Magnetic nanoparticles of zinc/calcium ferrite decorated with silver for photodegradation of dyes

Detalhes bibliográficos
Autor(a) principal: Fernandes, Ricardo J. C.
Data de Publicação: 2019
Outros Autores: Magalhães, Carlos A. B., Amorim, Carlos O., Amaral, Vítor S., Almeida, B. G., Castanheira, Elisabete M. S., Coutinho, Paulo J. G.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/1822/61971
Resumo: Magnetic nanoparticles of zinc/calcium ferrite and decorated with silver were prepared by coprecipitation method. The obtained nanoparticles were characterized by UV/Visible absorption, XRD, TEM and SQUID. The mixed zinc/calcium ferrites exhibit an optical band gap of 1.78 eV. HR-TEM imaging showed rectangular nanoplate shapes with sizes of 10 ± 3 nm and aspect ratio mainly between 1 and 1.5. Magnetic measurements indicated a superparamagnetic behavior. XRD diffractograms allowed a size estimation of 4 nm, which was associated with the nanoplate thickness. The silver-decorated zinc/calcium ferrite nanoparticles were successfully employed in the photodegradation of a model dye (Rhodamine B) and industrial textile dyes (CI Reactive Red 195, CI Reactive Blue 250 and CI Reactive Yellow 145). The nanosystems developed exhibited promising results for industrial application in effluent photoremediation using visible light, with the possibility of magnetic recovery.
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spelling Magnetic nanoparticles of zinc/calcium ferrite decorated with silver for photodegradation of dyesMagnetic nanoparticlesZinc/calcium ferriteSilver decorated nanoparticlesPhotodegradationTextile dyesEngenharia e Tecnologia::Engenharia dos MateriaisScience & TechnologyMagnetic nanoparticles of zinc/calcium ferrite and decorated with silver were prepared by coprecipitation method. The obtained nanoparticles were characterized by UV/Visible absorption, XRD, TEM and SQUID. The mixed zinc/calcium ferrites exhibit an optical band gap of 1.78 eV. HR-TEM imaging showed rectangular nanoplate shapes with sizes of 10 ± 3 nm and aspect ratio mainly between 1 and 1.5. Magnetic measurements indicated a superparamagnetic behavior. XRD diffractograms allowed a size estimation of 4 nm, which was associated with the nanoplate thickness. The silver-decorated zinc/calcium ferrite nanoparticles were successfully employed in the photodegradation of a model dye (Rhodamine B) and industrial textile dyes (CI Reactive Red 195, CI Reactive Blue 250 and CI Reactive Yellow 145). The nanosystems developed exhibited promising results for industrial application in effluent photoremediation using visible light, with the possibility of magnetic recovery.European Fund of Regional Development (FEDER), COMPETE2020, Portugal2020This research was funded by the Portuguese Foundation for Science and Technology (FCT) in the framework of the Strategic Funding of CF-UM-UP (UID/FIS/04650/2019) and through the research project PTDC/QUI-QFI/ 28020/2017 (POCI-01-0145-FEDER-028020), financed by European Fund of Regional Development (FEDER), COMPETE2020 and Portugal2020. The magnetic measurements were supported by projects UTAP-EXPL/ NTec/0046/2017, NORTE-01-0145-FEDER-028538 and PTDC/FIS-MAC/29454/2017. The APC was also funded by FCT.MDPIUniversidade do MinhoFernandes, Ricardo J. C.Magalhães, Carlos A. B.Amorim, Carlos O.Amaral, Vítor S.Almeida, B. G.Castanheira, Elisabete M. S.Coutinho, Paulo J. G.2019-10-312019-10-31T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/1822/61971engMaterials, 12 (21) (2019) 35821996-194410.3390/ma12213582https://www.mdpi.com/1996-1944/12/21/3582info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2023-07-21T12:50:30Zoai:repositorium.sdum.uminho.pt:1822/61971Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T19:49:13.821561Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse
dc.title.none.fl_str_mv Magnetic nanoparticles of zinc/calcium ferrite decorated with silver for photodegradation of dyes
title Magnetic nanoparticles of zinc/calcium ferrite decorated with silver for photodegradation of dyes
spellingShingle Magnetic nanoparticles of zinc/calcium ferrite decorated with silver for photodegradation of dyes
Fernandes, Ricardo J. C.
