Abstract
Coadsorption of cesium and iodine on Pt(111) has been studied with Low Energy Electron Diffraction, Auger Electron Spectroscopy and Thermal Desorption Spectroscopy. By adsorbing I 2 onto a Cs layer with saturation coverage (with an incommensurate hexagonal close packed structure), two distinct structures were prepared. First, Pt(111)(4 × 4)–Cs,I was observed after dosing until the work function had increased by 1 eV. Further I 2 dosing gives mixed structures and then saturates at Pt ( 111 ) ( 7 × 7 ) R 19.1 ∘ –Cs,I. The Pt(111)(4× 4)–Cs,I was assigned to a Cs 2I 2D ionic crystal. Adsorption of Cs onto an I layer and the reactivity of selected coadsorption systems to oxygen were also investigated. Electrostatic calculations were performed to compare the stability of various structures, and it is shown that bilayer structures and mixed monolayer structures can both be consistent with ionic principles.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
