Synergistic dual catalysis for the photoinduced conversion of glycerol into solketal through defect engineered TT-Nb2O5 nanoparticles

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dc.creatorGustavo Henrique de Magalhães Gomes
dc.creatorJose Balena Gabriel Filho
dc.creatorCarlos Giovani Oliveira Bruziquesi
dc.creatorHenrique Fernandes Vieira Victoria
dc.creatorKlaus Wilhelm Heinrich Krambrock
dc.creatorLuiz Carlos Alves de Oliveira
dc.creatorNelcy Della Santina Mohallem
dc.date.accessioned2025-02-25T16:52:27Z
dc.date.accessioned2025-09-09T01:19:32Z
dc.date.available2025-02-25T16:52:27Z
dc.date.issued2022
dc.description.sponsorshipCNPq - Conselho Nacional de Desenvolvimento Científico e Tecnológico
dc.description.sponsorshipFAPEMIG - Fundação de Amparo à Pesquisa do Estado de Minas Gerais
dc.identifier.doihttps://doi.org/10.2139/ssrn.4127829
dc.identifier.urihttps://hdl.handle.net/1843/80422
dc.languageeng
dc.publisherUniversidade Federal de Minas Gerais
dc.relation.ispartofSSRN
dc.rightsAcesso Restrito
dc.subjectNióbio
dc.subjectFotocatálise
dc.subject.otherNiobium pentoxide
dc.subject.otherCrystal structure
dc.subject.otherDefects
dc.subject.otherPhotocatalysis
dc.subject.otherGlycerol
dc.subject.otherSolketal
dc.titleSynergistic dual catalysis for the photoinduced conversion of glycerol into solketal through defect engineered TT-Nb2O5 nanoparticles
dc.typeArtigo de periódico
local.citation.epage47
local.citation.spage1
local.description.resumoDefect engineering of Nb2O5 nanoparticles is an approachable way to improve photocatalytic performance. TT-Nb2O5 nanoparticles were synthesized using the Pechini method followed by calcination, producing line defects in the crystalline structure and single-electron-trapped oxygen vacancies (SETOVs). The structural results demonstrate that TT-Nb2O5 calcined at 500 °C presents a superlattice orthorhombic structure with a specific surface area between 45-90 m².g-1 and mesoporous network structure. Electronic properties analysis revealed that the TT-Nb2O5 nanoparticles synthesized by the Pechini method (NbPEG and NbEG) have different concentrations of SETOVs in their structure according to the polymerizing agent used in the synthesis, ethylene glycol and polyethylene glycol for NbEG and NbPEG, respectively. The unprecedented photochemical acetalization of glycerol into solketal, employing isopropyl alcohol instead of acetone, was described. The textural properties and the higher concentration of SETOVs significantly improved the photocatalytic performance of NbEG, allowing a synergistic dual catalytic behavior, where the electron accumulation process on the surface of the semiconductor took place, inducing proton generation, which improved the conversion of glycerol (47.8%) as well as the selectivity to solketal (69.8%).
local.identifier.orcidhttps://orcid.org/0000-0002-2944-7039
local.identifier.orcidhttps://orcid.org/0000-0003-1641-6476
local.identifier.orcidhttps://orcid.org/0000-0002-7022-4283
local.identifier.orcidhttps://orcid.org/0000-0002-4846-2189
local.identifier.orcidhttps://orcid.org/0000-0002-7562-0285
local.identifier.orcidhttps://orcid.org/0000-0002-9094-4536
local.publisher.countryBrasil
local.publisher.departmentICX - DEPARTAMENTO DE FÍSICA
local.publisher.initialsUFMG
local.url.externahttps://papers.ssrn.com/sol3/papers.cfm?abstract_id=4127829

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