Magnetic nanoparticles
Zinc/calcium ferrite
Silver decorated nanoparticles
Photodegradation
Textile dyes
Engenharia e Tecnologia::Engenharia dos Materiais
Science & Technology
title_short Magnetic nanoparticles of zinc/calcium ferrite decorated with silver for photodegradation of dyes
title_full Magnetic nanoparticles of zinc/calcium ferrite decorated with silver for photodegradation of dyes
title_fullStr Magnetic nanoparticles of zinc/calcium ferrite decorated with silver for photodegradation of dyes
title_full_unstemmed Magnetic nanoparticles of zinc/calcium ferrite decorated with silver for photodegradation of dyes
title_sort Magnetic nanoparticles of zinc/calcium ferrite decorated with silver for photodegradation of dyes
author Fernandes, Ricardo J. C.
author_facet Fernandes, Ricardo J. C.
Magalhães, Carlos A. B.
Amorim, Carlos O.
Amaral, Vítor S.
Almeida, B. G.
Castanheira, Elisabete M. S.
Coutinho, Paulo J. G.
author_role author
author2 Magalhães, Carlos A. B.
Amorim, Carlos O.
Amaral, Vítor S.
Almeida, B. G.
Castanheira, Elisabete M. S.
Coutinho, Paulo J. G.
author2_role author
author
author
author
author
author
dc.contributor.none.fl_str_mv Universidade do Minho
dc.contributor.author.fl_str_mv Fernandes, Ricardo J. C.
Magalhães, Carlos A. B.
Amorim, Carlos O.
Amaral, Vítor S.
Almeida, B. G.
Castanheira, Elisabete M. S.
Coutinho, Paulo J. G.
dc.subject.por.fl_str_mv Magnetic nanoparticles
Zinc/calcium ferrite
Silver decorated nanoparticles
Photodegradation
Textile dyes
Engenharia e Tecnologia::Engenharia dos Materiais
Science & Technology
topic Magnetic nanoparticles
Zinc/calcium ferrite
Silver decorated nanoparticles
Photodegradation
Textile dyes
Engenharia e Tecnologia::Engenharia dos Materiais
Science & Technology
description Magnetic nanoparticles of zinc/calcium ferrite and decorated with silver were prepared by coprecipitation method. The obtained nanoparticles were characterized by UV/Visible absorption, XRD, TEM and SQUID. The mixed zinc/calcium ferrites exhibit an optical band gap of 1.78 eV. HR-TEM imaging showed rectangular nanoplate shapes with sizes of 10 ± 3 nm and aspect ratio mainly between 1 and 1.5. Magnetic measurements indicated a superparamagnetic behavior. XRD diffractograms allowed a size estimation of 4 nm, which was associated with the nanoplate thickness. The silver-decorated zinc/calcium ferrite nanoparticles were successfully employed in the photodegradation of a model dye (Rhodamine B) and industrial textile dyes (CI Reactive Red 195, CI Reactive Blue 250 and CI Reactive Yellow 145). The nanosystems developed exhibited promising results for industrial application in effluent photoremediation using visible light, with the possibility of magnetic recovery.
publishDate 2019
dc.date.none.fl_str_mv 2019-10-31
2019-10-31T00:00:00Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://hdl.handle.net/1822/61971
url http://hdl.handle.net/1822/61971
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Materials, 12 (21) (2019) 3582
1996-1944
10.3390/ma12213582
https://www.mdpi.com/1996-1944/12/21/3582
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv MDPI
publisher.none.fl_str_mv MDPI
dc.source.none.fl_str_mv reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron:RCAAP
instname_str Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron_str RCAAP
institution RCAAP
reponame_str Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
collection Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
repository.name.fl_str_mv Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
repository.mail.fl_str_mv
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