1. Surface X-ray scattering of high index plane of platinum containing kink atoms in solid–liquid interface: Pt(310)=3(100)–(110)
- Author
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Masashi Nakamura, Osami Sakata, Nagahiro Hoshi, Akira Nakahara, and Kazushi Sumitani
- Subjects
Chemistry ,Scattering ,General Chemical Engineering ,X-ray ,chemistry.chemical_element ,chemistry.chemical_compound ,Crystallography ,Adsorption ,Transition metal ,Electrode ,Electrochemistry ,Perchloric acid ,Platinum ,Single crystal - Abstract
Surface structure of Pt(3 1 0) = 3(1 0 0)–(1 1 0), which contains kink atoms in the step, has been determined with the use of in situ surface X-ray scattering (SXS) in the double layer region (0.50 V(RHE)) in 0.1 M HClO 4 . Clean Pt(3 1 0) surface has pseudo (1 × 1) structure on which lateral displacements of 2–9% and 0.3–1% are found along a and b directions, respectively, whereas the surfaces of Pt(1 1 0) = 2(1 1 1)–(1 1 1) and Pt(3 1 1) = 2(1 0 0)–(1 1 1) are reconstructed to (1 × 2) according to previous reports. Interlayer spacing between the first and the second layers d 12 is contracted about 5% compared with the bulk spacing, whereas those between underlying layers are expanded down to fourth layer. Fully adsorbed CO has no effect on the surface structure of Pt(3 1 0). This result differs from that on Pt(1 1 1), where d 12 is expanded after CO adsorption.
- Published
- 2008