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Quality Improvement of Few-Layers Defective Graphene from Biomass and Application for H-2 Generation

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Quality Improvement of Few-Layers Defective Graphene from Biomass and Application for H-2 Generation

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dc.contributor.author He, Jinbao es_ES
dc.contributor.author Anouar, Aicha es_ES
dc.contributor.author Primo Arnau, Ana Maria es_ES
dc.contributor.author García Gómez, Hermenegildo es_ES
dc.date.accessioned 2021-01-21T04:31:49Z
dc.date.available 2021-01-21T04:31:49Z
dc.date.issued 2019-06 es_ES
dc.identifier.uri http://hdl.handle.net/10251/159602
dc.description.abstract [EN] Pyrolysis of filmogenic natural polymers gives rise to the formation of films of few-layers defective, undoped, and doped graphenes with low electrical conductivity (3000 to 5000 ohm /sq). For the sake of valorization of biomass wastes, it would be of interest to decrease the density of structural defects in order to increase the conductivity of the resulting few-layers graphene samples. In the present study, analytical and spectroscopic evidence is provided showing that by performing the pyrolysis at the optimal temperature (1100 degrees C), under a low percentage of H-2, a significant decrease in the density of defects related to the presence of residual oxygen can be achieved. This improvement in the quality of the resulting few-layers defective graphene is reflected in a decrease by a factor of about 3 or 5 for alginic acid and chitosan, respectively, of the electrical resistance. Under optimal conditions, few-layers defective graphene films with a resistance of 1000 ohm /sq were achieved. The electrode made of high-quality graphene prepared at 1100 degrees C under Ar/H-2 achieved a H-2 production of 3.62 mu mol with a positive applied bias of 1.1 V under LED illumination for 16 h. es_ES
dc.description.sponsorship Financial support by the Spanish Ministry of Economy and Competitiveness (Severo Ochoa and RTI2018-098237-B-C21) and Generalitat Valencia (Prometeo 2017/083) is gratefully acknowledged. J. H. thanks the Chinese Scholarship Council (CSC) for supporting his doctoral stage at Valencia. A. P. also acknowledges the Spanish Ministry of Economy and Competitiveness for a Ramon y Cajal research associate contract. es_ES
dc.language Inglés es_ES
dc.publisher MDPI AG es_ES
dc.relation.ispartof Nanomaterials es_ES
dc.rights Reconocimiento (by) es_ES
dc.subject Defective graphene es_ES
dc.subject Chitosan pyrolysis es_ES
dc.subject Alginate pyrolysis es_ES
dc.subject Graphene from biomass es_ES
dc.subject.classification QUIMICA ORGANICA es_ES
dc.title Quality Improvement of Few-Layers Defective Graphene from Biomass and Application for H-2 Generation es_ES
dc.type Artículo es_ES
dc.identifier.doi 10.3390/nano9060895 es_ES
dc.relation.projectID info:eu-repo/grantAgreement/GVA//PROMETEO%2F2017%2F083/ es_ES
dc.relation.projectID info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/RTI2018-098237-B-C21/ES/HETEROUNIONES DE GRAFENO CON CONFIGURACION CONTROLADA. SINTESIS Y APLICACIONES COMO SOPORTE EN CATALISIS Y EN ELECTRODOS/ es_ES
dc.rights.accessRights Abierto es_ES
dc.contributor.affiliation Universitat Politècnica de València. Departamento de Química - Departament de Química es_ES
dc.contributor.affiliation Universitat Politècnica de València. Instituto Universitario Mixto de Tecnología Química - Institut Universitari Mixt de Tecnologia Química es_ES
dc.description.bibliographicCitation He, J.; Anouar, A.; Primo Arnau, AM.; García Gómez, H. (2019). Quality Improvement of Few-Layers Defective Graphene from Biomass and Application for H-2 Generation. Nanomaterials. 9(6):1-15. https://doi.org/10.3390/nano9060895 es_ES
dc.description.accrualMethod S es_ES
dc.relation.publisherversion https://doi.org/10.3390/nano9060895 es_ES
dc.description.upvformatpinicio 1 es_ES
dc.description.upvformatpfin 15 es_ES
dc.type.version info:eu-repo/semantics/publishedVersion es_ES
dc.description.volume 9 es_ES
dc.description.issue 6 es_ES
dc.identifier.eissn 2079-4991 es_ES
dc.identifier.pmid 31248147 es_ES
dc.identifier.pmcid PMC6632024 es_ES
dc.relation.pasarela S\393688 es_ES
dc.contributor.funder Generalitat Valenciana es_ES
dc.contributor.funder China Scholarship Council es_ES
dc.contributor.funder Agencia Estatal de Investigación es_ES
dc.contributor.funder Ministerio de Economía y Competitividad es_ES
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