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Active Mixed‐Valent MnO x Water Oxidation Catalysts through Partial Oxidation (Corrosion) of Nanostructured MnO Particles
Author(s) -
Indra Arindam,
Menezes Prashanth W.,
Zaharieva Ivelina,
Baktash Elham,
Pfrommer Johannes,
Schwarze Michael,
Dau Holger,
Driess Matthias
Publication year - 2013
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.201307543
Subject(s) - catalysis , manganese , inorganic chemistry , manganese oxide , chemistry , electrochemistry , partial oxidation , oxide , ion , redox , photochemistry , electrode , organic chemistry
Yes, we CAN : Partial oxidation of inactive MnO nanoparticles by Ce IV as oxidant gives active MnO x catalysts that are suitable for effective photochemical and electrochemical water oxidation. The active MnO x catalyst contains mixed‐valent Mn II , Mn III , and Mn IV species (see picture; green and violet) interconnected through oxido bridges (red) with defects and disorders. MnO x is analogous to calcium–manganese oxide systems where the calcium sites are replaced by Mn II or Mn III ions.