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  • Capture of radioactive cations from water using niobate nanomaterials with layered and tunnel structures

    Author(s)
    Sun, Jin
    Liu, Long
    Zhao, Xiaoliang
    Yang, Shuanglei
    Komarneni, Sridhar
    Yang, Dongjiang
    Griffith University Author(s)
    Yang, Dongjiang
    Year published
    2015
    Metadata
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    Abstract
    Niobates with one-dimensional (1D) morphology, layered KNb3O8 nanorods and tunnel structured Na2Nb2O6·H2O nanofibers, are fabricated readily by a reaction between niobium oxide and alkali hydroxides under hydrothermal conditions. They exhibit ideal properties for removal of radioactive cations such as Sr2+, Ba2+ (as simulant for 226Ra2+) and Cs+ ions from wastewater through an ion exchange process. Compared with the Na2Nb2O6·H2O nanofibers, the KNb3O8 nanorods displayed better performance for the irreversible entrapment of the toxic cations, particularly Ba2+ cations, due to the deformation of the layer structure. Besides, ...
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    Niobates with one-dimensional (1D) morphology, layered KNb3O8 nanorods and tunnel structured Na2Nb2O6·H2O nanofibers, are fabricated readily by a reaction between niobium oxide and alkali hydroxides under hydrothermal conditions. They exhibit ideal properties for removal of radioactive cations such as Sr2+, Ba2+ (as simulant for 226Ra2+) and Cs+ ions from wastewater through an ion exchange process. Compared with the Na2Nb2O6·H2O nanofibers, the KNb3O8 nanorods displayed better performance for the irreversible entrapment of the toxic cations, particularly Ba2+ cations, due to the deformation of the layer structure. Besides, these 1D niobates are acid resistant with selective uptake of the radioactive cations in the presence of a large excess of K+ or Na+ ions.
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    Journal Title
    RSC Advances
    Volume
    5
    Issue
    92
    DOI
    https://doi.org/10.1039/c5ra10907h
    Subject
    Chemical Sciences not elsewhere classified
    Chemical Sciences
    Publication URI
    http://hdl.handle.net/10072/101527
    Collection
    • Journal articles

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