The relevant population ratios of structures are likely to change with changes in temperature, this will affect our E ads (x) values. We show this in figure Figure : Affect of temperature on our adsorption energies (E ads ) for a H atom on a Pt 13 NP using different thermodynamic ensembles generated with pyGlobOpt runs using xTB as the energetic evaluator. In figure we see an increase in E ads for the Pt 13 →Pt 13 H 2 at around 700 K this implies that there is a significant increase in population of high energy structures at this temperature causing the adsorption of H atoms to become less favourable. This is mirrored in the Pt 13 H 2 →Pt 13 H 4 as it becomes more favourable to stabilise the increasingly unstable Pt 13 H 2 structure with further H atoms leading to an equivalent sharp decline in E ads . For the Pt 13 →Pt 13 H 4 there is a consistent slight increase with increasing E ads .