Influence of the Local Structure on the Photocatalytic Properties of Zinc Spinel Ferrite Nanoparticles
Autor(a) principal: | |
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Data de Publicação: | 2022 |
Outros Autores: | , , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Journal of the Brazilian Chemical Society (Online) |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532022000200135 |
Resumo: | The 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%. |
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Influence of the Local Structure on the Photocatalytic Properties of Zinc Spinel Ferrite NanoparticlesferritesXANESEXAFSMössbauer spectroscopyFenton processindigo carmineThe 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%.Sociedade Brasileira de Química2022-02-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532022000200135Journal of the Brazilian Chemical Society v.33 n.2 2022reponame:Journal of the Brazilian Chemical Society (Online)instname:Sociedade Brasileira de Química (SBQ)instacron:SBQ10.21577/0103-5053.20210130info:eu-repo/semantics/openAccessBiazati,Luciana B.Lorenzini,LucasFerreira,Sandra A. D.Porto,Arilza O.Castro,Eustáquio V. R. deFabris,José D.Freitas,Marcos B. J. G. deLelis,Maria de Fátima F.eng2022-01-21T00:00:00Zoai:scielo:S0103-50532022000200135Revistahttp://jbcs.sbq.org.brONGhttps://old.scielo.br/oai/scielo-oai.php||office@jbcs.sbq.org.br1678-47900103-5053opendoar:2022-01-21T00:00Journal of the Brazilian Chemical Society (Online) - Sociedade Brasileira de Química (SBQ)false |
dc.title.none.fl_str_mv |
Influence of the Local Structure on the Photocatalytic Properties of Zinc Spinel Ferrite Nanoparticles |
title |
Influence of the Local Structure on the Photocatalytic Properties of Zinc Spinel Ferrite Nanoparticles |
spellingShingle |
Influence of the Local Structure on the Photocatalytic Properties of Zinc Spinel Ferrite Nanoparticles Biazati,Luciana B. ferrites XANES EXAFS Mössbauer spectroscopy Fenton process indigo carmine |
title_short |
Influence of the Local Structure on the Photocatalytic Properties of Zinc Spinel Ferrite Nanoparticles |
title_full |
Influence of the Local Structure on the Photocatalytic Properties of Zinc Spinel Ferrite Nanoparticles |
title_fullStr |
Influence of the Local Structure on the Photocatalytic Properties of Zinc Spinel Ferrite Nanoparticles |
title_full_unstemmed |
Influence of the Local Structure on the Photocatalytic Properties of Zinc Spinel Ferrite Nanoparticles |
title_sort |
Influence of the Local Structure on the Photocatalytic Properties of Zinc Spinel Ferrite Nanoparticles |
author |
Biazati,Luciana B. |
author_facet |
Biazati,Luciana B. Lorenzini,Lucas Ferreira,Sandra A. D. Porto,Arilza O. Castro,Eustáquio V. R. de Fabris,José D. Freitas,Marcos B. J. G. de Lelis,Maria de Fátima F. |
author_role |
author |
author2 |
Lorenzini,Lucas Ferreira,Sandra A. D. Porto,Arilza O. Castro,Eustáquio V. R. de Fabris,José D. Freitas,Marcos B. J. G. de Lelis,Maria de Fátima F. |
author2_role |
author author author author author author author |
dc.contributor.author.fl_str_mv |
Biazati,Luciana B. Lorenzini,Lucas Ferreira,Sandra A. D. Porto,Arilza O. Castro,Eustáquio V. R. de Fabris,José D. Freitas,Marcos B. J. G. de Lelis,Maria de Fátima F. |
dc.subject.por.fl_str_mv |
ferrites XANES EXAFS Mössbauer spectroscopy Fenton process indigo carmine |
topic |
ferrites XANES EXAFS Mössbauer spectroscopy Fenton process indigo carmine |
description |
The 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%. |
publishDate |
2022 |
dc.date.none.fl_str_mv |
2022-02-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532022000200135 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532022000200135 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.21577/0103-5053.20210130 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
text/html |
dc.publisher.none.fl_str_mv |
Sociedade Brasileira de Química |
publisher.none.fl_str_mv |
Sociedade Brasileira de Química |
dc.source.none.fl_str_mv |
Journal of the Brazilian Chemical Society v.33 n.2 2022 reponame:Journal of the Brazilian Chemical Society (Online) instname:Sociedade Brasileira de Química (SBQ) instacron:SBQ |
instname_str |
Sociedade Brasileira de Química (SBQ) |
instacron_str |
SBQ |
institution |
SBQ |
reponame_str |
Journal of the Brazilian Chemical Society (Online) |
collection |
Journal of the Brazilian Chemical Society (Online) |
repository.name.fl_str_mv |
Journal of the Brazilian Chemical Society (Online) - Sociedade Brasileira de Química (SBQ) |
repository.mail.fl_str_mv |
||office@jbcs.sbq.org.br |
_version_ |
1750318184785772544 |