Dynamic Metal-Support Interaction Dictates Cu Nanoparticle Sintering on
Al$_2$O$_3$ Surfaces
Dynamic Metal-Support Interaction Dictates Cu Nanoparticle Sintering on
Al$_2$O$_3$ Surfaces
Nanoparticle sintering remains a critical challenge in heterogeneous catalysis. In this work, we present a unified deep potential (DP) model for Cu nanoparticles on three Al$_2$O$_3$ surfaces ($\gamma$-Al$_2$O$_3$(100), $\gamma$-Al$_2$O$_3$(110), and $\alpha$-Al$_2$O$_3$(0001)). Using DP-accelerated simulations, we reveal striking facet-dependent nanoparticle stability and mobility patterns across the three surfaces. The nanoparticles diffuse …