Rare-Earth Metals-Doped Nickel Aluminate Spinels for Photocatalytic Degradation of Organic Pollutants

Visible-light-activated photocatalysts based on samarium-doped, europium-doped, and gadolinium-doped nickel aluminates (SmNA, EuNA, GdNA) were synthesized. The spinel crystalline structures of the doped mixed metal oxides were demonstrated by X-ray diffraction (XRD) and transmission electron microsc...

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Detalhes bibliográficos
Autores: Regulska, Elzbieta, Breczko, Joanna, Basa, Anna, Dubis, Alina Teresa
Tipo de documento: artigo
Data de publicação:2020
País:España
Recursos:Universidad de Castilla-La Mancha
Repositório:RUIdeRA. Repositorio Institucional de la UCLM
OAI Identifier:oai:ruidera.uclm.es:10578/42937
Acesso em linha:https://hdl.handle.net/10578/42937
Access Level:Acceso aberto
Palavra-chave:Doped semiconductors
Nickel aluminate
Photocatalysis
Rare-earth metals
Spinel
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spelling Rare-Earth Metals-Doped Nickel Aluminate Spinels for Photocatalytic Degradation of Organic PollutantsRegulska, ElzbietaBreczko, JoannaBasa, AnnaDubis, Alina TeresaDoped semiconductorsNickel aluminatePhotocatalysisRare-earth metalsSpinelVisible-light-activated photocatalysts based on samarium-doped, europium-doped, and gadolinium-doped nickel aluminates (SmNA, EuNA, GdNA) were synthesized. The spinel crystalline structures of the doped mixed metal oxides were demonstrated by X-ray diffraction (XRD) and transmission electron microscopy (TEM) analysis. The presence of the rare-earth metals (REMs) was confirmed by the energy-dispersive X-ray (EDX) studies. Ultraviolet-visible-near-infrared (UV-Vis-NIR) spectra revealed that the REMs-doped catalysts absorb in the full solar spectrum range covering both visible and near infrared wavelengths. Scanning electron microscopy (SEM) visualized the profound morphological alterations of the doped nickel aluminate samples. Consequently, the pore volume and the Brunauer-Emmett-Teller (BET) surface area decreased, while nanoparticles sizes increased. Fourier-transform infrared spectroscopy (FTIR) exposed that surfaces of REMs-doped nickel aluminates are rich in hydroxyl groups. Finally, the photocatalytic performance was notably increased through doping nickel aluminate (NA) with REMs; the highest activity was observed for EuNA.MDPI202520252020info:eu-repo/semantics/articleapplication/pdfapplication/pdfhttps://hdl.handle.net/10578/42937reponame:RUIdeRA. Repositorio Institucional de la UCLMinstname:Universidad de Castilla-La ManchaInglésOperational Programme Development of Eastern Poland, project POPW.01.03.00-20-034/09-00Operational Programme Development of Eastern Poland project POPW.01.03.00-20-004/11-00info:eu-repo/semantics/openAccessoai:ruidera.uclm.es:10578/429372026-05-27T07:36:41Z
dc.title.none.fl_str_mv Rare-Earth Metals-Doped Nickel Aluminate Spinels for Photocatalytic Degradation of Organic Pollutants
title Rare-Earth Metals-Doped Nickel Aluminate Spinels for Photocatalytic Degradation of Organic Pollutants
spellingShingle Rare-Earth Metals-Doped Nickel Aluminate Spinels for Photocatalytic Degradation of Organic Pollutants
Regulska, Elzbieta
Doped semiconductors
Nickel aluminate
Photocatalysis
Rare-earth metals
Spinel
title_short Rare-Earth Metals-Doped Nickel Aluminate Spinels for Photocatalytic Degradation of Organic Pollutants
title_full Rare-Earth Metals-Doped Nickel Aluminate Spinels for Photocatalytic Degradation of Organic Pollutants
title_fullStr Rare-Earth Metals-Doped Nickel Aluminate Spinels for Photocatalytic Degradation of Organic Pollutants
title_full_unstemmed Rare-Earth Metals-Doped Nickel Aluminate Spinels for Photocatalytic Degradation of Organic Pollutants
title_sort Rare-Earth Metals-Doped Nickel Aluminate Spinels for Photocatalytic Degradation of Organic Pollutants
dc.creator.none.fl_str_mv Regulska, Elzbieta
Breczko, Joanna
Basa, Anna
Dubis, Alina Teresa
author Regulska, Elzbieta
author_facet Regulska, Elzbieta
Breczko, Joanna
Basa, Anna
Dubis, Alina Teresa
author_role author
author2 Breczko, Joanna
Basa, Anna
Dubis, Alina Teresa
author2_role author
author
author
dc.subject.none.fl_str_mv Doped semiconductors
Nickel aluminate
Photocatalysis
Rare-earth metals
Spinel
topic Doped semiconductors
Nickel aluminate
Photocatalysis
Rare-earth metals
Spinel
description Visible-light-activated photocatalysts based on samarium-doped, europium-doped, and gadolinium-doped nickel aluminates (SmNA, EuNA, GdNA) were synthesized. The spinel crystalline structures of the doped mixed metal oxides were demonstrated by X-ray diffraction (XRD) and transmission electron microscopy (TEM) analysis. The presence of the rare-earth metals (REMs) was confirmed by the energy-dispersive X-ray (EDX) studies. Ultraviolet-visible-near-infrared (UV-Vis-NIR) spectra revealed that the REMs-doped catalysts absorb in the full solar spectrum range covering both visible and near infrared wavelengths. Scanning electron microscopy (SEM) visualized the profound morphological alterations of the doped nickel aluminate samples. Consequently, the pore volume and the Brunauer-Emmett-Teller (BET) surface area decreased, while nanoparticles sizes increased. Fourier-transform infrared spectroscopy (FTIR) exposed that surfaces of REMs-doped nickel aluminates are rich in hydroxyl groups. Finally, the photocatalytic performance was notably increased through doping nickel aluminate (NA) with REMs; the highest activity was observed for EuNA.
publishDate 2020
dc.date.none.fl_str_mv 2020
2025
2025
dc.type.none.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://hdl.handle.net/10578/42937
url https://hdl.handle.net/10578/42937
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Operational Programme Development of Eastern Poland, project POPW.01.03.00-20-034/09-00
Operational Programme Development of Eastern Poland project POPW.01.03.00-20-004/11-00
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv MDPI
publisher.none.fl_str_mv MDPI
dc.source.none.fl_str_mv reponame:RUIdeRA. Repositorio Institucional de la UCLM
instname:Universidad de Castilla-La Mancha
instname_str Universidad de Castilla-La Mancha
reponame_str RUIdeRA. Repositorio Institucional de la UCLM
collection RUIdeRA. Repositorio Institucional de la UCLM
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,811543

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