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  • Multi-shelled CeO2 hollow microspheres as superior photocatalysts for water oxidation

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    QiPUB134.pdf (2.381Mb)
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    Accepted Manuscript (AM)
    Author(s)
    Qi, Jian
    Zhao, Kun
    Li, Guodong
    Gao, Yan
    Zhao, Huijun
    Yu, Ranbo
    Tang, Zhiyong
    Griffith University Author(s)
    Zhao, Huijun
    Year published
    2014
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    Abstract
    A general self-templating method is introduced to construct triple-shelled CeO2 hollow microspheres, which are composed of tiny CeO2 nanoparticles. When the triple-shelled CeO2 hollow microspheres are used as photocatalysts for direct water oxidation with AgNO3 as the electron scavenger, excellent activity and enhanced stability for O2 evolution are achieved, in contrast with commercial CeO2 nanoparticles, single-shelled CeO2 hollow microspheres and double-shelled CeO2 hollow microspheres. Such an outstanding performance is attributed to the unique properties of the triple-shelled CeO2 hollow microspheres including more ...
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    A general self-templating method is introduced to construct triple-shelled CeO2 hollow microspheres, which are composed of tiny CeO2 nanoparticles. When the triple-shelled CeO2 hollow microspheres are used as photocatalysts for direct water oxidation with AgNO3 as the electron scavenger, excellent activity and enhanced stability for O2 evolution are achieved, in contrast with commercial CeO2 nanoparticles, single-shelled CeO2 hollow microspheres and double-shelled CeO2 hollow microspheres. Such an outstanding performance is attributed to the unique properties of the triple-shelled CeO2 hollow microspheres including more efficient multiple reflections of the incident light by the inner shells, the larger surface area and more active sites for improving separation of electron–hole pairs, and the more curved surfaces unfavorable for deposition of in situ generated Ag nanoparticles.
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    Journal Title
    Nanoscale
    Volume
    6
    Issue
    8
    DOI
    https://doi.org/10.1039/c3nr06822f
    Copyright Statement
    © 2014 Royal Society of Chemistry. This is the author-manuscript version of this paper. Reproduced in accordance with the copyright policy of the publisher. Please refer to the journal website for access to the definitive, published version.
    Subject
    Physical sciences
    Other physical sciences not elsewhere classified
    Chemical sciences
    Publication URI
    http://hdl.handle.net/10072/102438
    Collection
    • Journal articles

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