<i>Ilex paraguariensis</i> Extract-Coated Magnetite Nanoparticles: A Sustainable Nano-adsorbent and Antioxidant

Autores
Mercado Castro, Donaldo Fabio; Caregnato, Paula; Villata, Laura Sofía; González, Mónica Cristina
Año de publicación
2017
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Single-crystal 15 nm size magnetite nanoparticles were synthesized and coated with Yerba Mate (Ilex paraguariensis) extract to evaluate their use as versatile antioxidant magnetic nanoadsorbents. The obtained particles, Mnp@YM, were found to be composed of a crystalline magnetite core surrounded by a shell composed of Fe3O4, FeO, and Fe2O3 oxides. YM extract resulted an effective protective coating for Mnp incorporating surface carboxylates, phenols, and organic N groups which improve the particles stability in aqueous suspensions. Mnp@YM antioxidant capacity (1.8 µM Trolox equivalent per 0.1 mg YM coating contained in 1 mgL−1 particle suspension) is of the order reported for polyphenols. SO4 ⋅− scavenging rate constant (1.5×104 g−1 L s−1 ) is within the diffusion controlled regime for 15 nm spherical nanoparticles with homogeneously distributed reactive sites. Mnp@YM reversibly adsorbs MB with maximum adsorption of 50 mg g−1 . As a consequence of these capacities, Mnp@YM resulted effective in preventing MB oxidation by peroxodisulfate.
Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas
Materia
Química
Radical scavenger
Sulfate radicals
ABTS+•
Nanoadsorbent
Methylene blue
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by/4.0/
Repositorio
SEDICI (UNLP)
Institución
Universidad Nacional de La Plata
OAI Identificador
oai:sedici.unlp.edu.ar:10915/133110
Acceder
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oai_identifier_str oai:sedici.unlp.edu.ar:10915/133110
network_acronym_str SEDICI
repository_id_str 1329
network_name_str SEDICI (UNLP)
spelling <i>Ilex paraguariensis</i> Extract-Coated Magnetite Nanoparticles: A Sustainable Nano-adsorbent and AntioxidantMercado Castro, Donaldo FabioCaregnato, PaulaVillata, Laura SofíaGonzález, Mónica CristinaQuímicaRadical scavengerSulfate radicalsABTS+•NanoadsorbentMethylene blueSingle-crystal 15 nm size magnetite nanoparticles were synthesized and coated with Yerba Mate (Ilex paraguariensis) extract to evaluate their use as versatile antioxidant magnetic nanoadsorbents. The obtained particles, Mnp@YM, were found to be composed of a crystalline magnetite core surrounded by a shell composed of Fe3O4, FeO, and Fe2O3 oxides. YM extract resulted an effective protective coating for Mnp incorporating surface carboxylates, phenols, and organic N groups which improve the particles stability in aqueous suspensions. Mnp@YM antioxidant capacity (1.8 µM Trolox equivalent per 0.1 mg YM coating contained in 1 mgL−1 particle suspension) is of the order reported for polyphenols. SO4 ⋅− scavenging rate constant (1.5×104 g−1 L s−1 ) is within the diffusion controlled regime for 15 nm spherical nanoparticles with homogeneously distributed reactive sites. Mnp@YM reversibly adsorbs MB with maximum adsorption of 50 mg g−1 . As a consequence of these capacities, Mnp@YM resulted effective in preventing MB oxidation by peroxodisulfate.Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas2017-12-06info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf519-527http://sedici.unlp.edu.ar/handle/10915/133110enginfo:eu-repo/semantics/altIdentifier/issn/1574-1443info:eu-repo/semantics/altIdentifier/issn/1574-1451info:eu-repo/semantics/altIdentifier/doi/10.1007/s10904-017-0757-8info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by/4.0/Creative Commons Attribution 4.0 International (CC BY 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2026-02-05T12:17:47Zoai:sedici.unlp.edu.ar:10915/133110Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292026-02-05 12:17:48.045SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv <i>Ilex paraguariensis</i> Extract-Coated Magnetite Nanoparticles: A Sustainable Nano-adsorbent and Antioxidant
title <i>Ilex paraguariensis</i> Extract-Coated Magnetite Nanoparticles: A Sustainable Nano-adsorbent and Antioxidant
spellingShingle <i>Ilex paraguariensis</i> Extract-Coated Magnetite Nanoparticles: A Sustainable Nano-adsorbent and Antioxidant
Mercado Castro, Donaldo Fabio
Química
Radical scavenger
Sulfate radicals
ABTS+•
Nanoadsorbent
Methylene blue
title_short <i>Ilex paraguariensis</i> Extract-Coated Magnetite Nanoparticles: A Sustainable Nano-adsorbent and Antioxidant
