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Efficient Methylene Blue Degradation by Activation of Peroxymonosulfate over Co(II) and/or Fe(II) Impregnated Montmorillonites

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dc.contributor.authorBarrios Bermúdez, Niurka
dc.contributor.authorCerpa Naranjo, Arisbel
dc.contributor.authorRojas Cervantes, María Luisa
dc.contributor.orcidhttps://orcid.org/0000-0003-4932-544X
dc.contributor.orcidhttps://orcid.org/0000-0002-4767-880X
dc.date.accessioned2024-12-02T10:47:05Z
dc.date.available2024-12-02T10:47:05Z
dc.date.issued2024-07-27
dc.descriptionThe registered version of this article, first published in “Catalysts, 14(8), 479", is available online at the publisher's: MDPI, https://doi.org/10.3390/catal14080479
dc.descriptionLa versión registrada de este artículo, publicado por primera vez en “Catalysts, 14(8), 479", está disponible en línea en el sitio web del editor: MDPI, https://doi.org/10.3390/catal14080479
dc.description.abstractTwo commercial montmorillonites, namely montmorillonite K10 (MK10) and montmorillonite pillared with aluminum (MPil) were impregnated with cobalt(II) and/or iron(II) acetates by incipient wetness impregnation and used to activate peroxymonosulfate (PMS) for the degradation of methylene blue (MB) dye in water. Various characterization techniques, including ICP-MS, XRD, SEM and TEM with EDX, and N2 physisorption, confirmed the successful impregnation process. The removal of the dye resulted from a combined effect of adsorption and PMS activation through Co3+/Co2+ redox couples. The MK10 series exhibited a higher degree of dye adsorption compared to the MPil series, leading to enhanced dye decomposition and superior catalytic performance in the former. The influence of catalyst mass, dye concentration, and initial pH was investigated. SO4•− radicals were found as the dominant reactive oxygen species. Co2+-impregnated montmorillonites showed better performance than their Fe2+-impregnated counterparts, with MK10-Co achieving complete MB removal in just 20 min. High degradation values of MB were achieved using lower PMS/MB ratios and amount of catalyst than others reported in the literature, showing the efficiency of cobalt-impregnated montmorillonites. Moreover, the catalysts maintained excellent catalytic activity after three reaction cycles.en
dc.description.versionversión publicada
dc.identifier.citationN. Barrios-Bermúdez, A. Cerpa-Naranjo, M. L. Rojas-Cervantes. “Efficient Methylene Blue Degradation by Activation of Peroxymonosulfate over Co(II) and/or Fe(II) Impregnated Montmorillonites”. Catalysts (2024) 14 2024 (1-22). DOI: 10.21950/GOFMXV
dc.identifier.doihttps://doi.org/10.3390/catal14080479
dc.identifier.issn2073-4344
dc.identifier.urihttps://hdl.handle.net/20.500.14468/24623
dc.journal.issue8
dc.journal.titleCatalysts
dc.journal.volume14
dc.language.isoen
dc.publisherMDPI
dc.relation.centerFacultades y escuelas::Facultad de Ciencias
dc.relation.departmentQuímica Inorgánica y Química Técnica
dc.relation.isreferencedbyhttps://doi.org/10.21950/GOFMXV
dc.rightsinfo:eu-repo/semantics/openAccess
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/deed.es
dc.subject23 Química::2303 Química inorgánica
dc.subject.keywordsmontmorillonitesen
dc.subject.keywordsmethylene blueen
dc.subject.keywordsperoxymonosulfateen
dc.subject.keywordsheterogeneous catalystsen
dc.titleEfficient Methylene Blue Degradation by Activation of Peroxymonosulfate over Co(II) and/or Fe(II) Impregnated Montmorillonitesen
dc.typeartículoes
dc.typejournal articleen
dspace.entity.typePublication
person.familyNameRojas Cervantes
person.givenNameMaría Luisa
person.identifier.orcid0000-0001-5528-9276
relation.isAuthorOfPublicatione3f5d6d3-8813-445b-9a74-2d427896c0c7
relation.isAuthorOfPublication.latestForDiscoverye3f5d6d3-8813-445b-9a74-2d427896c0c7
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