Influence of the local structure on the photocatalytic properties of zinc spinel ferrite nanoparticles

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dc.creatorLuciana Brunhara Biazati
dc.creatorLucas Lorenzini
dc.creatorSandra Aparecida Duarte Ferreira
dc.creatorArilza de Oliveira Porto
dc.creatorEustaquio Vinicius Ribeiro de Castro
dc.creatorJosé Domingos Fabris
dc.creatorMarcos Benedito José Geraldo de Freitas
dc.creatorMaria de Fátima Fontes Lelis
dc.date.accessioned2024-11-25T14:31:07Z
dc.date.accessioned2025-09-08T23:01:48Z
dc.date.available2024-11-25T14:31:07Z
dc.date.issued2021
dc.description.sponsorshipCNPq - Conselho Nacional de Desenvolvimento Científico e Tecnológico
dc.description.sponsorshipOutra Agência
dc.format.mimetypepdf
dc.identifier.doihttps://dx.doi.org/10.21577/0103-5053.20210130
dc.identifier.issn0103-5053
dc.identifier.urihttps://hdl.handle.net/1843/78247
dc.languageeng
dc.publisherUniversidade Federal de Minas Gerais
dc.relation.ispartofJournal of the Brazilian Chemical Society
dc.rightsAcesso Aberto
dc.subjectFerrita (Materiais magneticos)
dc.subjectMossbauer, Espectroscopia de
dc.subjectFotocatálise
dc.subjectNanopartículas
dc.subjectAbsorção
dc.subjectEstrutura fixa de absorção de raio X estendido (EXAFS)
dc.subject.otherFerrites
dc.subject.otherXANES
dc.subject.otherExtended X-ray absorption fine structure EXAFS
dc.subject.otherMössbauer spectroscopy
dc.subject.otherFenton process
dc.subject.otherIndigo carmine
dc.titleInfluence of the local structure on the photocatalytic properties of zinc spinel ferrite nanoparticles
dc.typeArtigo de periódico
local.citation.epage142
local.citation.issue2
local.citation.spage135
local.citation.volume33
local.description.resumoThe correlation between iron distribution in octahedral or tetrahedral sites in synthetic magnetite and zinc spinel ferrites and their catalytic properties were investigated in this work. The zinc-doped nanomagnetites were prepared by co-precipitation method and annealed at 420 °C. X-ray diffraction, UV-Vis, X-ray absorption and 57Fe Mössbauer spectroscopies were used to identify iron sites. The obtained results showed that ZnII replaces the relatively smaller FeIII cation in the tetrahedral sites, increasing the cubic lattice dimension, and this replacement remarkably enhances the catalytic effectiveness of the Zn-spinel ferrite towards the indigo carmine degradation compared to undoped magnetite. The indigo carmine degradation experiments were carried out using photo-Fenton method in which 50 mL of indigo carmine dye aqueous solutions (20 mg L−1, pH 3.0), 20 mg ZnxFe(3-x)O4, and 2.0 mL H2O2 (aqueous solution at 0.028 mol L−1) were placed under UV light at 25 °C. Under these experimental conditions the degradation rate of indigo carmine was superior to 98%.
local.identifier.orcidhttps://orcid.org/0000-0001-5367-1893
local.identifier.orcidhttps://orcid.org/0000-0001-7027-4558
local.identifier.orcidhttps://orcid.org/0000-0002-7958-5827
local.identifier.orcidhttps://orcid.org/0000-0002-8118-6155
local.identifier.orcidhttps://orcid.org/0000-0002-7888-8076
local.identifier.orcidhttps://orcid.org/0000-0002-2427-5995
local.identifier.orcidhttps://orcid.org/0000-0003-1521-774X
local.identifier.orcidhttps://orcid.org/0000-0002-4828-4482
local.publisher.countryBrasil
local.publisher.departmentICX - DEPARTAMENTO DE QUÍMICA
local.publisher.initialsUFMG
local.url.externahttps://jbcs.sbq.org.br/default.asp?ed=323

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