4.6 Article

Isotopic and kinetic assessment of photocatalytic water splitting on Zn-added Ga2O3 photocatalyst loaded with Rh2-yCryO3 cocatalyst

Journal

CHEMICAL PHYSICS LETTERS
Volume 486, Issue 4-6, Pages 144-146

Publisher

ELSEVIER SCIENCE BV
DOI: 10.1016/j.cplett.2010.01.006

Keywords

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Funding

  1. Ministry of Education, Culture, Sports, Science and Technology of Japan (MEXT)
  2. Global Centre of Excellence (GCOE) Program for Chemistry Innovation
  3. Tokyo Metropolitan Collaboration of Regional Entities for the Advancement of Technological Excellence
  4. Japan Science and Technology Agency (JST)

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Photocatalytic overall water splitting using Zn-added Ga2O3 modified with Rh2-yCryO3 showed a weaker hydrogen-deuterium isotope effect and a lower apparent activation energy than previously reported electrochemical H-2 evolution reactions. The photocatalytic reaction rates were dominated by bulk processes, rather than surface redox reactions. The isotope effect varied with the amounts of photocatalyst and cocatalyst, and with light intensity, due to varying contributions from surface reactions. (C) 2010 Elsevier B. V. All rights reserved.

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