title_full <i>Ilex paraguariensis</i> Extract-Coated Magnetite Nanoparticles: A Sustainable Nano-adsorbent and Antioxidant
title_fullStr <i>Ilex paraguariensis</i> Extract-Coated Magnetite Nanoparticles: A Sustainable Nano-adsorbent and Antioxidant
title_full_unstemmed <i>Ilex paraguariensis</i> Extract-Coated Magnetite Nanoparticles: A Sustainable Nano-adsorbent and Antioxidant
title_sort <i>Ilex paraguariensis</i> Extract-Coated Magnetite Nanoparticles: A Sustainable Nano-adsorbent and Antioxidant
dc.creator.none.fl_str_mv Mercado Castro, Donaldo Fabio
Caregnato, Paula
Villata, Laura Sofía
González, Mónica Cristina
author Mercado Castro, Donaldo Fabio
author_facet Mercado Castro, Donaldo Fabio
Caregnato, Paula
Villata, Laura Sofía
González, Mónica Cristina
author_role author
author2 Caregnato, Paula
Villata, Laura Sofía
González, Mónica Cristina
author2_role author
author
author
dc.subject.none.fl_str_mv Química
Radical scavenger
Sulfate radicals
ABTS+•
Nanoadsorbent
Methylene blue
topic Química
Radical scavenger
Sulfate radicals
ABTS+•
Nanoadsorbent
Methylene blue
dc.description.none.fl_txt_mv Single-crystal 15 nm size magnetite nanoparticles were synthesized and coated with Yerba Mate (Ilex paraguariensis) extract to evaluate their use as versatile antioxidant magnetic nanoadsorbents. The obtained particles, Mnp@YM, were found to be composed of a crystalline magnetite core surrounded by a shell composed of Fe3O4, FeO, and Fe2O3 oxides. YM extract resulted an effective protective coating for Mnp incorporating surface carboxylates, phenols, and organic N groups which improve the particles stability in aqueous suspensions. Mnp@YM antioxidant capacity (1.8 µM Trolox equivalent per 0.1 mg YM coating contained in 1 mgL−1 particle suspension) is of the order reported for polyphenols. SO4 ⋅− scavenging rate constant (1.5×104 g−1 L s−1 ) is within the diffusion controlled regime for 15 nm spherical nanoparticles with homogeneously distributed reactive sites. Mnp@YM reversibly adsorbs MB with maximum adsorption of 50 mg g−1 . As a consequence of these capacities, Mnp@YM resulted effective in preventing MB oxidation by peroxodisulfate.
Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas
description Single-crystal 15 nm size magnetite nanoparticles were synthesized and coated with Yerba Mate (Ilex paraguariensis) extract to evaluate their use as versatile antioxidant magnetic nanoadsorbents. The obtained particles, Mnp@YM, were found to be composed of a crystalline magnetite core surrounded by a shell composed of Fe3O4, FeO, and Fe2O3 oxides. YM extract resulted an effective protective coating for Mnp incorporating surface carboxylates, phenols, and organic N groups which improve the particles stability in aqueous suspensions. Mnp@YM antioxidant capacity (1.8 µM Trolox equivalent per 0.1 mg YM coating contained in 1 mgL−1 particle suspension) is of the order reported for polyphenols. SO4 ⋅− scavenging rate constant (1.5×104 g−1 L s−1 ) is within the diffusion controlled regime for 15 nm spherical nanoparticles with homogeneously distributed reactive sites. Mnp@YM reversibly adsorbs MB with maximum adsorption of 50 mg g−1 . As a consequence of these capacities, Mnp@YM resulted effective in preventing MB oxidation by peroxodisulfate.
publishDate 2017
dc.date.none.fl_str_mv 2017-12-06
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Articulo
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://sedici.unlp.edu.ar/handle/10915/133110
url http://sedici.unlp.edu.ar/handle/10915/133110
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/issn/1574-1443
info:eu-repo/semantics/altIdentifier/issn/1574-1451
info:eu-repo/semantics/altIdentifier/doi/10.1007/s10904-017-0757-8
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by/4.0/
Creative Commons Attribution 4.0 International (CC BY 4.0)
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by/4.0/
Creative Commons Attribution 4.0 International (CC BY 4.0)
dc.format.none.fl_str_mv application/pdf
519-527
dc.source.none.fl_str_mv reponame:SEDICI (UNLP)
instname:Universidad Nacional de La Plata
instacron:UNLP
reponame_str SEDICI (UNLP)
collection SEDICI (UNLP)
instname_str Universidad Nacional de La Plata
instacron_str UNLP
institution UNLP
repository.name.fl_str_mv SEDICI (UNLP) - Universidad Nacional de La Plata
repository.mail.fl_str_mv alira@sedici.unlp.edu.ar
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score 13.012142

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