Controlled periodic illumination in semiconductor photocatalysis

Olu Tokode, Radhakrishna Prabhu, Linda Lawton, Peter Robertson

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32 Citations (Scopus)
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Controlled periodic illumination is a hypothesis postulated in the early 1990s for enhancing the efficiency of semiconductor photocatalytic reactions. This technique has been proposed to improve photocatalytic efficiency by the nature of photon introduction alone. Before its application in semiconductor photocatalysis, controlled periodic illumination had been investigated in other fields including photosynthesis. This paper presents a detailed review of the state of the art research undertaken on the application of controlled periodic illumination in semiconductor photocatalysis. The review briefly introduces semiconductor photocatalysis, and then presents a detailed explanation of this technique, its importance to photocatalytic efficiency, an overview of previous results of its application in significant studies and present knowledge. Results from previous as well as some of the most recent studies indicate potential applications of controlled periodic illumination in areas other than just the improvement of the efficiency of the photocatalytic process.
Original languageEnglish
Pages (from-to)96-106
Number of pages11
JournalJournal of Photochemistry and Photobiology A: Chemistry
Early online date12 Dec 2015
Publication statusPublished - 15 Mar 2016

Bibliographical note

NOTICE: this is the author’s version of a work that was accepted for publication in Journal of Photochemistry and Photobiology A: Chemistry. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Journal of Photochemistry and Photobiology A: Chemistry, [VOL 319-320, (2015)] DOI: 10.1016/j.jphotochem.2015.12.002

© 2015, Elsevier. Licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International


  • Controlled periodic illumination
  • Semiconductor photocatalysis
  • UV LEDs
  • Langmuir–Hinshelwood
  • Photonic efficiency


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