Photocatalytic Reduction of CO2 on TiO2 and Other Semiconductors

Authors

  • Severin N. Habisreutinger,

    1. Department für Physik und Center for Nanoscience (CeNS), Ludwig-Maximilians-Universität (LMU) München, Amalienstrasse 54, 80799 München (Germany)
    2. Fachbereich Physik, Universität Konstanz, Universitätsstrasse 10, 78457 Konstanz (Germany)
    3. Present address: Clarendon Laboratory, Department of Physics, Oxford University, Parks Road, Oxford, OX1 3PU (Great Britain)
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  • Prof. Lukas Schmidt-Mende,

    Corresponding author
    1. Department für Physik und Center for Nanoscience (CeNS), Ludwig-Maximilians-Universität (LMU) München, Amalienstrasse 54, 80799 München (Germany)
    2. Fachbereich Physik, Universität Konstanz, Universitätsstrasse 10, 78457 Konstanz (Germany)
    • Department für Physik und Center for Nanoscience (CeNS), Ludwig-Maximilians-Universität (LMU) München, Amalienstrasse 54, 80799 München (Germany)
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  • Dr. Jacek K. Stolarczyk

    Corresponding author
    1. Department für Physik und Center for Nanoscience (CeNS), Ludwig-Maximilians-Universität (LMU) München, Amalienstrasse 54, 80799 München (Germany)
    • Department für Physik und Center for Nanoscience (CeNS), Ludwig-Maximilians-Universität (LMU) München, Amalienstrasse 54, 80799 München (Germany)
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Abstract

Rising atmospheric levels of carbon dioxide and the depletion of fossil fuel reserves raise serious concerns about the ensuing effects on the global climate and future energy supply. Utilizing the abundant solar energy to convert CO2 into fuels such as methane or methanol could address both problems simultaneously as well as provide a convenient means of energy storage. In this Review, current approaches for the heterogeneous photocatalytic reduction of CO2 on TiO2 and other metal oxide, oxynitride, sulfide, and phosphide semiconductors are presented. Research in this field is focused primarily on the development of novel nanostructured photocatalytic materials and on the investigation of the mechanism of the process, from light absorption through charge separation and transport to CO2 reduction pathways. The measures used to quantify the efficiency of the process are also discussed in detail.

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