Effects of Metal-Ion Dopants on the Photocatalytic Reactivity of Quantum-Sized TiO2 Particles

Authors

  • Wonyong Choi,

    1. W. M. Keck Laboratories, California Institute of Technology, Pasadena, CA 91125 (USA), Telefax: Int. code + (818)395-2940
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  • Andreas Termin,

    1. W. M. Keck Laboratories, California Institute of Technology, Pasadena, CA 91125 (USA), Telefax: Int. code + (818)395-2940
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  • Michael R. Hoffmann

    Corresponding author
    1. W. M. Keck Laboratories, California Institute of Technology, Pasadena, CA 91125 (USA), Telefax: Int. code + (818)395-2940
    • W. M. Keck Laboratories, California Institute of Technology, Pasadena, CA 91125 (USA), Telefax: Int. code + (818)395-2940
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  • This research was supported by the Advanced Research Projects Agency and the Office of Naval Research (N0014-92-J-1901).

Abstract

Oxidation and reduction rates are increased when the photocatalyst TiO2 is doped with metal ions. The photochemical oxidation of CHCl3 and the photochemical reduction of CCl4 were examined in the presence of 21 different doped TiO2 catalysts. Dopant metal ions with closed shells were found to have little effect on reactivity. The authors present their results in the form of a periodic chart.

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