Structures of chlorine on palladium (111)

A.G. Shard, V.R. Dhanak, A. Santoni

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Abstract

ClK edge SEXAFS of the Pd(111)-(√3 × √3) R30°-Cl surface reveals a Pd-Cl bond length 2.39 angstrom. Two previously unreported structures of chlorine on Pd(111) are identified, the (4 × 4) and a highly complicated surface with chlorine coverages of θ = 0.57 and θ ≤ 0.24, respectively, if the (√3 × √3) R30° surface is assumed to be θ = 0.33. The (4 × 4) structure is discussed in terms of a close packed hexagonal overlayer of chlorine on an unreconstructed metal surface and as a surface compound of palladium and chlorine. The highly complicated structure appears to comprise crystallites or islands of a palladium/chlorine compound and once formed is stable over a wide range of nominal chlorine coverages.
Original languageEnglish
Pages (from-to)309 - 314
Number of pages6
JournalSurface Science
Volume445
Issue number2-3
DOIs
Publication statusPublished - 20 Jan 2000
Externally publishedYes

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All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Materials Chemistry

Cite this

Shard, A. G., Dhanak, V. R., & Santoni, A. (2000). Structures of chlorine on palladium (111). Surface Science, 445(2-3), 309 - 314. https://doi.org/10.1016/S0039-6028(99)01092-4