm that consist of more than 10 titanate layers. This is in strong contrast to the titanate nanotubes obtained from alkaline liquid-phase hydrothermal methods, which are generally smaller than 12 nm in external diameter and have walls consisting of less than five titanate layers. Importantly, the investigation confirmed that under vapor-phase hydrothermal ...
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    ABSTRACT: We present a facile vapor-phase hydrothermal approach for direct growth of vertically aligned titanate nanotubes on a titanium foil substrate. The resultant nanotubes display external diameters of 50 80 nm and walls with an average thickness of 10 nm that consist of more than 10 titanate layers. This is in strong contrast to the titanate nanotubes obtained from alkaline liquid-phase hydrothermal methods, which are generally smaller than 12 nm in external diameter and have walls consisting of less than five titanate layers. Importantly, the investigation confirmed that under vapor-phase hydrothermal conditions, the nanotubes were formed via a distinctive nanosheet rollup mechanism that differs remarkably from those of conventional liquid-phase hydrothermal processes. For the first time, a coaxial circular cylinder crystal structure of the resultant nanotubes was confirmed.
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    Journal Title
    Journal of the American Chemical Society
    Volume
    133
    Issue
    47
    DOI
    https://doi.org/10.1021/ja207530e
    Copyright Statement
    Self-archiving of the author-manuscript version is not yet supported by this journal. Please refer to the journal link for access to the definitive, published version or contact the author[s] for more information.
    Subject
    Chemical sciences
    Solid state chemistry
    Nanofabrication, growth and self assembly
    Nanomaterials
    Publication URI
    http://hdl.handle.net/10072/42414
    Collection
    • Journal articles

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