Abstract
Ab initio calculations on interaction of a C atom on small Pt-n clusters (n = 1-10) show strong carbidic bonding and a decrease in the magnetic moments of Pt clusters. The adsorption energy decreases in an oscillatory way with increasing size but suggests no graphitic phase on small Pt clusters. Pt-n clusters (n < 7) remain nearly planar after C adsorption but larger clusters have 3D structure. Further calculations of infrared and Raman spectra are reported. Interaction of H on pure and PtnC clusters shows stronger binding of H on PtnC clusters suggesting their better reactivity. (c) 2013 Elsevier B.V. All rights reserved.