MANGANESE DIOXIDE AS SPECIFIC REDOX CATALYST IN THE PHOTOSENSITIZED OXYGEN GENERATION FROM WATER
Catalytic formation of oxygen from water was observed in the photosensitized reaction by trisbipyridineruthenium(II) using manganese dioxide as a redox catalyst and pentaammine chlorocobalt(III) as an electron acceptor in acidic solution. The β- and “activated” materials are found to be the most efficient and specific redox catalysts, and a 230% of O2 yield based on MnO2 is obtained.