Anisotropic Growth of Titania onto Various Gold Nanostructures: Synthesis, Theoretical Understanding, and Optimization for Catalysis

Authors

  • Zhi Wei Seh,

    1. Institute of Materials Research and Engineering, Agency for Science, Technology and Research (A*STAR), 3 Research Link, Singapore 117602 (Singapore)
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  • Dr. Shuhua Liu,

    1. Institute of Materials Research and Engineering, Agency for Science, Technology and Research (A*STAR), 3 Research Link, Singapore 117602 (Singapore)
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  • Shuang-Yuan Zhang,

    1. Institute of Materials Research and Engineering, Agency for Science, Technology and Research (A*STAR), 3 Research Link, Singapore 117602 (Singapore)
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  • Dr. M. S. Bharathi,

    1. Institute of High Performance Computing, A*STAR, 1 Fusionopolis Way, Singapore 138632 (Singapore)
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  • Dr. H. Ramanarayan,

    1. Institute of High Performance Computing, A*STAR, 1 Fusionopolis Way, Singapore 138632 (Singapore)
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  • Michelle Low,

    1. Institute of Materials Research and Engineering, Agency for Science, Technology and Research (A*STAR), 3 Research Link, Singapore 117602 (Singapore)
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  • Kwok Wei Shah,

    1. Institute of Materials Research and Engineering, Agency for Science, Technology and Research (A*STAR), 3 Research Link, Singapore 117602 (Singapore)
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  • Prof. Yong-Wei Zhang,

    Corresponding author
    1. Institute of High Performance Computing, A*STAR, 1 Fusionopolis Way, Singapore 138632 (Singapore)
    • Institute of High Performance Computing, A*STAR, 1 Fusionopolis Way, Singapore 138632 (Singapore)
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  • Prof. Ming-Yong Han

    Corresponding author
    1. Institute of Materials Research and Engineering, Agency for Science, Technology and Research (A*STAR), 3 Research Link, Singapore 117602 (Singapore)
    2. Division of Bioengineering, National University of Singapore, Singapore 117576 (Singapore)
    • Institute of Materials Research and Engineering, Agency for Science, Technology and Research (A*STAR), 3 Research Link, Singapore 117602 (Singapore)
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Abstract

original image

How does your garden grow? A facile method can tune the anisotropic growth of TiO2 onto differently shaped gold nanoparticles to form Janus, eccentric, and concentric geometries (see picture). The Janus Au-TiO2 nanostructures were found to be energetically stable using calculations, and they possess the highest catalytic activity out of all three geometries due to the highly accessible, exposed gold core on one side.

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