In-situ surface x-ray scattering observation of long-range ordered ({radical}19x{radical}19)R23.4{degrees}-13CO structure on Pt(111) in aqueous electrolytes.
Journal Article
·
· Electrochem. Solid State Lett.
OSTI ID:961428
Presented herein is the experimental observation of the long-range ordered ({radical}{ovr 19} x {radical}{ovr 19})R23.4{sup o}-13CO structure on Pt(111) in aqueous electrolytes by in situ surface X-ray scattering. The results confirmed the presence of two mirrored domains suggested earlier on the basis of scanning tunneling microscopy and infrared measurements. Based on the weak intensity of the second order adlattice reflections and earlier results obtained by other techniques, a further refinement of the ({radical}{ovr 19} x {radical}{ovr 19}) structure with tilted CO molecules is proposed. The hystereses observed in transitions between (2x2)-3CO and ({radical}{ovr 19} x {radical}{ovr 19})R23.4{sup o}-13CO phases, as well as in CO adsorption and stripping, with change in electrode potential are discussed.
- Research Organization:
- Argonne National Laboratory (ANL)
- Sponsoring Organization:
- SC
- DOE Contract Number:
- AC02-06CH11357
- OSTI ID:
- 961428
- Report Number(s):
- ANL/MSD/JA-47685
- Journal Information:
- Electrochem. Solid State Lett., Journal Name: Electrochem. Solid State Lett. Journal Issue: 3 ; 2004 Vol. 7; ISSN 1099-0062
- Country of Publication:
- United States
- Language:
- ENGLISH
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