title: Mechanism, decomposition pathway and new evidence for self-healing of manganese oxides as efficient water oxidizing catalysts: new insights.
abstract: The electrochemical water-oxidation reaction usually requires a catalyst to reduce the overpotential and Earth-abundant catalysts, like MnO2, are attracting much attention. Here we use chemometric analysis, EPR and UV-Vis spectroscopies to track Mn(II) and MnO4(-) byproducts to the reaction of a MnO2 film in the presence of cerium(IV) ammonium nitrate. Permanganate ion is involved in at least two key reactions: it may oxidize water to O2 or can combine with Mn(II) to remake MnO2 solid. We propose mechanisms for water oxidation and present a self-healing process for this reaction.
authors: Department of Chemistry, Institute for Advanced Studies in Basic Sciences (IASBS), Zanjan, 45137-66731, Iran.
authors: Mohammad Mahdi
authors: MM
authors: Najafpour
authors: Mohsen
authors: M
authors: Kompany-Zareh
authors: Ali
authors: A
authors: Zahraei
authors: Davood
authors: D
authors: Jafarian Sedigh
authors: Hugues
authors: H
authors: Jaccard
authors: Maryam
authors: M
authors: Khoshkam
authors: R David
authors: RD
authors: Britt
authors: William H
authors: WH
authors: Casey