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Dr. Dennis F. van der Vliet, Dr. Chao Wang, Dongguo Li, Arvydas P. Paulikas, Dr. Jeffrey Greeley, Dr. Rees B. Rankin, Dr. Dusan Strmcnik, Dr. Dusan Tripkovic, Dr. Nenad M. Markovic and Dr. Vojislav R. Stamenkovic Unique Electrochemical Adsorption Properties of Pt-Skin Surfaces Angewandte Chemie International Edition 51

Article first published online: 20 FEB 2012 | DOI: 10.1002/anie.201107668

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Thin skin: Pt-alloy catalysts, such as annealed Pt3Ni(111) (see STM image; color changes mark a single atomic step), with a surface layer of pure platinum, termed a Pt-skin surface, have very different electrochemical adsorption properties to monometallic Pt. The adsorption of hydrogen is largely suppressed (see CV, (—) Pt3Ni(111)-skin versus (••••) Pt(111)), making it hard to determine the electrochemically active surface area of catalysts with Pt-skin surfaces.

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