Comparison of hydrogen atom adsorption on Pt clusters with that on Pt surfaces: A study from density-functional calculations

Hydrogen atom adsorption energy on the clusters gradually decreases with increasing Pt cluster size. The adsorption on the facets of Pt147 clusters is similar to that on the corresponding Pt surfaces. On the other hand, Pt13, Pt38, and Pt55 clusters showed quite different adsorption behavior.