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High Catalytic Activity of Heteropolynuclear Cyanide Complexes Containing Cobalt and Platinum Ions: Visible‐Light Driven Water Oxidation
Author(s) -
Yamada Yusuke,
Oyama Kohei,
Gates Rachel,
Fukuzumi Shunichi
Publication year - 2015
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201501116
Subject(s) - cyanide , chemistry , catalysis , aqueous solution , photochemistry , platinum , cobalt , inorganic chemistry , electron acceptor , ion , acceptor , visible spectrum , metal ions in aqueous solution , materials science , organic chemistry , physics , optoelectronics , condensed matter physics
A near‐stoichiometric amount of O 2 was evolved as observed in the visible‐light irradiation of an aqueous buffer (pH 8) containing [Ru II (2,2′‐bipyridine) 3 ] as a photosensitizer, Na 2 S 2 O 8 as a sacrificial electron acceptor, and a heteropolynuclear cyanide complex as a water‐oxidation catalyst. The heteropolynuclear cyanide complexes exhibited higher catalytic activity than a polynuclear cyanide complex containing only Co III or Pt IV ions as C‐bound metal ions. The origin of the synergistic effect between Co and Pt ions is discussed in relation to electronic and local atomic structures of the complexes.