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  • A Raman spectroscopic study on the allocation of ammonium adsorbing sites on H2Ti3O7 nanofibre and its structural derivation during calcination

    Author(s)
    Liu, Hongwei
    Zheng, Zhanfeng
    Yang, Dongjiang
    Waclawik, Eric
    Ke, Xuebin
    Zhu, Huaiyong
    Palmer, Sara
    L. Frost, Ray
    Griffith University Author(s)
    Yang, Dongjiang
    Year published
    2010
    Metadata
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    Abstract
    The adsorption behaviour of ammonium ions and the structural features of layered proton trititanate were characterised by using Raman spectroscopy, X-ray diffraction (XRD) and transmission electron microscopy. It revealed that the intensity of the Raman band at 309 cm-1, assigned to very long Ti-Obonds (0.22 nm), reduced, whereas the band at 890 cm-1, assigned to very short Ti-O bonds (0.17 nm), increased slightly after the adsorption of ammonium ions (NH4+). The adsorption of ammonium ions enlarged the interlayer distance of the (200) plane. Ammonium ions were located at the corner of the TiO6 octahedral slabs. This ...
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    The adsorption behaviour of ammonium ions and the structural features of layered proton trititanate were characterised by using Raman spectroscopy, X-ray diffraction (XRD) and transmission electron microscopy. It revealed that the intensity of the Raman band at 309 cm-1, assigned to very long Ti-Obonds (0.22 nm), reduced, whereas the band at 890 cm-1, assigned to very short Ti-O bonds (0.17 nm), increased slightly after the adsorption of ammonium ions (NH4+). The adsorption of ammonium ions enlarged the interlayer distance of the (200) plane. Ammonium ions were located at the corner of the TiO6 octahedral slabs. This was further confirmed by XRD, with an increased intensity of the (201褐plane being observed.
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    Journal Title
    Journal of Raman Spectroscopy
    Volume
    41
    Issue
    12
    DOI
    https://doi.org/10.1002/jrs.2632
    Subject
    Physical Chemistry not elsewhere classified
    Condensed Matter Physics
    Physical Chemistry (incl. Structural)
    Mechanical Engineering
    Publication URI
    http://hdl.handle.net/10072/39943
    Collection
    • Journal articles

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