Please use this identifier to cite or link to this item: http://hdl.handle.net/10995/102055
Title: Atomic and electronic structures of stable linear carbon chains on Ag-nanoparticles
Authors: Boukhvalov, D. W.
Zhidkov, I. S.
Kurmaev, E. Z.
Fazio, E.
Cholakh, S. O.
D'Urso, L.
Issue Date: 2018
Publisher: Elsevier Ltd
Citation: Atomic and electronic structures of stable linear carbon chains on Ag-nanoparticles / D. W. Boukhvalov, I. S. Zhidkov, E. Z. Kurmaev, et al. — DOI 10.1016/j.carbon.2017.11.044 // Carbon. — 2018. — Vol. 128. — P. 296-301.
Abstract: In this work, we report X-ray photoelectron (XPS) and valence band (VB) spectroscopy measurements of surfactant-free silver nanoparticles and silver/linear carbon chains (Ag@LCC) structures prepared by pulse laser ablation (PLA) in water. Our measurements demonstrate significant oxidation only on the surfaces of the silver nanoparticles with many covalent carbon-silver bonds but only negligible traces of carbon-oxygen bonds. Theoretical modeling also provides evidence of the formation of robust carbon-silver bonds between linear carbon chains and pure and partially oxidized silver surfaces. A comparison of theoretical and experimental electronic structures also provides evidence of the presence of non-oxidized linear carbon chains on silver surfaces. To evaluate the chemical stability, we investigated the energetics of the physical adsorption of oxidative species (water and oxygen) and found that this adsorption is much preferrable on oxidized or pristine silver surfaces than the adsorption of linear carbon chains, which makes the initial step in the oxidation of LCC energetically unfavorable. © 2017 Elsevier Ltd
Keywords: ADSORPTION
CHAINS
CHEMICAL STABILITY
ELECTRONIC STRUCTURE
LASER ABLATION
METAL NANOPARTICLES
NANOPARTICLES
OXIDATION
CARBON-OXYGEN BONDS
OXIDATIVE SPECIES
PHYSICAL ADSORPTION
PULSE LASER ABLATION
SILVER NANOPARTICLES
SPECTROSCOPY MEASUREMENTS
THEORETICAL MODELING
X-RAY PHOTOELECTRONS
SILVER
URI: http://hdl.handle.net/10995/102055
Access: info:eu-repo/semantics/openAccess
SCOPUS ID: 85037525893
PURE ID: 6216473
938766b6-55a4-4de8-91c3-53ed3d53542d
ISSN: 86223
DOI: 10.1016/j.carbon.2017.11.044
Appears in Collections:Научные публикации, проиндексированные в SCOPUS и WoS CC

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