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Noble metals supported on carbon nanotubes using supercritical fluids for the preparation of composite materials : a look a the interface

hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorGARRIDO, Elsa
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorAYMONIER, Cyril
hal.structure.identifierMatériaux, ingénierie et science [Villeurbanne] [MATEIS]
hal.structure.identifierInstitut de Physique et Chimie des Matériaux de Strasbourg [IPCMS]
dc.contributor.authorROIBAN, Lucian
hal.structure.identifierInstitut de Physique et Chimie des Matériaux de Strasbourg [IPCMS]
dc.contributor.authorERSEN, Ovidiu
hal.structure.identifierPlateforme Aquitaine de Caractérisation des Matériaux [PLACAMAT]
dc.contributor.authorLABRUGÈRE, Christine
hal.structure.identifierGroupement de Recherches de Lacq
dc.contributor.authorGAILLARD, Patrice
dc.contributor.authorLAMIRAND-MAJIMEL, Mélanie
dc.date.issued2015
dc.identifier.issn0896-8446
dc.description.abstractEnCarbon nanotubes (CNTs) have attracted great interest from scientific and industrial communities thanks to their remarkable properties. However, even if their mass production is nowadays well-known, the methods commonly used lead to bundles made of hundreds of single nanotubes with inert surface. Through the description of a simple, rapid and green procedure to uniformly decorate CNTs with metal nanoparticles (Ag, Pd), this paper presents a look at the CNTs-metal interface as a function of the functionalization technique.Three types of CNTs are considered for deposition: raw CNTs, CNTs functionalized with the reference HNO3/H2SO4 method and CNTs functionalized with our approach using CO2/EtOH/H2O/H2O2 under temperature and pressure. For functionalized CNTs the Pd atoms and CNTs are linked by oxygen atoms and the coating is made of metallic palladium nanoparticles while palladium oxide nanoparticles are formed on raw CNTs, the functionalization having an influence on the nucleation and growth phenomenon. Furthermore the surface treatment of CNTs in acidic solution has a major drawback with CNTs contamination that is why a functionalization with CO2/EtOH/H2O/H2O2 under temperature and pressure is preferred. In addition, electron tomography has shown that the use of supercritical fluids leads to a uniform deposition of metal inside the bundles of CNTs. The orientation relationship between palladium nanoparticles and CNTs has also been determined; the {1 1 1} planes of palladium nanoparticles are parallel to the CNTs graphite planes. The supercritical fluids chemical deposition method appears as an interesting alternative process for the uniform decoration of CNTs with strong interfaces for the preparation of composite materials.
dc.language.isoen
dc.publisherElsevier
dc.subject.enCarbon nanotubes
dc.subject.enSupercritical fluids
dc.subject.enMetallic nanoparticles
dc.subject.enDeposition
dc.title.enNoble metals supported on carbon nanotubes using supercritical fluids for the preparation of composite materials : a look a the interface
dc.typeArticle de revue
dc.identifier.doi10.1016/j.supflu.2015.03.009
dc.subject.halChimie/Matériaux
bordeaux.journalJournal of Supercritical Fluids
bordeaux.page110-116
bordeaux.volume101
bordeaux.peerReviewedoui
hal.identifierhal-01141713
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-01141713v1
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