Water Splitting in Two Parts

  • Author: ChemViews
  • Published Date: 05 February 2011
  • Source / Publisher: ChemSusChem/Wiley-VCH
  • Copyright: Wiley-VCH Verlag GmbH & Co. KGaA
thumbnail image: Water Splitting in Two Parts

Related Societies

Splitting water into H2 and O2 by semiconductor photocatalysts has received much attention due to the potential for the large scale production of H2 from water using abundant solar light. But, not many semiconductors have the capability to absorb visible light and a sufficient potential for water splitting.

Ryu Abe, Hokkaido University, Japan, and co-workers present an effective photocatalytic water splitting system that mimics the two-step photoexcitation of photosynthesis in green plants. The water splitting reaction is divided into two parts, one for H2 evolution, using Pt-loaded tantalum oxynitride and another for O2 evolution, with Pt-loaded WO3. These are combined with a shuttle redox couple (IO3/I) in the solution.

The efficiency of overall water splitting was significantly affected by the concentration of iodide anions in the solution, as well as by the pH of the solution.

Image: (c) Wiley-VCH

Article Views: 3711

Sign in Area

Please sign in below

Additional Sign In options

Please note that to comment on an article you must be registered and logged in.
Registration is for free, you may already be registered to receive, e.g., the newsletter. When you register on this website, please ensure you view our terms and conditions. All comments are subject to moderation.

Article Comments - To add a comment please sign in

If you would like to reuse any content, in print or online, from ChemistryViews.org, please contact us first for permission. more

Follow on Facebook Follow on Twitter Follow on LinkedIn Follow on Instagram RSS Sign up for newsletters

Magazine of Chemistry Europe (16 European Chemical Societies) published by Wiley-VCH