Coarsening phenomena of metal nanoparticles and the influence of the support pre-treatment: Pt/TiO2(110)

► Coarsening of Pt NPs on TiO2 is studied and simulated for three different systems. ► Modifications in the diffusion coalescence model: correct temperature dependence. ► Physically meaningful energetics for adatom formation in NPs is incorporated. ► More efficient simulation methods for coarsening phenomena are described. ► Diffusion-coalescence was found to be the dominant coarsening pathway for evaporated NPs.