Growth of Photocatalytic CdSe–Pt Nanorods and Nanonets

Authors

  • Einat Elmalem,

    1. Institute of Chemistry and the Center for Nanoscience and Nanotechnology The Hebrew University of Jerusalem Jerusalem 91904 (Israel)
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  • Aaron E. Saunders,

    1. Institute of Chemistry and the Center for Nanoscience and Nanotechnology The Hebrew University of Jerusalem Jerusalem 91904 (Israel)
    2. Present Address: Department of Chemical & Biological Engineering, University of Colorado, Boulder, CO, USA.
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  • Ronny Costi,

    1. Institute of Chemistry and the Center for Nanoscience and Nanotechnology The Hebrew University of Jerusalem Jerusalem 91904 (Israel)
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  • Asaf Salant,

    1. Institute of Chemistry and the Center for Nanoscience and Nanotechnology The Hebrew University of Jerusalem Jerusalem 91904 (Israel)
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  • Uri Banin

    Corresponding author
    1. Institute of Chemistry and the Center for Nanoscience and Nanotechnology The Hebrew University of Jerusalem Jerusalem 91904 (Israel)
    • Institute of Chemistry and the Center for Nanoscience and Nanotechnology The Hebrew University of Jerusalem Jerusalem 91904 (Israel).
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  • The research was supported in part by the US–Israel Bi-national Science Foundation, and by the Israel Science foundation under the NanoSCI EraNet program. We thank Dr. I. Popov for the HAADF-STEM studies. A.E.S. acknowledges funding from the U.S. National Science Foundation (OISE-0601919). Supporting Information is available online from Wiley InterScience or from the authors.

Abstract

original image

A hybrid Pt-CdSe nanoparticle system is prepared in aqueous media, displaying rod or nanonet structures depending on the pH. The new hybrids display morphology-dependent photocatalytic activity under visible light irradiation. Separation between photo-generated charge carriers occurs at the metal/semiconductor interface (see figure), allowing redox reactions to take place at the nanoparticle surface.

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