The role of gold atom concentration in the processes of formation of Cu-Au nanoparticles from the gas phase

  1. Yuri Ya. GafnerORCID Logo,
  2. Svetlana L. GafnerORCID Logo,
  3. Darya A. RyzkovaORCID Logo and
  4. Andrey V. Nomoev

Submitting author affiliation: Katanov Khakas State University, Abakan, Russian Federation

Beilstein Arch. 2020, 202088. https://doi.org/10.3762/bxiv.2020.88.v1

Published 30 Jul 2020

  • Preprint

Abstract

Currently, bimetallic nanoparticles have been widely used in various fields of nanotechnology, but the main area of their application continues to be the catalysis of chemical reactions. However, it soon became clear that the catalytic activity of nanoalloys very much depends on their size, chemical composition, and shape. Therefore, the question of controlling the synthesis of bimetallic nanoparticles to obtain particles of the desired size, spatial structure, and chemical composition is very acute. In the synthesis of the Cu-Au studied by us, nanoparticles can occur either through chemical or physical methods, each of which has its own drawbacks. Though it is very difficult to achieve the required target chemical composition of nanoparticles during chemical synthesis, their size can be stabilized quite well. In turn, physical synthesis methods mainly allow you to withstand the required chemical composition, but the size of the resulting particles varies significantly. To solve this contradiction, we studied the formation of Cu-Au nanoparticles of different chemical compositions from a gaseous medium using computer Molecular Dynamics simulation to determine the effect of the concentration of gold atoms on the size and actual chemical composition of the formed bimetallic nanoparticles.

Keywords: binary nanoparticles; computer simulation; copper; gold; molecular dynamics

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When a peer-reviewed version of this preprint is available, this information will be updated in the information box above. If no peer-reviewed version is available, please cite this preprint using the following information:

Gafner, Y. Y.; Gafner, S. L.; Ryzkova, D. A.; Nomoev, A. V. Beilstein Arch. 2020, 202088. doi:10.3762/bxiv.2020.88.v1

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