Life cycle of single atom catalysts: a Mössbauer study on degradation and reactivation of tetrapyrrolic Fe–N–C powders
Davide Menga, F. E. Wagner, Tim‐Patrick Fellinger
Abstract
Degradation of single-site model Fe–N–C powder tracked using cryo-Mössbauer spectroscopy suggests a simple mechanism comprising the oxidation of Fe( ii ) to Fe( iii ) followed by precipitation of iron oxide. Curiously, the characteristic doublet D2 is converted into D1 upon exposure to air.
Topics & Concepts
Mössbauer spectroscopyDegradation (telecommunications)CatalysisPrecipitationIron oxideAtom (system on chip)Materials scienceOxideSpectroscopyCrystallographyChemistryMetallurgyPhysicsMeteorologyEmbedded systemComputer scienceTelecommunicationsQuantum mechanicsBiochemistryElectrocatalysts for Energy ConversionCatalytic Processes in Materials Science