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Preparation of graphene quantum dots from pyrolyzed alginate

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Preparation of graphene quantum dots from pyrolyzed alginate

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dc.contributor.author Atienzar Corvillo, Pedro Enrique es_ES
dc.contributor.author Primo Arnau, Ana María es_ES
dc.contributor.author Lavorato, Cristina es_ES
dc.contributor.author Molinari, Raffaele es_ES
dc.contributor.author García Gómez, Hermenegildo es_ES
dc.date.accessioned 2016-06-29T08:58:32Z
dc.date.issued 2013
dc.identifier.issn 0743-7463
dc.identifier.uri http://hdl.handle.net/10251/66725
dc.description.abstract Pyrolysis at 900 degrees C under an inert atmosphere of alginate, a natural widely available biopolymer, renders a graphitic carbon that upon ablation by exposure to a pulsed 532 nm laser (7 ns, 50 mJ pulse(-1)) in acetonitrile, water, and other solvents leads to the formation of multilayer graphitic quantum dots. The dimensions and the number of layers of these graphitic nanoparticles decrease along the number of laser pulses from 100 to 10 nm average and from multiple layers to few layers graphene (11.5 nm thickness), respectively, leading to graphene quantum dots (GQDs). Accordingly, the emission intensity of these GQDs increases appearing at about 500 nm in the visible region along the reduction of the particle size. Transient absorption spectroscopy has allowed detection of a transient signal decaying in the microsecond time scale that has been attributed to the charge separation state. es_ES
dc.description.sponsorship Financial support by the Spanish MINECO (Severo Ochoa and CTQ2012-32315) is gratefully acknowledged. C.L. thanks the European Commission, the European Social Fund, and the Regione Calabria for a postgraduate scholarship and funding for her stay in Valencia. en_EN
dc.language Inglés es_ES
dc.publisher American Chemical Society es_ES
dc.relation Spanish MINECO CTQ2012-32315 es_ES
dc.relation European Commission es_ES
dc.relation European Social Fund es_ES
dc.relation Regione Calabria es_ES
dc.relation.ispartof Langmuir es_ES
dc.rights Reserva de todos los derechos es_ES
dc.subject CARBON NITRIDE DOTS es_ES
dc.subject EMERGENT NANOLIGHTS es_ES
dc.subject BIOMASS WASTES es_ES
dc.subject ACID-DRIVEN es_ES
dc.subject N,N-DIMETHYLFORMAMIDE es_ES
dc.subject PHOTOLUMINESCENCE es_ES
dc.subject NANOPARTICLES es_ES
dc.subject GRAPHITE es_ES
dc.subject STRATEGY es_ES
dc.subject CHITOSAN es_ES
dc.subject.classification QUIMICA ORGANICA es_ES
dc.subject.classification QUIMICA ANALITICA es_ES
dc.title Preparation of graphene quantum dots from pyrolyzed alginate es_ES
dc.type Artículo es_ES
dc.embargo.lift 10000-01-01
dc.embargo.terms forever es_ES
dc.identifier.doi 10.1021/la400618s
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 Atienzar Corvillo, PE.; Primo Arnau, AM.; Lavorato, C.; Molinari, R.; García Gómez, H. (2013). Preparation of graphene quantum dots from pyrolyzed alginate. Langmuir. 29(20):6141-6146. doi:10.1021/la400618s es_ES
dc.description.accrualMethod S es_ES
dc.relation.publisherversion http://dx.doi.org/10.1021/la400618s es_ES
dc.description.upvformatpinicio 6141 es_ES
dc.description.upvformatpfin 6146 es_ES
dc.type.version info:eu-repo/semantics/publishedVersion es_ES
dc.description.volume 29 es_ES
dc.description.issue 20 es_ES
dc.relation.senia 256138 es_ES


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