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Confined Au-Pd Ensembles in Mesoporous TiO2 Spheres for the Photocatalytic Oxidation of Acetaldehyde

Authors

  • Fenglong Wang,

    1. ARC Centre of Excellence for Functional Nanomaterials, School of Chemical Engineering, University of New South Wales, Sydney, NSW 2052 (Australia)
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  • Dr. Yijiao Jiang,

    Corresponding author
    1. ARC Centre of Excellence for Functional Nanomaterials, School of Chemical Engineering, University of New South Wales, Sydney, NSW 2052 (Australia)
    • ARC Centre of Excellence for Functional Nanomaterials, School of Chemical Engineering, University of New South Wales, Sydney, NSW 2052 (Australia)

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  • Dr. Xiaoming Wen,

    1. School of Photovoltaics and Renewable Energy Engineering, University of New South Wales, Sydney, NSW 2052 (Australia)
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  • Dr. Junhai Xia,

    1. School of Aerospace, Mechanical & Mechatronic Engineering, University of Sydney, Sydney, NSW 2006 (Australia)
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  • Dr. Gang Sha,

    1. School of Aerospace, Mechanical & Mechatronic Engineering, University of Sydney, Sydney, NSW 2006 (Australia)
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  • Prof. Rose Amal

    Corresponding author
    1. ARC Centre of Excellence for Functional Nanomaterials, School of Chemical Engineering, University of New South Wales, Sydney, NSW 2052 (Australia)
    • ARC Centre of Excellence for Functional Nanomaterials, School of Chemical Engineering, University of New South Wales, Sydney, NSW 2052 (Australia)

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Abstract

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An ensemble cast: The confinement of ensembles of Au-Pd inside unique mesoporous TiO2 spheres contributes to their superior photocatalytic activity. Direct spectroscopic evidence reveals that the addition of palladium could suppress the growth of gold nanoclusters and prolong the lifetime of the excited electrons on these nanoclusters, thereby resulting in enhanced photoactivity.

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