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Four-fold hollow site for S in a Ni(100) raft on NiO(100) |
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| Authors: | A P Woodhead S P Harte S A Haycock C A Muryn P L Wincott V R Dhanak G Thornton |
| Institution: | Surface Science Research Centre and Chemistry Department, University of Manchester, Manchester M13 9PL, UK |
| Abstract: | The reaction of H2S with NiO(100) has been studied by polarization-dependent surface EXAFS. The results evidence reduction of the selvedge to form a Ni raft having S in four-fold sites with a S–Ni bond length of 2.21±0.02 Å. The Ni–Ni in-plane distance is 2.77±0.09 Å, representing a 6±4% contraction compared to that in NiO(100). |
| Keywords: | Extended X-ray absorption fine structure (EXAFS) Hydrogen sulphide Low index single crystal surfaces Nickel oxides Surface chemical reaction |
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