Nanonetworks fabrication by laser ablation in water of bimetallic compositions of platinum and palladium with gold and silver

With the advancement of nanosciences and nanotechnologies, the goal of synthesizing nanomaterials with controllable composition and morphology, and hence optical, electronic and catalytic properties, seems increasingly within grasp. We propose and discuss a methodology for fabrication of bimetallic...

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Bibliographic Details
Published in:Lasers in manufacturing and materials processing 2022-03, Vol.9 (1), p.102-116
Main Authors: Nikov, Ro. G., Nedyalkov, N. N., Dikovska, A. Og, Karashanova, D. B.
Format: Article
Language:English
Subjects:
Ablation
Alloying
Bimetals
Composition
Electrochemistry
Engineering
Gold
Industrial and Production Engineering
Laser ablation
Machines
Manufacturing
Morphology
Nanomaterials
Nanoparticles
Nanostructure
Optical properties
Palladium
Platinum
Processes
Silver
Surfaces and Interfaces
Synthesis
Thin Films
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Summary:With the advancement of nanosciences and nanotechnologies, the goal of synthesizing nanomaterials with controllable composition and morphology, and hence optical, electronic and catalytic properties, seems increasingly within grasp. We propose and discuss a methodology for fabrication of bimetallic nanostructures with easily-controllable composition by using nanosecond laser ablation in liquid (LAL) of bimetallic films. Under certain process conditions, bimetallic Au-Pd, Ag-Pd, Au-Pt, and Ag-Pt nanonetworks (NNs) are obtained. TEM analysis shows that the LAL of bimetallic Au-Pd, Ag-Pd, and Au-Pt mainly leads to the formation of NNs, while in the case of ablation of Ag-Pt films, in addition to the NNs spherical nanoparticles are also observed. HRTEM analysis reveals that the NNs are composed of both alloyed sections and monometallic ones. A relative association is established between the relative content of Au and Ag in Pd- and Pt-based bimetallic films and the morphology of the nanostructures formed by LAL. The method presented is promising in view of synthesizing contamination-free nanostructures with complex composition and morphology that could find effective uses in fields such as biomedicine, sensorics, and electrochemistry.
ISSN:2196-7229
2196-7237
DOI:10.1007/s40516-022-00168-4