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N-doped graphene derived from biomass as a visible-light photocatalyst for hydrogen generation from water/methanol mixtures

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N-doped graphene derived from biomass as a visible-light photocatalyst for hydrogen generation from water/methanol mixtures

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dc.contributor.author Lavorato, Cristina es_ES
dc.contributor.author Primo Arnau, Ana María es_ES
dc.contributor.author Molinari, Raffaele es_ES
dc.contributor.author García Gómez, Hermenegildo es_ES
dc.date.accessioned 2016-01-21T10:20:59Z
dc.date.issued 2014-01-03
dc.identifier.issn 0947-6539
dc.identifier.uri http://hdl.handle.net/10251/60101
dc.description.abstract There is much current interest in developing graphene-based materials as photocatalysts, particularly in the field of solar fuels and the photocatalytic generation of hydrogen. Graphene is a versatile material allowing different modification strategies to improve its activity. Thus, in the present manuscript we report that, in contrast to the lack of photocatalytic activity of undoped graphene, nitrogen doping introduces UV- and visible-light activity for hydrogen evolution; the efficiency of the material depends on the preparation conditions. The N-doped graphene is obtained by pyrolysis under an inert atmosphere of natural chitosan, which is considered a biomass waste, followed by ultrasound exfoliation, without the need of oxidation and reconstitution. The main parameter controlling the residual amount of nitrogen and the resulting photocatalytic activity is the pyrolysis temperature that produces an optimal material when the thermal treatment is carried out at 900 degrees C. Due to the fact that, in contrast to graphene oxide, N-doped graphene exhibits an almost neutral absorption spectrum, the material exhibits photocatalytic activity upon UV- (355nm) and visible-light (532nm) irradiation, and is able to generate hydrogen upon simulated sunlight illumination. es_ES
dc.description.sponsorship A.P. is grateful to the Spanish National Research Council for a JAE.Doc research associate contract. C.L. thanks the European Commission, the European Social Fund, and the Regione Calabria for financial support of her Ph.D. fellowship and funding for her stay in Valencia. H.G. thanks the Ministry of Economy and Competitiveness (Severo Ochoa and CTQ-3231315) and the Generalidad Valenciana (Prometeo 2012/013) for financial support. en_EN
dc.language Inglés es_ES
dc.publisher Wiley-VCH Verlag es_ES
dc.relation.ispartof Chemistry - A European Journal es_ES
dc.rights Reserva de todos los derechos es_ES
dc.subject doping es_ES
dc.subject graphene es_ES
dc.subject hydrogen generation es_ES
dc.subject photocatalysis es_ES
dc.subject semiconductors es_ES
dc.subject solar fuels es_ES
dc.subject.classification QUIMICA ORGANICA es_ES
dc.title N-doped graphene derived from biomass as a visible-light photocatalyst for hydrogen generation from water/methanol mixtures es_ES
dc.type Artículo es_ES
dc.embargo.lift 10000-01-01
dc.embargo.terms forever es_ES
dc.identifier.doi 10.1002/chem.201303689
dc.relation.projectID info:eu-repo/grantAgreement/MINECO//CTQ2012-32315/ES/REDUCCION FOTOCATALITICA DEL DIOXIDO DE CARBONO/ es_ES
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 Lavorato, C.; Primo Arnau, AM.; Molinari, R.; García Gómez, H. (2014). N-doped graphene derived from biomass as a visible-light photocatalyst for hydrogen generation from water/methanol mixtures. Chemistry - A European Journal. 20(1):187-194. doi:10.1002/chem.201303689 es_ES
dc.description.accrualMethod S es_ES
dc.relation.publisherversion http://dx.doi.org/10.1002/chem.201303689 es_ES
dc.description.upvformatpinicio 187 es_ES
dc.description.upvformatpfin 194 es_ES
dc.type.version info:eu-repo/semantics/publishedVersion es_ES
dc.description.volume 20 es_ES
dc.description.issue 1 es_ES
dc.relation.senia 285612 es_ES
dc.identifier.eissn 1521-3765
dc.contributor.funder European Social Fund es_ES
dc.contributor.funder Regione Calabria es_ES
dc.contributor.funder Generalitat Valenciana es_ES
dc.contributor.funder European Commission es_ES
dc.contributor.funder Ministerio de Economía y Competitividad
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