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High-yield production of N-doped graphitic platelets by aqueous exfoliation of pyrolyzed chitosan

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High-yield production of N-doped graphitic platelets by aqueous exfoliation of pyrolyzed chitosan

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dc.contributor.author Primo Arnau, Ana María es_ES
dc.contributor.author Sánchez, Emilio es_ES
dc.contributor.author Delgado, José María es_ES
dc.contributor.author García Gómez, Hermenegildo es_ES
dc.date.accessioned 2015-11-10T13:08:58Z
dc.date.available 2015-11-10T13:08:58Z
dc.date.issued 2014-03
dc.identifier.issn 0008-6223
dc.identifier.uri http://hdl.handle.net/10251/57290
dc.description.abstract [EN] Full exploitation of the properties of N-doped graphene and few-layers graphitic platelets will require a method for the mass production of this highly conductive material. Herein the preparation of few-layers graphitic platelet dispersions at concentrations up to 0.16 mg ml(-1) is reported. These suspensions are produced by dispersion and exfoliation of N-doped graphitic carbons obtained from the chitosan biopolymer. This high concentration derives from the morphology of pyrolyzed chitosan constituted by a graphitic carbonaceous residue with loose stacking of the graphene sheets that is prone to undergo easy exfoliation. The presence of few layers graphitic sheets was confirmed by Raman spectroscopy, transmission electron microscopy, electron diffraction and atomic force microscopy. Our method results in the formation of N-doped graphitic platelet suspensions with a yield of 40 wt.% of the initial graphitic carbon, which could potentially be improved to 90 wt.% by four consecutive sonication-centrifugation cycles of the same pyrolyzed chitosan residue. The absence of defects or oxides is confirmed by X-ray photoelectron, infrared and Raman spectroscopies. Solution processing of graphene and few-layers graphitic flakes opens up a range of potential large-area applications, from device and sensor fabrication to liquid-phase chemistry. es_ES
dc.description.sponsorship Generous funding by Abengoa Solar is acknowledged. A.P. thanks the Spanish National Research Council for a research associate JAE.Doc contract. Partial financial funding by the Spanish Ministry of Economy and Competitiveness (CTQ2012-32315) and Generalidad Valenciana (Prometeo 2012/013) us gratefully acknowledged.
dc.language Inglés es_ES
dc.publisher Elsevier es_ES
dc.relation MINECO/CTQ2012-32315 es_ES
dc.relation.ispartof Carbon es_ES
dc.rights Reserva de todos los derechos es_ES
dc.subject Graphene oxide es_ES
dc.subject Biomass wastes es_ES
dc.subject Nitrogen es_ES
dc.subject Sheets es_ES
dc.subject Films es_ES
dc.subject.classification QUIMICA ORGANICA es_ES
dc.title High-yield production of N-doped graphitic platelets by aqueous exfoliation of pyrolyzed chitosan es_ES
dc.type Artículo es_ES
dc.identifier.doi 10.1016/j.carbon.2013.11.068
dc.rights.accessRights Cerrado es_ES
dc.contributor.affiliation Universitat Politècnica de València. Instituto Universitario Mixto de Tecnología Química - Institut Universitari Mixt de Tecnologia Química es_ES
dc.contributor.affiliation Universitat Politècnica de València. Departamento de Química - Departament de Química es_ES
dc.description.bibliographicCitation Primo Arnau, AM.; Sánchez, E.; Delgado, JM.; García Gómez, H. (2014). High-yield production of N-doped graphitic platelets by aqueous exfoliation of pyrolyzed chitosan. Carbon. 68:777-783. doi:10.1016/j.carbon.2013.11.068 es_ES
dc.description.accrualMethod Senia es_ES
dc.relation.publisherversion http://dx.doi.org/10.1016/j.carbon.2013.11.068 es_ES
dc.description.upvformatpinicio 777 es_ES
dc.description.upvformatpfin 783 es_ES
dc.type.version info:eu-repo/semantics/publishedVersion es_ES
dc.description.volume 68 es_ES
dc.relation.senia 285608 es_ES
dc.contributor.funder Ministerio de Economía y Competitividad


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