Synthesis of NiMoO4 ceramics by proteic sol-gel method and investigation of their catalytic properties in hydrogen production

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dc.creatorMaíra Vieira da Silva
dc.creatorHumberto Vieira Fajardo
dc.creatorThenner Silva Rodrigues
dc.creatorFelipe Anchieta e Silva
dc.creatorVanderlei Sérgio Bergamaschi
dc.creatorAnderson Dias
dc.creatorKisla Prislen Félix Siqueira
dc.date.accessioned2023-12-19T14:11:58Z
dc.date.accessioned2025-09-09T01:09:42Z
dc.date.available2023-12-19T14:11:58Z
dc.date.issued2021
dc.description.sponsorshipCNPq - Conselho Nacional de Desenvolvimento Científico e Tecnológico
dc.description.sponsorshipFAPEMIG - Fundação de Amparo à Pesquisa do Estado de Minas Gerais
dc.description.sponsorshipOutra Agência
dc.identifier.doihttps://doi.org/10.1016/j.matchemphys.2021.124301
dc.identifier.issn0254-0584
dc.identifier.urihttps://hdl.handle.net/1843/62085
dc.languageeng
dc.publisherUniversidade Federal de Minas Gerais
dc.relation.ispartofMaterials Chemistry and Physics
dc.rightsAcesso Restrito
dc.subjectMaterial cerâmico
dc.subjectHidrogênio como combustível
dc.subjectCompostos de molibdênio
dc.subjectCatalisadores
dc.subjectRaios X - Difração
dc.subjectRaman, Espectroscopia de
dc.subjectQuímica ambiental
dc.subject.otherHydrogen production
dc.subject.otherMolybdates
dc.subject.otherSol-gel chemistry
dc.subject.otherCatalytic properties
dc.titleSynthesis of NiMoO4 ceramics by proteic sol-gel method and investigation of their catalytic properties in hydrogen production
dc.typeArtigo de periódico
local.citation.spage124301
local.citation.volume262
local.description.resumoA proteic sol-gel route was used in the production of NiMoO4 catalysts, which used edible gelatin as a precursor. The triple helix structure of a protein in contact with identical structures acquires an unfolded form, which favors the interaction of the reactive groups of the gelatin (NH3+ and COO−) with the metallic ions (MoO42− and Ni2+). The synthesized catalysts were thoroughly characterized using techniques such as X-ray diffraction, thermogravimetric and differential thermal analysis, Raman scattering, scanning and transmission electron microscopies, UV–Vis spectroscopy, and colorimetry. The results showed that it is possible to prepare the phase-pure α-NiMoO4 polymorph only at temperatures above 700 °C, while a mixture of the polymorphs α and β were obtained at lower temperatures. The synthesized materials calcined at 300, 500, and 700 °C have their catalytic potentials tested in the ethanol steam reforming reaction aiming the production of hydrogen and presented a good performance. The results indicated that among tested materials, the sample calcined at 700 °C exhibited the highest stability, activity, and best selectivity relative to the product of interest.
local.identifier.orcidhttps://orcid.org/0000-0002-4062-6206
local.identifier.orcidhttps://orcid.org/0000-0001-9742-5045
local.identifier.orcidhttps://orcid.org/0000-0002-6344-3103
local.identifier.orcidhttps://orcid.org/0000-0001-7413-1087
local.publisher.countryBrasil
local.publisher.departmentICX - DEPARTAMENTO DE QUÍMICA
local.publisher.initialsUFMG
local.url.externahttps://www.sciencedirect.com/science/article/pii/S0254058421000845

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