Journal
ELECTROCHIMICA ACTA
Volume 55, Issue 27, Pages 8087-8099Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.electacta.2010.03.067
Keywords
Electrodeposition; Dissolution; Ni; Pd; Au(111); In situ STM; Bimetallic surfaces
Categories
Ask authors/readers for more resources
In this work we study the electrochemical growth and dissolution of a Ni on Pd-Au(1 1 1) bimetallic surfaces using in situ scanning tunnelling microscopy We also compare Ni deposition on monometallic electrodes le Au(1 1 1)and Pd(1ML)/Au(1 1 1) usingelectrochemical characterizations Results evidence that the first Ni monolayer grows preferentially on Au(1 1 1) in a wide potential range and that a full Ni monolayer covering the entire Pd-Au surface can be selectively dissolved from Pd Islands No such selectivity is observed upon growth of subsequent Ni atomic planes We demonstrate that the Ni-substrate interactions play a key role in the above mentioned selectivity The binding energy of Ni to Pd is found to be 80 meV smaller than of Ni to Au The sign and the amplitude of this difference are discussed in light of the d band filling of the Pd-Au(1 1 1) bimetallic surface and the presence of adsorbed H on Pd before deposition (C) 2010 Elsevier Ltd All rights reserved
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available