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Related papers: Adsorption of CO on the Ca3Ru2O7(001) surface

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We have studied the chemisorption processes of O2 on the (100) surface of uranium using generalized gradient approximation to density functional theory. Dissociative adsorptions of O2 are significantly favored compared to molecular…

Strongly Correlated Electrons · Physics 2015-06-24 M. N. Huda , A. K. Ray

Adsorption of $O_{2}$ molecule on Al surface has been a long standing puzzle for the first principles calculation. We have studied the adsorption of $O_{2}$ molecule on the Al(111) surface using hybrid functionals. In contrast to the…

Materials Science · Physics 2012-10-30 Heng-Rui Liu , Hongjun Xiang , X. G. Gong

Single-atom catalysts are potentially ideal model systems to investigate structure-function relationships in catalysis, if the active sites can be uniquely determined. In this work, we study the interaction of C2H4 with a model…

To investigate chemical reactivity of Cu atomic-scale structures, we performed simulations based on the generalized gradient approximation in the density functional theory. An atomic layer of Cu forming a triangular lattice (TL) was found…

Materials Science · Physics 2011-05-16 S Nogami , H Kizaki , K Kusakabe

Scanning tunneling microscopy using a CO-functionalized tip is combined with simulations to explore the impact of the CO tilt angle on topographies of a single Cu atom and CO molecule adsorbed on Cu(111). Images of the Cu atom acquired with…

Materials Science · Physics 2024-09-24 Ivan Abilio , Nicolas Néel , Jörg Kröger , Krisztián Palotás

We study the effect of coadsorption of CO and O on a Ziff-Gulari-Barshad (ZGB) model with CO desorption (ZGB-d) for the reaction CO + O --> CO_2 on a catalytic surface. Coadsorption of CO on a surface site already occupied by an O is…

Statistical Mechanics · Physics 2009-11-12 G. M. Buendia , E. Machado , P. A. Rikvold

In this study, we investigated the physisorption mechanisms of O2, H2O, CH4, and CO2 molecules on alumina and their effect on electronic properties. We employed quantum-classical molecular dynamics simulations and the self-consistent-charge…

Ab initio total energy calculations within the framework of density functional theory have been performed for atomic hydrogen and oxygen chemisorption on the (0001) surface of double hexagonal packed americium using a full-potential…

Strongly Correlated Electrons · Physics 2015-05-14 P. P. Dholabhai , R. Atta-Fynn , A. K. Ray

We have calculated the adsorption energy of carbon monoxide on a monolayer of copper adsorbed on the (111) face of cubic zirconia. We investigate the structural parameters of three phases of bulk zirconia (cubic, tetragonal, and monoclinic)…

Materials Science · Physics 2007-05-23 Eric J. Walter , Steven P. Lewis , Andrew M. Rappe

We present a computational study into the adsorption properties of CO$_2$ on amorphous and crystalline water surfaces under astrophysically relevant conditions. Water and carbon dioxide are two of the most dominant species in the icy…

Astrophysics of Galaxies · Physics 2017-09-13 L. J. Karssemeijer , G. A. de Wijs , H. M. Cuppen

Using the high angular resolution provided by the ALMA interferometre we want to resolve the COM emission in the hot molecular core Sagittarius B2(N1) and thereby shed light on the desorption process of Complex Organic Molecules (COMs) in…

Astrophysics of Galaxies · Physics 2022-09-21 Laura A. Busch , Arnaud Belloche , Robin T. Garrod , Holger S. P. Müller , Karl M. Menten

We used DFT to study the energetics of the decomposition of alane, AlH3, on the Si(001) surface, as the acceptor complement to PH3. Alane forms a dative bond with the raised atoms of silicon surface dimers, via the Si atom lone pair. We…

Materials Science · Physics 2017-09-13 Richard L. Smith , David R. Bowler

In recent years due to improvements in calculation methods and increased computer power, it has become possible to perform first-principles investigations for ``simple'' chemical reactions at surfaces. We have carried out such studies for…

Materials Science · Physics 2009-10-31 C. Stampfl , M. Scheffler

The radicals HCO and CH$_3$ on carbon monoxide ice surfaces were simulated using density functional theory. Their binding energy on amorphous CO ice shows broad distributions, with approximative average values of 500 K for HCO and 200 K for…

Astrophysics of Galaxies · Physics 2019-04-16 Thanja Lamberts , Max N. Markmeyer , Florian J. Kolb , Johannes Kästner

Extensive density-functional calculations are performed for chemisorption of atoms in the three first periods (H, B, C, N, O, F, Al, Si, P, S, and Cl) on the polar TiC(111) surface. Calculations are also performed for O on TiC(001), for…

Materials Science · Physics 2007-05-23 Carlo Ruberto , Bengt I. Lundqvist

Diffusion of species in icy dust grain mantles is a fundamental process that shapes the chemistry of interstellar regions; yet measurements of diffusion in interstellar ice analogs are scarce. Here we present measurements of CO diffusion…

Astrophysics of Galaxies · Physics 2018-01-24 Ilsa R. Cooke , Karin I. Öberg , Edith C. Fayolle , Zoe Peeler , Jennifer B. Bergner

The structure and electronic properties of single Cu atoms, copper monolayers and thin copper films on the polar oxygen and zinc terminated surfaces of ZnO are studied using periodic density-functional calculations. We find that the binding…

Materials Science · Physics 2009-11-10 B. Meyer , D. Marx

Results of recent density functional theory calculations for alkali metal adsorbates on close-packed metal surfaces are discussed. Single adatoms on the (111) surface of Al and Cu are studied with the self-consistent surface Green-function…

mtrl-th · Physics 2016-09-07 C. Stampfl , M. Scheffler

Experiments performed at high gas partial pressures have demonstrated that the kinetics of the CO oxidation reaction at Ru(0001) is different and somewhat anomalous compared to that over other transition metal surfaces and, in particular,…

Condensed Matter · Physics 2009-10-28 C. Stampfl , M. Scheffler

The solid-state reaction was used to synthesize CoO2 nanostructured material. Cobalt nitrate tetrahydrate and sodium oxide (NaOH) were combined to produce CoO2 nanostructured material. The three synthesized working electrodes were each…

Materials Science · Physics 2025-02-12 Shoaib Akram , Muneeb ur Rahman , Fazli Maula , Osama Tariq Satti , Shahbaz Afzal , Fawad Ali