Photoelectrochemical Water Splitting at Semiconductor Electrodes: Fundamental Problems and New Perspectives

Authors

  • Prof. Laurence M. Peter,

    Corresponding author
    1. Department of Chemistry, University of Bath, Bath BA2, 7AY (United Kingdom)
    • Laurence M. Peter, Department of Chemistry, University of Bath, Bath BA2, 7AY (United Kingdom)===

      K. G. Upul Wijayantha, Department of Chemistry, Loughborough University, Loughborough, Leicestershire L11 3TU (United Kingdom)===

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  • Dr. K. G. Upul Wijayantha

    Corresponding author
    1. Department of Chemistry, Loughborough University, Loughborough, Leicestershire L11 3TU (United Kingdom)
    • Laurence M. Peter, Department of Chemistry, University of Bath, Bath BA2, 7AY (United Kingdom)===

      K. G. Upul Wijayantha, Department of Chemistry, Loughborough University, Loughborough, Leicestershire L11 3TU (United Kingdom)===

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Abstract

Some fundamental aspects of light-driven water splitting at semiconductor electrodes are reviewed along with recent experimental and theoretical progress. The roles of thermodynamics and kinetics in defining criteria for successful water-splitting systems are examined. An overview of recent research is given that places emphasis on new electrode materials, theoretical advances and the development of semi-quantitative experimental methods to study the dynamics of light-driven water-splitting reactions. Key areas are identified that will need particular attention as the search continues for stable, efficient and cost-effective light-driven photoelectrolysis systems that exploit electron/hole separation in semiconductor/electrolyte junctions.

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