Co-sputtering of gold and copper onto liquids: a route towards the production of porous gold nanoparticles
| Autor: | Stephanos Konstantinidis, Abdel-Aziz El Mel, Milan Dopita, Jérôme Cornil, Cinthia Antunes Corrêa, Adrien Chauvin, David Cornil, Pierre-Yves Tessier, Anna Fucikova, Elen Duverger-Nédellec, Anastasiya P. Sergievskaya, J. Vesely |
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| Přispěvatelé: | Charles University [Prague] (CU), Centre d'Innovation et de Recherche en Matériaux Polymères (CIRMAP), Université de Mons (UMons), Institut des Matériaux Jean Rouxel (IMN), Université de Nantes - UFR des Sciences et des Techniques (UN UFR ST), Université de Nantes (UN)-Université de Nantes (UN)-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)-Ecole Polytechnique de l'Université de Nantes (EPUN), Université de Nantes (UN)-Université de Nantes (UN), Institute of Physics of the Czech Academy of Sciences (FZU / CAS), Czech Academy of Sciences [Prague] (CAS), University of Mons [Belgium] (UMONS) |
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Copper oxide
Materials science Annealing (metallurgy) Alloy Nanoparticle chemistry.chemical_element Bioengineering 02 engineering and technology engineering.material 010402 general chemistry 01 natural sciences chemistry.chemical_compound Sputtering General Materials Science Electrical and Electronic Engineering ComputingMilieux_MISCELLANEOUS Nanoporous Mechanical Engineering General Chemistry 021001 nanoscience & nanotechnology Copper 0104 chemical sciences chemistry Chemical engineering Mechanics of Materials Colloidal gold engineering [PHYS.COND.CM-MS]Physics [physics]/Condensed Matter [cond-mat]/Materials Science [cond-mat.mtrl-sci] 0210 nano-technology |
| Zdroj: | Nanotechnology Nanotechnology, Institute of Physics, 2020, 31 (45), pp.455303. ⟨10.1088/1361-6528/abaa75⟩ |
| ISSN: | 0957-4484 1361-6528 |
| Popis: | Effective methods for the synthesis of high-purity nanoparticles (NPs) have been extensively studied for a few decades. Among others, cold plasma-based sputtering metals onto a liquid substrate appears to be a very promising technique for the synthesis of high-purity NPs. The process enables the production of very small NPs without using any toxic reagents and complex chemical synthesis routes, and enables the synthesis of alloy NPs which can be the first step towards the formation of porous NPs. In this paper, the synthesis of gold-copper alloy NPs has been performed by co-sputtering gold and copper targets over pentaerythritol ethoxylate. The resulting solutions contain a mixture of gold, copper oxide, and alloy NPs having a radius of few angstroms. The annealing of these NPs, inside the solution, has been performed in order to increase their size and further induce the dealloying of the Au-Cu NPs. The resulting NPs exhibit either a nanoporous structure or are self-organized in an agglomerate of small NPs. |
| Databáze: | OpenAIRE |
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