CO adsorption on the Pt/Rh(100) surface studied by high-resolution photoemission

被引：9
|
作者：
Ramstad, A [1 ]
Strisland, F [1 ]
Ramsvik, T [1 ]
Borg, A [1 ]
机构：
[1] Norwegian Univ Sci & Technol, NTNU, Dept Phys, N-7491 Trondheim, Norway
来源：
SURFACE SCIENCE | 2000年 / 458卷 / 1-3期
关键词：
carbon monoxide; chemisorption; growth; low index single crystal surfaces; metallic films; platinum; rhodium; synchrotron radiation photoelectron spectroscopy;
D O I：
10.1016/S0039-6028(00)00430-1
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Submonolayers of platinum have been deposited on an Rh(100) substrate. Platinum growth and subsequent CO adsorption on the bimetallic surface has been studied by high-resolution photoemission applying synchrotron radiation. Platinum was found to grow as small, single-layer islands on Rh(100). The CO adsorption site on both metals is very sensitive to compositional changes in the bimetallic surface. A site switch from on-top to bridge sites in the c(2 x 2) CO overlayer on Rh(100) has been observed in the presence of 0.2 monolayers (ML) of platinum. The CO saturation coverage is found to decrease dramatically with increasing platinum coverages. 0.9 ML of platinum on Rh(100) binds approximately half the CO bound by Pt(100). We explain this in terms of a reduced CO-Pt bond strength through a 'ligand effect'. (C) 2000 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：135 / 146
页数：12
相关论文
共 50 条
  • [41] A valence band photoemission study of Pb adsorption on Rh(100) and Rh(110)
    Svec, M.
    Dudr, V.
    Sutara, F.
    Tsud, N.
    Skala, T.
    Chab, V.
    Matolin, V.
    Prince, K. C.
    [J]. SURFACE SCIENCE, 2007, 601 (24) : 5673 - 5677
  • [42] CO adsorption and CO oxidation on Rh(100)
    Baraldi, A
    Gregoratti, L
    Comelli, G
    Dhanak, VR
    Kiskinova, M
    Rosei, R
    [J]. APPLIED SURFACE SCIENCE, 1996, 99 (01) : 1 - 8
  • [43] Adsorption of NO and CO and specific features of their interaction on the Pt(100) surface
    M. Yu. Smirnov
    [J]. Kinetics and Catalysis, 2014, 55 : 327 - 353
  • [44] Adsorption of NO and CO and specific features of their interaction on the Pt(100) surface
    Smirnov, M. Yu.
    [J]. KINETICS AND CATALYSIS, 2014, 55 (03) : 327 - 353
  • [45] THE KINETICS OF THE ADSORPTION AND DESORPTION OF THE SYSTEM CO/PT(111) DERIVED FROM HIGH-RESOLUTION TREELS
    FROITZHEIM, H
    SCHULZE, M
    [J]. SURFACE SCIENCE, 1989, 211 (1-3) : 837 - 843
  • [46] Study of CO adsorption on La-Rh(100) surface alloys
    Kildemo, M
    Ramsvik, T
    Raaen, S
    [J]. SURFACE SCIENCE, 2002, 497 (1-3) : 254 - 268
  • [47] ADSORPTION AND COADSORPTION OF CO AND NO ON THE RH(100) SURFACE - A THEORETICAL-ANALYSIS
    VUCKOVIC, DL
    JANSEN, SA
    HOFFMANN, R
    [J]. LANGMUIR, 1990, 6 (04) : 732 - 746
  • [48] In situ high-resolution XPS studies on adsorption of NO on Pt(111)
    Zhu, JF
    Kinne, M
    Fuhrmann, T
    Denecke, R
    Steinrück, HP
    [J]. SURFACE SCIENCE, 2003, 529 (03) : 384 - 396
  • [49] CO ON W(100) AT 100-K STUDIED BY A HIGH-RESOLUTION EELS SPECTROMETER WITH MULTI-CHANNEL DETECTOR
    FRANCHY, R
    IBACH, H
    [J]. SURFACE SCIENCE, 1985, 155 (01) : 15 - 23
  • [50] CO adsorption on Pd(111): a high-resolution core level photoemission and electron energy loss spectroscopy study
    Surnev, S
    Sock, M
    Ramsey, MG
    Netzer, FP
    Wiklund, M
    Borg, M
    Andersen, JN
    [J]. SURFACE SCIENCE, 2000, 470 (1-2) : 171 - 185
12345