title: Treated Nanolayered Mn Oxide by Oxidizable Compounds: A Strategy To Improve the Catalytic Activity toward Water Oxidation.
abstract: Herein, we investigate the effect of post-treatment of nanolayered manganese oxide by different inorganic and organic compounds. We use the fact that nanolayered manganese oxides are among the strongest naturally occurring oxidants, capable of oxidizing a wide range of organic molecules. Post-treatment of the synthetic Mn oxides with oxidizable compounds increases the cerium(IV)-driven water oxidation catalyzed by treated layered manganese oxides more than 25 times. On the basis of X-ray absorption investigations, we attribute this effect to the increased amount of manganese(III) ions. This finding can explain some puzzles in water oxidation by manganese oxides and may help to advance toward an efficient design strategy of water-oxidizing catalyst in artificial photosynthetic systems.
authors.affiliation: Department of Chemistry, and Center of Climate Change and Global Warming, Institute for Advanced Studies in Basic Sciences (IASBS) , Zanjan, 45137-66731, Iran.
authors.forename: Mohammad
authors.initials: M
authors.lastname: Mahdi Najafpour
authors.affiliation: Department of Chemistry, and Center of Climate Change and Global Warming, Institute for Advanced Studies in Basic Sciences (IASBS) , Zanjan, 45137-66731, Iran.
authors.forename: Davood
authors.initials: D
authors.lastname: Jafarian Sedigh
authors.affiliation: Department of Chemistry, and Center of Climate Change and Global Warming, Institute for Advanced Studies in Basic Sciences (IASBS) , Zanjan, 45137-66731, Iran.
authors.forename: Seyedeh
authors.initials: S
authors.lastname: Maedeh Hosseini
authors.affiliation: Freie Universität Berlin , Fachbereich Physik, Arnimallee 14, D-14195 Berlin, Germany.
authors.forename: Ivelina
authors.initials: I
authors.lastname: Zaharieva