X-ray Photoelectron Spectra of Ag-Au Colloidal Nanoparticles after Interaction with Linear Carbon Chains
Source abstract
Abstract
The results of X-ray photoelectron spectra (XPS) characterization of the surface of Ag-Au colloidal nanoparticles (Ag-Au NPs), prepared by laser ablation in water before and after interaction with linear carbon chains (LCC), are presented. No additional features appear in high-energy resolved XPS core level spectra of Ag-Au NPs which indicates that surface is not oxidized. The measurements of XPS Ag 3d-spectrum of (Ag-Au)@LCC manifests the additional low-energy structure that is associated with the formation of Ag–C bonds. The charge transfer between Au atoms on the NPs surface and LCC was established. Additionally, some oxidation of the Ag atoms on the surface of (Ag-Au)@LCC is observed which arises during laser ablation in water. We assume that oxidative species will preferably interact with the areas outside the LCC instead of oxidizing the carbon chains which was confirmed by XPS C 1s spectra.
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Research context
OpenAlex topics: Laser-Ablation Synthesis of Nanoparticles · Gold and Silver Nanoparticles Synthesis and Applications · Quantum Dots Synthesis And Properties
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Institute of Physics and Technology, Ural Federal University, Mira Street 21, 620002 Yekaterinburg, Russia
M.N. Mikheev Institute of Metal Physics, Russian Academy of Sciences, Ural Branch, S. Kovalevskaya Street 18, 620990 Yekaterinburg, Russia
Dipartimento di Scienze Chimiche, Universita’ di Catania, Viale Andrea Doria 6, 95125 Catania, Italy
Institute of Natural Science, Ural Federal University, Kuibysheva Street 48, 620026 Yekaterinburg, Russia
Dipartimento di Scienze Matematiche e Informatiche, Scienze Fisiche e Scienze della Terra, Università degli Studi di Messina, 98166 Messina, Italy
Funding
Russian Science Foundation · Ministry of Science and High Education of Russia
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