Afficher la notice abrégée

hal.structure.identifierInstitut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]
dc.contributor.authorAL-NAFIEY, Amer
hal.structure.identifierUnité Matériaux et Transformations - UMR 8207 [UMET]
dc.contributor.authorADDAD, Ahmed
hal.structure.identifierUnité Matériaux et Transformations - UMR 8207 [UMET]
dc.contributor.authorSIEBER, Brigitte
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorCHASTANET, Guillaume
hal.structure.identifierInstitut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]
hal.structure.identifierNanoBioInterfaces - IEMN [NBI - IEMN]
dc.contributor.authorBARRAS, Alexandre
hal.structure.identifierInstitut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]
dc.contributor.authorSZUNERITS, Sabine
hal.structure.identifierInstitut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]
dc.contributor.authorBOUKHERROUB, Rabah
dc.date.issued2017
dc.identifier.issn1385-8947
dc.description.abstractEnWater contamination with synthetic dyes and metal ions is an escalating problem, despite the huge research efforts put in the field of water treatment. The paper reports on one-step synthesis of reduced graphene oxide-cobalt oxide nanoparticles (rGO-Co3O4) nanocomposite under mild conditions. The nanocomposite material has been characterized using various analytical techniques, including scanning electron microscopy (SEM), transmission electron microscopy (TEM), energy dispersive X-ray (EDX) spectroscopy, UV–visible spectrophotometry and Fourier-transform infrared (FTIR) spectroscopy. The catalytic properties of the nanocomposite were demonstrated for the sodium borohydride-induced 4-nitrophenol reduction to 4-aminophenol. A full reduction has been achieved within less than 1 min at room temperature. Further, the nanocomposite was successfully applied for Cr(VI) adsorption with a maximum adsorption capacity of 208.8 mg.g−1, which is much higher than that obtained using many other magnetic adsorbents. Finally, the nanocomposite was found to be very efficient for anionic and cationic dye adsorption with complete removal within less than 2 min. The performance of the rGO-Co3O4 nanocomposite is quite high as compared to other graphene-based adsorbents. The ferromagnetic properties of the composite allowed effective separation and recyclability of the material by simple application of an external magnet.
dc.language.isoen
dc.publisherElsevier
dc.subject.enCo3O4
dc.subject.enReduced graphene oxide
dc.subject.en4-Nitrophenol
dc.subject.enReduction
dc.subject.enCr(VI)
dc.subject.enDyes
dc.subject.enAdsorption
dc.subject.enreduced graphene oxide
dc.subject.en4-nitrophenol
dc.subject.enreduction
dc.subject.endyes
dc.subject.enadsorption
dc.title.enReduced graphene oxide decorated with Co3O4 nanoparticles (rGO-Co3O4) nanocomposite: A reusable catalyst for highly efficient reduction of 4-nitrophenol, and Cr(VI) and dye removal from aqueous solutions
dc.typeArticle de revue
dc.identifier.doi10.1016/j.cej.2017.04.039
dc.subject.halChimie/Catalyse
dc.subject.halChimie/Autre
dc.subject.halSciences de l'environnement/Ingénierie de l'environnement
bordeaux.journalChemical Engineering Journal
bordeaux.page375-384
bordeaux.volume322
bordeaux.peerReviewedoui
hal.identifierhal-01520632
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-01520632v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Chemical%20Engineering%20Journal&rft.date=2017&rft.volume=322&rft.spage=375-384&rft.epage=375-384&rft.eissn=1385-8947&rft.issn=1385-8947&rft.au=AL-NAFIEY,%20Amer&ADDAD,%20Ahmed&SIEBER,%20Brigitte&CHASTANET,%20Guillaume&BARRAS,%20Alexandre&rft.genre=article


Fichier(s) constituant ce document

FichiersTailleFormatVue

Il n'y a pas de fichiers associés à ce document.

Ce document figure dans la(les) collection(s) suivante(s)

Afficher la notice abrégée