Coadsorption of hydrogen and Co at Ni(110) surfaces |
| |
| Institution: | 1. Institute of Physical Chemistry, Polish Academy of Sciences, ul. Kasprzaka 44/52, 01-224 Warsaw, Poland;2. Materials Measurement Science Division, National Institute of Standards and Technology, Gaithersburg, MA, USA;1. Department of Physics and Astronomy, Louisiana State University, Baton Rouge, LA 70803-4001, United States;2. Department of Physics, Harvard University, Cambridge, MA 02138, United States;1. Rzhanov Institute of Semiconductor Physics SB RAS, Acad. Lavrent’ev ave. 13, Novosibirsk 630090, Russia;2. Novosibirsk State University, Pirogov Str. 2, Novosibirsk 630090, Russia;1. Quantum Beam Science Research Directorate, National Institutes for Quantum and Radiological Science and Technology, 1-1-1, Kouto, Sayo-cho, Sayo-gun, Hyogo, 679-5148, Japan;2. Department of Physics, Chuo University, 21-13-27 Kasuga, Bunkyo-ku, Tokyo, 112-8551, Japan;3. Graduate School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan |
| |
| Abstract: | The adsorption of hydrogen and CO at Ni(110) surfaces has been studied using HREELS, TDS and LEED. Coadsorbed hydrogen is found to replace the top and bridge adsorption sites for CO at initially clean surfaces by one new bridge type site. The C-met vibration is shifted to lower frequency and a vibration of H is seen which is interpreted as originating from a met-H-CO complex. Thermal desorption spectra of hydrogen are strongly affected by the presence of CO at the surface and are observed to depend on the adsorption sequence. Structural information from LEED suggests that mainly cooperative adsorption phenomena are present in accordance with the TDS and HREELS data. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
