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Title: X-ray photoemission analysis of clean and carbon monoxide-chemisorbed platinum(111) stepped surfaces using a curved crystal

Surface chemistry and catalysis studies could significantly gain from the systematic variation of surface active sites, tested under the very same conditions. Curved crystals are excellent platforms to perform such systematics, which may in turn allow to better resolve fundamental properties and reveal new phenomena. This is demonstrated here for the carbon monoxide/platinum system. We curve a platinum crystal around the high-symmetry (111) direction and carry out photoemission scans on top. This renders the spatial core-level imaging of carbon monoxide adsorbed on a 'tunable' vicinal surface, allowing a straightforward visualization of the rich chemisorption phenomenology at steps and terraces. Through such photoemission images we probe a characteristic elastic strain variation at stepped surfaces, and unveil subtle stress-release effects on clean and covered vicinal surfaces. Lastly, these results offer the prospect of applying the curved surface approach to rationally investigate the chemical activity of surfaces under real pressure conditions.
Authors:
 [1] ;  [2] ;  [3] ;  [4] ;  [4] ;  [2] ;  [4] ;  [4] ;  [4] ;  [5] ;  [6] ;  [7] ;  [8]
  1. Donostia International Physics Centre, San Sebastian (Spain); Brookhaven National Lab. (BNL), Upton, NY (United States)
  2. Centro de Fisica de Materiales CSIC/UPV-EHU-Materials Physics Center, San Sebastian (Spain)
  3. Centro de Fisica de Materiales CSIC/UPV-EHU-Materials Physics Center, San Sebastian (Spain); IKERBASQUE, Basque Foundation for Science, Bilbao (Spain)
  4. Lund Univ., Lund (Sweden)
  5. Donostia International Physics Centre, San Sebastian (Spain); Univ. del Pais Vasco, San Sebastian (Spain)
  6. Donostia International Physics Centre, San Sebastian (Spain); IKERBASQUE, Basque Foundation for Science, Bilbao (Spain)
  7. Donostia International Physics Centre, San Sebastian (Spain); Centro de Fisica de Materiales CSIC/UPV-EHU-Materials Physics Center, San Sebastian (Spain)
  8. Donostia International Physics Centre, San Sebastian (Spain); Centro de Fisica de Materiales CSIC/UPV-EHU-Materials Physics Center, San Sebastian (Spain); Univ. del Pais Vasco, San Sebastian (Spain)
Publication Date:
OSTI Identifier:
1323140
Grant/Contract Number:
SC0012704
Type:
Accepted Manuscript
Journal Name:
Nature Communications
Additional Journal Information:
Journal Volume: 6; Journal ID: ISSN 2041-1723
Publisher:
Nature Publishing Group
Research Org:
Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Org:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
Country of Publication:
United States
Language:
English
Subject:
38 RADIATION CHEMISTRY, RADIOCHEMISTRY, AND NUCLEAR CHEMISTRY catalytic-oxidation; co; desorption; atoms; leed; au