“…X-ray photoelectron spectroscopy (XPS) stands as a pivotal tool in fields such as industrial applications, catalysis, − and materials science for its capability to discern the chemical properties of materials. , By analysis of the core-level electron binding energy (BE), XPS can identify elemental compositions and their respective quantities in materials. The XPS peak position, characterized as the core-level BE shift (CLS), denoting the BE disparity between the target and the reference compounds, provides additional insights into the material’s chemical condition. , Nonetheless, CLS analysis is complicated, subject to a variety of influencing factors .…”