Wavelet analysis of a Cu-oxo zeolite EXAFS simulated spectrum

Publication date: Available online 15 May 2019Source: Radiation Physics and ChemistryAuthor(s): Andrea Martini, Ilia A. Pankin, Anna Marsicano, Kirill A. Lomachenko, Elisa BorfecchiaAbstractIn this work, we focus on the simulated EXAFS spectrum of a Cu-oxo dimer sited in the eight-membered ring of the chabazite zeolite framework. We show the high level of complexity related to the analysis of the second and third shell of the EXAFS-Fourier transform due to the overlap of contributions stemming from atomic species present in the Cu-local environment. Subsequently, we demonstrate the potential of Wavelet Transform Analysis as a new tool in the identification and visualization of EXAFS atomic contributions, providing an easier and effective interpretation of the data collected on Cu-zeolite systems.
Source: Radiation Physics and Chemistry - Category: Physics Source Type: research