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ARTIGO_Nanoparticulated WO3NiWO4UsingCellulose.pdf2,42 MBAdobe PDFVisualizar/Abrir
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dc.contributor.authorGuimarães, Munique Gonçalves-
dc.contributor.authorMacedo, Julio Lemos de-
dc.contributor.authorLinares León, José Joaquín-
dc.contributor.authorGhesti, Grace Ferreira-
dc.date.accessioned2026-11-12T11:49:17Z-
dc.date.available2026-11-12T11:49:17Z-
dc.date.issued2024-
dc.identifier.citationGUIMARÃES, Munique G. et al. Nanoparticulated WO3/NiWO4 using cellulose as a template and Its application as an auxiliary co-catalyst to Pt for ethanol and glycerol electro-oxidation. International Journal of Molecular Sciences, [S. l.], v. 25, n. 2, 685, 2024. DOI: https://doi.org/10.3390/ijms25020685. Disponível em: https://www.mdpi.com/1422-0067/25/2/685. Acesso em: 12 nov. 2026.pt_BR
dc.identifier.urihttp://repositorio.unb.br/handle/10482/57411-
dc.language.isoengpt_BR
dc.publisherMDPIpt_BR
dc.rightsAcesso Abertopt_BR
dc.titleNanoparticulated WO3/NiWO4 using cellulose as a template and Its application as an auxiliary co-catalyst to Pt for ethanol and glycerol electro-oxidationpt_BR
dc.typeArtigopt_BR
dc.subject.keywordCelulose nanocristalinapt_BR
dc.subject.keywordCelulose microcristalinapt_BR
dc.subject.keywordÓxido de níquelpt_BR
dc.subject.keywordTrióxido de tungstêniopt_BR
dc.subject.keywordEletrocatálisept_BR
dc.subject.keywordEtanolpt_BR
dc.subject.keywordGlicerolpt_BR
dc.rights.licenseThis article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https:// creativecommons.org/licenses/by/ 4.0/).pt_BR
dc.identifier.doihttps://doi.org/10.3390/ijms25020685pt_BR
dc.description.abstract1This work reports the use of cellulose as a template to prepare nanosized WO3 or NiWO4 and its application as a co-catalyst in the electro-oxidation of ethanol and glycerol. Microcrystalline cellulose was hydrolyzed with phosphotungstic acid (H3PW12O40) to prepare the nanocrystalline cellulose template. The latter was air-calcinated to remove the template and obtain nanometric WO3. Tungsten oxide was impregnated with Ni(NO3)2, which was subsequently air-calcinated to obtain the nanometric NiWO4. Elemental analysis confirmed the coexistence of nickel and tungsten, whereas thermal analysis evidenced a high thermal stability for these materials. The X-ray diffractograms displayed crystal facets of WO3 and, when Ni(II) was added, NiWO4. The transmission electron micrographs corroborated the formation of nanosized particles with average particle sizes in the range of 30 to 50 nm. Finally, to apply this material, Pt/WO3-C and Pt/WO3-NiWO4-C were prepared and used in ethanol and glycerol electro-oxidation in an alkaline medium, observing a promotional effect of the oxide and tungstate by reducing the onset potential and increasing the current density. These materials show great potential to produce clean electricity or green hydrogen, contributing to energetic transition.pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0002-5761-4754pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0001-9109-6180pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0003-1043-5748pt_BR
dc.contributor.affiliationUniversity of Brasilia, Institute of Chemistry, Laboratory of Bioprocesses Brewing Technology and Catalysis in Renewable Energypt_BR
dc.contributor.affiliationUniversity of Brasilia, Institute of Chemistry, Laboratory of Bioprocesses Brewing Technology and Catalysis in Renewable Energypt_BR
dc.contributor.affiliationUniversity of Brasilia, Institute of Chemistry, Laboratory of Chemical Processes Developmentpt_BR
dc.contributor.affiliationUniversity of Brasilia, Institute of Chemistry, Laboratory of Bioprocesses Brewing Technology and Catalysis in Renewable Energypt_BR
dc.description.unidadeInstituto de Química (IQ)pt_BR
dc.description.ppgPrograma de Pós-Graduação em Tecnologias Química e Biológicapt_BR
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