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Electrospun composites made of reduced graphene oxide and polyacrylonitrile-based activated carbon nanofibers (rGO/ACNF) for enhanced CO2 adsorption

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dc.affiliation.dptoUC3M. Departamento de Ciencia e Ingeniería de Materiales e Ingeniería Químicaes
dc.affiliation.grupoinvUC3M. Grupo de Investigación: Materiales compuestos poliméricos e interfaseses
dc.contributor.authorOthman, Faten Ermala Che
dc.contributor.authorYusof, Norhaniza
dc.contributor.authorGonzález Benito, Francisco Javier
dc.contributor.authorFan, Xiaolei
dc.contributor.authorIsmail, Ahmad Fauzi
dc.date.accessioned2021-06-23T10:20:22Z
dc.date.available2021-06-23T10:20:22Z
dc.date.issued2020-09-17
dc.description.abstractIn this work, we report the preparation of polyacrylonitrile (PAN)-based activated carbon nanofibers composited with different concentrations of reduced graphene oxide (rGO/ACNF) (1%, 5%, and 10% relative to PAN weight) by a simple electrospinning method. The electrospun nanofibers (NFs) were carbonized and physically activated to obtain activated carbon nanofibers (ACNFs). Texture, surface and elemental properties of the pristine ACNFs and composites were characterized using various techniques. In comparison to pristine ACNF, the incorporation of rGO led to changes in surface and textural characteristics such as specific surface area (SBET), total pore volume (Vtotal), and micropore volume (Vmicro) of 373 m2/g, 0.22 cm3/g, and 0.15 cm3/g, respectively, which is much higher than the pristine ACNFs (e.g., SBET = 139 m2/g). The structural and morphological properties of the pristine ACNFs and their composites were studied by Raman spectroscopy and X-ray diffraction (XRD), and field emission scanning electron microscopy (FE-SEM) respectively. Carbon dioxide (CO2) adsorption on the pristine ACNFs and rGO/ACNF composites was evaluated at different pressures (5, 10, and 15 bars) based on static volumetric adsorption. At 15 bar, the composite with 10% of rGO (rGO/ACNF0.1) that had the highest SBET, Vtotal, and Vmicro, as confirmed with BET model, exhibited the highest CO2 uptake of 58 mmol/g. These results point out that both surface and texture have a strong influence on the performance of CO2 adsorption. Interestingly, at p < 10 bar, the adsorption process of CO2 was found to be quite well fitted by pseudo-second order model (i.e., the chemisorption), whilst at 15 bar, physisorption prevailed, which was explained by the pseudo-first order model.en
dc.description.sponsorshipThis research was funded by Malaysian Ministry Education and Universiti Teknologi Malaysia under UTM Prototype Research grant (UTMPR) (Q.J130000.2851.00L41), Collaborative Research Grant (CRG) (Q.J130000.2451.07G72), UTM-TDR grant scheme (Q.J130000.3551.06G07), HICOE research grant (R.J090301.7851.4J428), UTM award grant (R.J130000.7351.5M002), and UTM Shine grant (Q.J130000.2451.09G21).en
dc.format.extent19es
dc.identifier.bibliographicCitationPolymers12(9), 2117, Sept. 2020, 19 pp.en
dc.identifier.doihttps://doi.org/10.3390/POLYM12092117
dc.identifier.issn2073-4360
dc.identifier.publicationfirstpage1es
dc.identifier.publicationissue9, 2117es
dc.identifier.publicationlastpage19es
dc.identifier.publicationtitlePolymersen
dc.identifier.publicationvolume12es
dc.identifier.urihttps://hdl.handle.net/10016/32918
dc.identifier.uxxiAR/0000027501
dc.language.isoengen
dc.publisherMDPIen
dc.rights© 2020 by the authors. Licensee MDPI, Basel, Switzerland.en
dc.rightsThis article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) licenseen
dc.rightsAtribución 3.0 España*
dc.rights.accessRightsopen accessen
dc.rights.urihttp://creativecommons.org/licenses/by/3.0/es/*
dc.subject.ecienciaMaterialeses
dc.subject.otherActivated carbon nanofibers (ACNF)en
dc.subject.otherReduced graphene oxide (RGO)en
dc.subject.otherRGO/ACNF compositeen
dc.subject.otherCO₂ captureen
dc.subject.otherElectrospinningen
dc.titleElectrospun composites made of reduced graphene oxide and polyacrylonitrile-based activated carbon nanofibers (rGO/ACNF) for enhanced CO2 adsorptionen
dc.typeresearch article*
dc.type.hasVersionVoR*
dspace.entity.typePublication
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