Bayesian Learning of Chemisorption for Bridging Complexities of Electronic Descriptors

Abstract Building upon the d-band reactivity theory in surface chemistry and catalysis, we develop a Bayesian learning approach to probing chemisorption processes at atomically tailored metal sites. With representative species, e.g., *O and *OH, the Bayesian model trained with ab initio adsorption properties of transition metals predicts site reactivity at a diverse range of intermetallics and near-surface alloys while naturally providing uncertainty quantification from posterior sampling. More importantly, this conceptual framework sheds light on the orbitalwise nature of chemical bonding at adsorption sites with d-states characteristics ranging from bulk-like semi-elliptic bands to free-atom-like discrete energy levels, bridging complexities of electronic descriptors for the prediction of novel catalytic materials.