Premium
Unique Electrochemical Adsorption Properties of Pt‐Skin Surfaces
Author(s) -
van der Vliet Dennis F.,
Wang Chao,
Li Dongguo,
Paulikas Arvydas P.,
Greeley Jeffrey,
Rankin Rees B.,
Strmcnik Dusan,
Tripkovic Dusan,
Markovic Nenad M.,
Stamenkovic Vojislav R.
Publication year - 2012
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201107668
Subject(s) - adsorption , platinum , electrochemistry , catalysis , alloy , layer (electronics) , materials science , nanotechnology , chemical engineering , chemistry , metallurgy , organic chemistry , electrode , engineering
Thin skin : Pt‐alloy catalysts, such as annealed Pt 3 Ni(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, (—) Pt 3 Ni(111)‐skin versus (••••) Pt(111)), making it hard to determine the electrochemically active surface area of catalysts with Pt‐skin surfaces.