The bonding of sulfur to a Pt(111) surface: photoemission and molecular orbital studies

✍ Scribed by Jose A. Rodriguez; Mark Kuhn; Jan Hrbek

• Publisher: Elsevier Science
• Year: 1996
• Tongue: English
• Weight: 612 KB
• Volume: 251
• Category: Article
• ISSN: 0009-2614
• DOI: 10.1016/0009-2614(96)00066-8

✦ Synopsis

The electronic properties of S/Pt(l 11) surfaces have heen investigated using high-resolution photoemission spectroscopy with synchrotron radiation, and ab initio self-consistent-field calculations. The formation of S-Ptf 111) bonds leads to a large decrease in the density of Sd states that the metal atoms exhibit around the Fermi level of the surface. This reduces the chemical reactivity of Pt. On Pt( 11 l), S is bonded to two dissimilar adsorption sites (hollow and probably bridge9 that show well separated S 2p binding energies and different bonding interactions. These states desorb from the surface following distinct reaction pathways.