CHEMISORPTION AND FRAGMENTATION OF C-60 ON PT(111) AND NI(110)

The interaction between C-60 and the Pt(111) surface has been studied by high-resolution electron-energy-loss spectroscopy, photoemission an d Anger spectroscopy, and few-energy electron diffraction from 100 to 1150 K. C-60 forms strong covalent bonds with Pt with very small charg e transfer (<0.8 electrons/molecule from C-60 to the substrate), has a low surface mobility, and decomposes at about 1050 K, leaving a multi domain graphitic surface layer. C-60 decomposes also on Ni(110) at abo ut 760 K, forming a carbidic carbon layer, which transforms into graph itic carbon at higher temperatures. Both surfaces act as a catalyst fo r the fragmentation process.