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Photooxidation Products of Ethanol During Photoelectrochemical Operation Using a Nanocrystalline Titania Anode and a Two Compartment Chemically Biased Cell

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Abstract

Production of hydrogen and/or electricity by photocatalytic treatment of aqueous ethanol solutions has been investigated in a two compartment chemically biased photoelectrochemical cell, employing commercial nanocrystalline Titania as photoanode and Pt as cathode. Results show that hydrogen is produced during photooxidation of ethanol by cathode reduction and by means of a flow of external electric current. The performance of the cell decreased after several hours of operation, most possibly due to the formation of hydrocarbons of higher molecular weight. This is contrary to simple photocatalytic ethanol oxidation where complete mineralization of alcohol is observed.

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Acknowledgments

We are grateful to Dr. V. Bekiari for useful discussions concerning this work. Financial support from the Program PENED (03EΔ607) of the General Secretariat of Research and Technology Hellas is graciously acknowledged.

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Authors and Affiliations

  1. Engineering Science Department, University of Patras, 26500, Patras, Greece

    Maria Antoniadou & Panagiotis Lianos

  2. Department of Chemical Engineering, University of Patras, 26500, Patras, Greece

    Dimitris I. Kondarides

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  1. Maria Antoniadou
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  2. Dimitris I. Kondarides
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  3. Panagiotis Lianos
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Correspondence to Panagiotis Lianos.

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Antoniadou, M., Kondarides, D.I. & Lianos, P. Photooxidation Products of Ethanol During Photoelectrochemical Operation Using a Nanocrystalline Titania Anode and a Two Compartment Chemically Biased Cell. Catal Lett 129, 344–349 (2009). https://doi.org/10.1007/s10562-009-9863-8

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  • DOI: https://doi.org/10.1007/s10562-009-9863-8

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