Biomimetic Catalysts for Water Splitting

  • ChemPubSoc Europe Logo
  • Author: Angewandte Chemie International Edition
  • Published Date: 30 January 2019
  • Source / Publisher: Angewandte Chemie International Edition/Wiley-VCH
  • Copyright: Wiley-VCH Verlag GmbH & Co. KGaA
thumbnail image: Biomimetic Catalysts for Water Splitting

In photosynthesis, the oxygen-evolving complex in photosystem II uses a water-splitting catalyst to split water into protons, electrons, and dioxygen molecules. This Mn4Ca cluster (pictured left below) is a blueprint for man-made water-splitting catalysts. However, the cluster is prone to decomposition and it is, thus, challenging to mimic the structure and function of the biological catalyst in a laboratory setting.


Chunxi Zhang and colleagues, Chinese Academy of Sciences, Beijing, have synthesized two robust artificial Mn4Ca complexes (pictured right below). The calcium sites are stabilized by exchangeable solvent molecules, i.e., acetonitrile (CH3CN) or N,N-dimethylformamide (DMF). The solvent molecules were introduced by recrystallization from solutions containing the respective solvent. The complexes closely mimic the core geometric and electronic structures of the natural catalyst contained in photosystem II.


These artificial complexes could provide important chemical clues to understand the structure and mechanism of their biological counterpart. They may lead to development of more efficient catalysts for artificial photosynthesis.

 


 

Article Views: 887

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

Bookmark and Share

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


CONNECT:

ChemistryViews.org on Facebook

ChemistryViews.org on Twitter ChemistryViews.org on YouTube ChemistryViews.org on LinkedIn Sign up for our free newsletter


A product of ChemPubSoc Europe (16 European Chemical Societies)and Wiley-VCH