XPS quantification of oxygen vacancies in mesoporous and non-mesoporous CeO<sub>2</sub>: comment on an article by Thill <i>et al.</i>, <i>J. Mater. Chem. A</i>, 2020, <b>8</b>, 24752–24762
E. Paparazzo
Abstract
The present Comment emphasises that accurate speciation of the chemistry of the cerium in the authors' catalysts requires careful consideration of the line shape of XPS Ce 3d spectra characteristic of CeO 2 and Ce 2 O 3 oxides.
Topics & Concepts
CeriumX-ray photoelectron spectroscopyMesoporous materialCerium oxideSpectral lineMaterials scienceCatalysisChemistryChemical engineeringInorganic chemistryPhysicsOrganic chemistryEngineeringAstronomyCatalytic Processes in Materials ScienceCatalysis and Oxidation ReactionsRadioactive element chemistry and processing