Basic Research of Water Photolysis Using Pyrochlore Oxides

Abstract:

Photocatalytic proton reduction and water oxidation have been studied in a tris(2,2’-bipyridyl)ruthenium complex-catalyst system. Pyrochlore-type oxides have been used as proton reduction catalysts with a sacrificial electron donor (Na2EDTA) at pH 7 and as water oxidation catalysts with a sacrificial electron acceptor (K2S2O8) at pH 3. Rate constants for the proton reduction were estimated on the basis of photochemical processes. Yb2Ru2O7-δ was found to be the most active catalyst for proton reduction and water oxidation catalyst in this system.

• Periodical: Key Engineering Materials (Volume 388)
• Pages: 297-300
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.388.297
• Online since: September 2008
• Authors: Naohisa Mori, Yutori Tagoku, Hidenobu Shiroishi, Yoshinobu Saito, Morihiro Saito, Jun Kuwano
• Keywords: Proton Reduction, Pyrochlore, Water Oxidation, Water Photolysis

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