Synthesis of Carbon–Metal Multi-Strand Nanocomposites by Discharges in Heptane Between Two Metallic Electrodes

Handle URI:
http://hdl.handle.net/10754/623918
Title:
Synthesis of Carbon–Metal Multi-Strand Nanocomposites by Discharges in Heptane Between Two Metallic Electrodes
Authors:
Hamdan, A.; Kabbara, H.; Courty, M.-A.; Cha, M. S.; Martinez, J.-M.; Belmonte, T.
Abstract:
We studied composite wires assembled from electric field-driven nanoparticles in a dielectric liquid (heptane) to elucidate the exact processes and controlling factors involved in the synthesis of the multi-phase nanocomposites. Filamentary wires are synthesized by a two-step process: (1) abundant nanoparticle production, mostly of carbonaceous types, from heptane decomposition by spark discharge and of metal nanoparticles by electrode erosion and (2) assembly of hydrogenated amorphous carbonaceous nano-clusters with incorporated metal nanoparticles forming wires by dielectrophoretic transport while maintaining a high electric field between electrodes kept sufficiently separated to avoid breakdown. Four types of nanocomposites products are identified to form at different steps in distinctive zones of the setup. The black carbonaceous agglomerates with metal spherules made by electrode erosion represent the pyrolytic residues of heptane decomposition by spark discharge during step 1. The filamentary wires grown in the interelectrode gap during step 2 get assembled by dielectrophoretic transport and chaining forces. Their great stability is shown to express the concurrent effect of polymerization favoured by the abundance of metal catalysts. The nature, abundance, and transformation of solid particles from the source materials versus discharge conditions control the morphological and compositional diversity of the wires. The production of mineral and metal nano-particles traces the efficiency of dielectrophoresis to separate compound particle mixtures by size and to co-synthesize nanostructured microcrystals and nanocomposites. The link between impurities and the variability from nano- to micro-scales of the synthesized products provides an innovative contribution to the knowledge of nanocomposite synthesis triggered by electric field.
KAUST Department:
Clean Combustion Research Center
Citation:
Hamdan A, Kabbara H, Courty M-A, Cha MS, Martinez J-M, et al. (2017) Synthesis of Carbon–Metal Multi-Strand Nanocomposites by Discharges in Heptane Between Two Metallic Electrodes. Plasma Chemistry and Plasma Processing. Available: http://dx.doi.org/10.1007/s11090-017-9816-8.
Publisher:
Springer Nature
Journal:
Plasma Chemistry and Plasma Processing
Issue Date:
26-Apr-2017
DOI:
10.1007/s11090-017-9816-8
Type:
Article
ISSN:
0272-4324; 1572-8986
Additional Links:
http://link.springer.com/article/10.1007/s11090-017-9816-8
Appears in Collections:
Articles; Clean Combustion Research Center

Full metadata record

DC FieldValue Language
dc.contributor.authorHamdan, A.en
dc.contributor.authorKabbara, H.en
dc.contributor.authorCourty, M.-A.en
dc.contributor.authorCha, M. S.en
dc.contributor.authorMartinez, J.-M.en
dc.contributor.authorBelmonte, T.en
dc.date.accessioned2017-05-31T11:23:13Z-
dc.date.available2017-05-31T11:23:13Z-
dc.date.issued2017-04-26en
dc.identifier.citationHamdan A, Kabbara H, Courty M-A, Cha MS, Martinez J-M, et al. (2017) Synthesis of Carbon–Metal Multi-Strand Nanocomposites by Discharges in Heptane Between Two Metallic Electrodes. Plasma Chemistry and Plasma Processing. Available: http://dx.doi.org/10.1007/s11090-017-9816-8.en
dc.identifier.issn0272-4324en
dc.identifier.issn1572-8986en
dc.identifier.doi10.1007/s11090-017-9816-8en
dc.identifier.urihttp://hdl.handle.net/10754/623918-
dc.description.abstractWe studied composite wires assembled from electric field-driven nanoparticles in a dielectric liquid (heptane) to elucidate the exact processes and controlling factors involved in the synthesis of the multi-phase nanocomposites. Filamentary wires are synthesized by a two-step process: (1) abundant nanoparticle production, mostly of carbonaceous types, from heptane decomposition by spark discharge and of metal nanoparticles by electrode erosion and (2) assembly of hydrogenated amorphous carbonaceous nano-clusters with incorporated metal nanoparticles forming wires by dielectrophoretic transport while maintaining a high electric field between electrodes kept sufficiently separated to avoid breakdown. Four types of nanocomposites products are identified to form at different steps in distinctive zones of the setup. The black carbonaceous agglomerates with metal spherules made by electrode erosion represent the pyrolytic residues of heptane decomposition by spark discharge during step 1. The filamentary wires grown in the interelectrode gap during step 2 get assembled by dielectrophoretic transport and chaining forces. Their great stability is shown to express the concurrent effect of polymerization favoured by the abundance of metal catalysts. The nature, abundance, and transformation of solid particles from the source materials versus discharge conditions control the morphological and compositional diversity of the wires. The production of mineral and metal nano-particles traces the efficiency of dielectrophoresis to separate compound particle mixtures by size and to co-synthesize nanostructured microcrystals and nanocomposites. The link between impurities and the variability from nano- to micro-scales of the synthesized products provides an innovative contribution to the knowledge of nanocomposite synthesis triggered by electric field.en
dc.publisherSpringer Natureen
dc.relation.urlhttp://link.springer.com/article/10.1007/s11090-017-9816-8en
dc.subjectDischarge in liquidsen
dc.subjectNanoparticle synthesisen
dc.subjectMetal/carbon nanocompositeen
dc.subjectDielectrophoresisen
dc.titleSynthesis of Carbon–Metal Multi-Strand Nanocomposites by Discharges in Heptane Between Two Metallic Electrodesen
dc.typeArticleen
dc.contributor.departmentClean Combustion Research Centeren
dc.identifier.journalPlasma Chemistry and Plasma Processingen
dc.contributor.institutionUMR CNRS 7198, Institut Jean Lamour, Université de Lorraine, Nancy, Franceen
dc.contributor.institutionUPR 8521 PROMES CNRS, Procédés et Matériaux Solaires, Tecnosud, Perpignan, Franceen
dc.contributor.institutionUPR 8521 PROMES CNRSUniv. Perpignan, Tecnosud, Perpignan, Franceen
dc.contributor.institutionUMR CNRS 7198, CNRS, Institut Jean Lamour, Nancy, Franceen
kaust.authorHamdan, A.en
kaust.authorCha, M. S.en
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