![](/images/graphics-bg.png)
Hydrogen Adsorption on Palladium and Platinum Overlayers : DFT Study
Joint Authors
Pašti, Igor A.
Gavrilov, Nemanja M.
Mentus, Slavko V.
Source
Advances in Physical Chemistry
Issue
Vol. 2011, Issue 2011 (31 Dec. 2011), pp.1-8, 8 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2011-07-10
Country of Publication
Egypt
No. of Pages
8
Main Subjects
Abstract EN
Hydrogen adsorption on twenty different palladium and platinum overlayer surfaces with (111) crystallographic orientation was studied by means of periodic DFT calculations on the GGA-PBE level.
Palladium and platinum overlayers here denote either the Pd and Pt mono- and bilayers deposited over (111) crystallographic plane of Pd, Pt, Cu, and Au monocrystals or the (111) crystallographic plane of Pd and Pt monocrystals with inserted one-atom-thick surface underlayer of Pd, Pt, Cu, and Au.
The attention was focused on the bond lengths, hydrogen adsorption energetics, mobility of adsorbed hydrogen, and surface reactivity toward hydrogen electrode reactions.
Both the ligand and strain effects were considered, found to lead to a significant modification of the electronic structure of Pd and Pt overlayers, described through the position of the d-band center, and tuning of the hydrogen adsorption energy in the range that covers approximately 120 kJmol−1.
Mobility of hydrogen adsorbed on studied overlayers was found to be determined by hydrogen-metal binding energy.
Obtained results regarding Pd layers on Pt(111) and Au(111) surfaces, in conjunction with some of the recent experimental data, were used to explain its electrocatalytic activity towards hydrogen evolution reaction.
American Psychological Association (APA)
Pašti, Igor A.& Gavrilov, Nemanja M.& Mentus, Slavko V.. 2011. Hydrogen Adsorption on Palladium and Platinum Overlayers : DFT Study. Advances in Physical Chemistry،Vol. 2011, no. 2011, pp.1-8.
https://search.emarefa.net/detail/BIM-461969
Modern Language Association (MLA)
Pašti, Igor A.…[et al.]. Hydrogen Adsorption on Palladium and Platinum Overlayers : DFT Study. Advances in Physical Chemistry No. 2011 (2011), pp.1-8.
https://search.emarefa.net/detail/BIM-461969
American Medical Association (AMA)
Pašti, Igor A.& Gavrilov, Nemanja M.& Mentus, Slavko V.. Hydrogen Adsorption on Palladium and Platinum Overlayers : DFT Study. Advances in Physical Chemistry. 2011. Vol. 2011, no. 2011, pp.1-8.
https://search.emarefa.net/detail/BIM-461969
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-461969