Zobrazeno 1 - 10
of 43
pro vyhledávání: '"Ilya V. Yudanov"'
Publikováno v:
Nanomaterials, Vol 11, Iss 1, p 122 (2021)
Structure of model bimetallic PdAu nanoparticles is analyzed aiming to find Pd:Au ratios optimal for existence of Pd1 single-atom surface sites inside outer Au atomic shell. The analysis is performed using density-functional theory (DFT) calculations
Externí odkaz:
https://doaj.org/article/232caa88c2cb4998bf07998b16843258
Autor:
Svetlana S. Laletina, Mikhail Mamatkulov, Aleksey M. Shor, Elena A. Shor, Vasily V. Kaichev, Ilya V. Yudanov
Publikováno v:
Nanoscale. 14(11)
Methanol dehydrogenation on Pt nanoparticles was studied as a model reaction with the focus on size and structure effects employing the density functional theory approach. The effect of cluster morphology is manifested by the higher adsorption energy
Autor:
Ilya V. Yudanov, Valerii I. Bukhtiyarov, Mikhaïl Mamatkulov, Igor P. Prosvirin, Konstantin M. Neyman, Andrey V. Bukhtiyarov
Publikováno v:
The Journal of Physical Chemistry C. 123:8037-8046
For bimetallic Pd–Au/HOPG model catalysts, reversible enrichment of the surface by Pd under CO oxidation conditions was found using a near-ambient pressure X-ray photoelectron spectroscopy technique. Density functional calculations combined with ca
Autor:
Ilya V. Yudanov, Svetlana S. Laletina, Mikhaïl Mamatkulov, Alexander Genest, Elena A. Ivanova Shor, Vasily V. Kaichev, Notker Rösch
Publikováno v:
The Journal of Physical Chemistry C. 121:17371-17377
With density functional calculations, we studied the size dependence of adsorption properties of metal nanoparticles (NPs) via the example of CO as a probe on Ptn clusters with n = 38–260 atoms. For the largest NPs considered, the calculated adsorp
Autor:
Mikhaïl Mamatkulov, Elena A. Ivanova Shor, Ilya V. Yudanov, Vasily V. Kaichev, Valerii I. Bukhtiyarov, Svetlana S. Laletina
Publikováno v:
Journal of Siberian Federal University. Chemistry. 9:430-442
Publikováno v:
Chemical Physics Letters. 578:92-96
To assess various ionic-core approximations we carried out density functional calculations on a series of octahedral palladium and gold model clusters M n with n = 13–147. We compared results for average bond lengths, cohesive energies, vertical io
Publikováno v:
Journal of Cluster Science. 22:433-448
An important task for theory is the multi-scale modeling of catalytic properties of nanocrystallites with sizes ranging from clusters of few metal atoms to particles consisting of 103–104 atoms. To explore catalytic properties of nanosized metal ca
Publikováno v:
Kinetics and Catalysis. 51:832-842
The review is devoted to the use of high-level quantum-chemical calculations by the density functional method for the simulation of heterogeneous catalytic systems based on transition metals. The following problems are considered: (1) the development
Autor:
Notker Rösch, Michael Bron, Konstantin M. Neyman, Peter Claus, Ilya V. Yudanov, Kok Hwa Lim, Amjad B. Mohammad
Publikováno v:
The Journal of Physical Chemistry C. 113:13231-13240
Supported silver catalysts exhibit a remarkably high selectivity in the industrially important hydrogenation of α,β-unsaturated aldehydes to unsaturated alcohols. We carried out density functional calculations to clarify factors that affect the cat
Publikováno v:
The Journal of Physical Chemistry C. 112:20269-20275
Interatomic distances in metal nanoparticles are reduced from their values in the bulk. We studied computationally how this size-dependent geometry change (from the bulk) relates to the size-dependence of other properties of large metal clusters, inc