title: Nano-sized Mn3O4 and β-MnOOH from the decomposition of β-cyclodextrin-Mn: 2. The water-oxidizing activities.
abstract: Nano-sized Mn oxides contain Mn3O4, β-MnOOH and Mn2O3 have been prepared by a previously reported method using thermal decomposition of β-cyclodextrin-Mn complexes. In the next step, the water-oxidizing activities of these Mn oxides using cerium(IV) ammonium nitrate as a chemical oxidant are studied. The turnover frequencies for β-MnO(OH) and Mn3O4 are 0.24 and 0.01-0.17 (mmol O2/mol Mns), respectively. Subsequently, water-oxidizing activities of these compounds are compared to the other previously reported Mn oxides. Important factors affecting water oxidation by these Mn oxides are also discussed.
authors.affiliation: Department of Chemistry, Institute for Advanced Studies in Basic Sciences (IASBS), Zanjan 45137-66731, Iran; Center of Climate Change and Global Warming, Institute for Advanced Studies in Basic Sciences (IASBS), Zanjan 45137-66731, Iran. Electronic address: mmnajafpour@iasbs.ac.ir.
authors.forename: Mohammad Mahdi
authors.initials: MM
authors.lastname: Najafpour
authors.affiliation: Department of Chemistry, Institute for Advanced Studies in Basic Sciences (IASBS), Zanjan 45137-66731, Iran.
authors.forename: Ramin
authors.initials: R
authors.lastname: Mostafalu
authors.affiliation: Fachbereich Chemie and Wissenschaftliches Zentrum für Materialwissenschaften (WZMW), Philipps-Universität Marburg, Hans-Meerwein-Straße, D-35032 Marburg, Germany.
authors.forename: Małgorzata
authors.initials: M
authors.lastname: Hołyńska
authors.affiliation: Department of Chemistry, Institute for Advanced Studies in Basic Sciences (IASBS), Zanjan 45137-66731, Iran.
authors.forename: Foad
authors.initials: F
authors.lastname: Ebrahimi
authors.affiliation: Department of Chemistry, Institute for Advanced Studies in Basic Sciences (IASBS), Zanjan 45137-66731, Iran.
authors.forename: Babak
authors.initials: B
authors.lastname: Kaboudin
mesh_terms: D008345:Manganese / Q000737:chemistry / Q000378:metabolism*; D017895:Manganese Compounds / Q000737:chemistry / Q000378:metabolism*; D053768:Metal Nanoparticles / Q000737:chemistry; D010084:Oxidation-Reduction; D010087:Oxides / Q000737:chemistry / Q000378:metabolism*; D014867:Water / Q000737:chemistry / Q000378:metabolism*; D014961:X-Ray Diffraction; D047392:beta-Cyclodextrins / Q000737:chemistry / Q000378:metabolism*
chemical_list: D017895:Manganese Compounds; D010087:Oxides; D047392:beta-Cyclodextrins; D014867:Water; D008345:Manganese; C027424:manganese oxide; C031215:betadex