Effect of Iion‐doping on the structure and photocatalytic activity of TiO2 nanoparticles

Detalhes bibliográficos
Autor(a) principal: Afonso, Cátia
Data de Publicação: 2022
Outros Autores: Júnior, Orlando Sousa Lima, Segundo, Iran Gomes Rocha, Júnior, Salmon Landi, Margalho, Élida, Homem, Natália Cândido, Pereira, Mário, Costa, Manuel F. M., Freitas, Elisabete, Carneiro, Joaquim A. O.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: https://hdl.handle.net/1822/81569
Resumo: This research reports a simple, innovative, and low-cost doping method of TiO2 nanoparticles presenting the effects of calcination and the weight ratio of TiO2:FeCl3 (1:0.33–1:4.5). The photocatalytic activity of the nanomaterials was investigated by decolorizing Rhodamine B (RhB) dye in an aqueous solution. The main results showed that there is anatase-to-rutile transformation after the calcination process. The Fe-doped process modified the TiO2 spectrum and showed a connection in the Ti–O–Fe vibration. The particle size is within the nanometer range, between 20–51 nm, except for calcined TiO2. The inclusion of Fe in TiO2 decreased the band gap energy from 3.16 (reference) up to 2.06 eV (1:3). Additionally, after the calcination, there was a decrease in this value from 3.03 eV (reference) up to 1.95 eV (1:1.6). The TiO2, with a ratio of (1:1.6), showed the highest activity in the photocatalytic degradation of RhB with an efficiency of 93.8% after 3 h of irradiation.
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spelling Effect of Iion‐doping on the structure and photocatalytic activity of TiO2 nanoparticlesPhotocatalytic degradationIron dopingTiO2SemiconductorBand gap energyDiffuse reflectanceCo-precipitation methodCiências Naturais::Ciências FísicasScience & TechnologyThis research reports a simple, innovative, and low-cost doping method of TiO2 nanoparticles presenting the effects of calcination and the weight ratio of TiO2:FeCl3 (1:0.33–1:4.5). The photocatalytic activity of the nanomaterials was investigated by decolorizing Rhodamine B (RhB) dye in an aqueous solution. The main results showed that there is anatase-to-rutile transformation after the calcination process. The Fe-doped process modified the TiO2 spectrum and showed a connection in the Ti–O–Fe vibration. The particle size is within the nanometer range, between 20–51 nm, except for calcined TiO2. The inclusion of Fe in TiO2 decreased the band gap energy from 3.16 (reference) up to 2.06 eV (1:3). Additionally, after the calcination, there was a decrease in this value from 3.03 eV (reference) up to 1.95 eV (1:1.6). The TiO2, with a ratio of (1:1.6), showed the highest activity in the photocatalytic degradation of RhB with an efficiency of 93.8% after 3 h of irradiation.This research was partially funded by the Portuguese Foundation for Science and Technology (FCT), NanoAir PTDC/FISMAC/6606/2020, MicroCoolPav EXPL/EQU-EQU/1110/2021, UIDB/04650/2020, and UIDB/04029/2020. This research was supported by the doctoral Grant PRT/BD/154269/2022 financed by Portuguese Foundation for Science and Technology (FCT), and with funds from POR Norte - Portugal 2020 and State Budget, under MIT Portugal Program. The third author would like to acknowledge the FCT for funding (2022.00763.CEECIND).Multidisciplinary Digital Publishing Institute (MDPI)Universidade do MinhoAfonso, CátiaJúnior, Orlando Sousa LimaSegundo, Iran Gomes RochaJúnior, Salmon LandiMargalho, ÉlidaHomem, Natália CândidoPereira, MárioCosta, Manuel F. M.Freitas, ElisabeteCarneiro, Joaquim A. O.2022-12-272022-12-27T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/1822/81569engEffect of Iron‐Doping on the Structure and Photocatalytic Activity of TiO2 Nanoparticles. Afonso, C.; Lima, O., Jr.; Segundo, I.R.; Landi, S., Jr.; Margalho, É.; Homem, N.; Pereira, M.; Costa, M.F.M.; Freitas, E.; Carneiro, J. Catalysts 2023, 13, 58, 27 December 202210.3390/catal1301005858https://www.mdpi.com/2073-4344/13/1/58info: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:RCAAP2023-07-21T12:21:44ZPortal AgregadorONG
dc.title.none.fl_str_mv Effect of Iion‐doping on the structure and photocatalytic activity of TiO2 nanoparticles
title Effect of Iion‐doping on the structure and photocatalytic activity of TiO2 nanoparticles
spellingShingle Effect of Iion‐doping on the structure and photocatalytic activity of TiO2 nanoparticles
Afonso, Cátia
Photocatalytic degradation
Iron doping
TiO2
Semiconductor
Band gap energy
Diffuse reflectance
Co-precipitation method
Ciências Naturais::Ciências Físicas
Science & Technology
title_short Effect of Iion‐doping on the structure and photocatalytic activity of TiO2 nanoparticles
title_full Effect of Iion‐doping on the structure and photocatalytic activity of TiO2 nanoparticles
title_fullStr Effect of Iion‐doping on the structure and photocatalytic activity of TiO2 nanoparticles
title_full_unstemmed Effect of Iion‐doping on the structure and photocatalytic activity of TiO2 nanoparticles
title_sort Effect of Iion‐doping on the structure and photocatalytic activity of TiO2 nanoparticles
author Afonso, Cátia
author_facet Afonso, Cátia
Júnior, Orlando Sousa Lima
Segundo, Iran Gomes Rocha
Júnior, Salmon Landi
Margalho, Élida
Homem, Natália Cândido
Pereira, Mário
Costa, Manuel F. M.
