Wavelet analysis of a Cu-oxo zeolite EXAFS simulated spectrum

In 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 different 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.