Freitas, Elisabete
Carneiro, Joaquim A. O.
author_role author
author2 Júnior, Orlando Sousa Lima
Segundo, Iran Gomes Rocha
Júnior, Salmon Landi
Margalho, Élida
Homem, Natália Cândido
Pereira, Mário
Costa, Manuel F. M.
Freitas, Elisabete
Carneiro, Joaquim A. O.
author2_role author
author
author
author
author
author
author
author
author
dc.contributor.none.fl_str_mv Universidade do Minho
dc.contributor.author.fl_str_mv Afonso, Cátia
Júnior, Orlando Sousa Lima
Segundo, Iran Gomes Rocha
Júnior, Salmon Landi
Margalho, Élida
Homem, Natália Cândido
Pereira, Mário
Costa, Manuel F. M.
Freitas, Elisabete
Carneiro, Joaquim A. O.
dc.subject.por.fl_str_mv Photocatalytic degradation
Iron doping
TiO2
Semiconductor
Band gap energy
Diffuse reflectance
Co-precipitation method
Ciências Naturais::Ciências Físicas
Science & Technology
topic Photocatalytic degradation
Iron doping
TiO2
Semiconductor
Band gap energy
Diffuse reflectance
Co-precipitation method
Ciências Naturais::Ciências Físicas
Science & Technology
description This research reports a simple, innovative, and low-cost doping method of TiO2 nanoparticles presenting the effects of calcination and the weight ratio of TiO2:FeCl3 (1:0.33–1:4.5). The photocatalytic activity of the nanomaterials was investigated by decolorizing Rhodamine B (RhB) dye in an aqueous solution. The main results showed that there is anatase-to-rutile transformation after the calcination process. The Fe-doped process modified the TiO2 spectrum and showed a connection in the Ti–O–Fe vibration. The particle size is within the nanometer range, between 20–51 nm, except for calcined TiO2. The inclusion of Fe in TiO2 decreased the band gap energy from 3.16 (reference) up to 2.06 eV (1:3). Additionally, after the calcination, there was a decrease in this value from 3.03 eV (reference) up to 1.95 eV (1:1.6). The TiO2, with a ratio of (1:1.6), showed the highest activity in the photocatalytic degradation of RhB with an efficiency of 93.8% after 3 h of irradiation.
publishDate 2022
dc.date.none.fl_str_mv 2022-12-27
2022-12-27T00:00:00Z
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 https://hdl.handle.net/1822/81569
url https://hdl.handle.net/1822/81569
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Effect of Iron‐Doping on the Structure and Photocatalytic Activity of TiO2 Nanoparticles. Afonso, C.; Lima, O., Jr.; Segundo, I.R.; Landi, S., Jr.; Margalho, É.; Homem, N.; Pereira, M.; Costa, M.F.M.; Freitas, E.; Carneiro, J. Catalysts 2023, 13, 58, 27 December 2022
10.3390/catal13010058
58
https://www.mdpi.com/2073-4344/13/1/58
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 Multidisciplinary Digital Publishing Institute (MDPI)
publisher.none.fl_str_mv Multidisciplinary Digital Publishing Institute (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
repository.mail.fl_str_mv
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