Decoupling the adsorption mechanisms of arsenate at molecular level on modified cube-shaped sponge loaded superparamagnetic iron oxide nanoparticles

In this study, a commercial cube-shaped open-celled cellulose sponge adsorbent was modified by in-situ co-precipitation of superparamagnetic iron oxide nanoparticles (SPION) and used to remove As(V) from aqueous solutions. Fe K-edge X-ray absorption spectroscopy (XAS) and TEM identified maghemite as...

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Autores: Lou, Xiang-Yang|||0000-0003-0241-6707, Boada, Roberto|||0000-0003-4857-8402, Verdugo, Verónica|||0000-0003-3090-285X, Simonelli, Laura|||0000-0001-5331-0633, Pérez González, Gustavo|||0000-0001-9112-9042, Valiente, Manuel|||0000-0003-0766-9922
Tipo de recurso: artículo
Fecha de publicación:2022
País:España
Institución:Universitat Autònoma de Barcelona
Repositorio:Dipòsit Digital de Documents de la UAB
Idioma:inglés
OAI Identifier:oai:ddd.uab.cat:268305
Acceso en línea:https://ddd.uab.cat/record/268305
https://dx.doi.org/urn:doi:10.1016/j.jes.2021.09.001
Access Level:acceso abierto
Palabra clave:Adsorption
Cube composite adsorbent
Arsenate removal
Regeneration
X-ray absorption spectroscopy
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spelling Decoupling the adsorption mechanisms of arsenate at molecular level on modified cube-shaped sponge loaded superparamagnetic iron oxide nanoparticlesLou, Xiang-Yang|||0000-0003-0241-6707Boada, Roberto|||0000-0003-4857-8402Verdugo, Verónica|||0000-0003-3090-285XSimonelli, Laura|||0000-0001-5331-0633Pérez González, Gustavo|||0000-0001-9112-9042Valiente, Manuel|||0000-0003-0766-9922AdsorptionCube composite adsorbentArsenate removalRegenerationX-ray absorption spectroscopyIn this study, a commercial cube-shaped open-celled cellulose sponge adsorbent was modified by in-situ co-precipitation of superparamagnetic iron oxide nanoparticles (SPION) and used to remove As(V) from aqueous solutions. Fe K-edge X-ray absorption spectroscopy (XAS) and TEM identified maghemite as the main iron phase of the SPION nanoparticles with an average size 13 nm. Batch adsorption experiments at 800 mg/L showed a 63% increase of adsorption capacity when loading 2.6 wt.% mass fraction of SPION in the cube-sponge. Experimental determination of the adsorption thermodynamic parameters indicated that the As(V) adsorption on the composite material is a spontaneous and exothermic process. As K-edge XAS results confirmed that the adsorption enhancement on the composite can be attributed to the nanoparticles loaded. In addition, adsorbed As(V) did not get reduced to more toxic As(III) and formed a binuclear corner-sharing complex with SPION. The advantageous cube-shape of the sponge-loaded SPION composite together with its high affinity and good adsorption capacity for As(V), good regeneration capability and the enhanced-diffusion attributed to its open-celled structure make this adsorbent a good candidate for industrial applications. 22022-01-0120222022-01-01Articlehttp://purl.org/coar/resource_type/c_6501VoRhttp://purl.org/coar/version/c_970fb48d4fbd8a85info:eu-repo/semantics/articleapplication/pdfhttps://ddd.uab.cat/record/268305https://dx.doi.org/urn:doi:10.1016/j.jes.2021.09.001reponame:Dipòsit Digital de Documents de la UABinstname:Universitat Autònoma de BarcelonaInglésengMinisterio de Economía y Competitividad https://doi.org/10.13039/501100003329 CTM2015-65414-C2-1-REuropean Commission https://doi.org/10.13039/501100000780 665919open accesshttp://purl.org/coar/access_right/c_abf2Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, i la comunicació pública de l'obra, sempre que no sigui amb finalitats comercials, i sempre que es reconegui l'autoria de l'obra original. No es permet la creació d'obres derivades.https://creativecommons.org/licenses/by-nc-nd/4.0/info:eu-repo/semantics/openAccessoai:ddd.uab.cat:2683052026-06-06T12:50:31Z
dc.title.none.fl_str_mv Decoupling the adsorption mechanisms of arsenate at molecular level on modified cube-shaped sponge loaded superparamagnetic iron oxide nanoparticles
title Decoupling the adsorption mechanisms of arsenate at molecular level on modified cube-shaped sponge loaded superparamagnetic iron oxide nanoparticles
spellingShingle Decoupling the adsorption mechanisms of arsenate at molecular level on modified cube-shaped sponge loaded superparamagnetic iron oxide nanoparticles
Lou, Xiang-Yang|||0000-0003-0241-6707
Adsorption
Cube composite adsorbent
Arsenate removal
Regeneration
X-ray absorption spectroscopy
title_short Decoupling the adsorption mechanisms of arsenate at molecular level on modified cube-shaped sponge loaded superparamagnetic iron oxide nanoparticles
title_full Decoupling the adsorption mechanisms of arsenate at molecular level on modified cube-shaped sponge loaded superparamagnetic iron oxide nanoparticles
title_fullStr Decoupling the adsorption mechanisms of arsenate at molecular level on modified cube-shaped sponge loaded superparamagnetic iron oxide nanoparticles
title_full_unstemmed Decoupling the adsorption mechanisms of arsenate at molecular level on modified cube-shaped sponge loaded superparamagnetic iron oxide nanoparticles
title_sort Decoupling the adsorption mechanisms of arsenate at molecular level on modified cube-shaped sponge loaded superparamagnetic iron oxide nanoparticles
dc.creator.none.fl_str_mv Lou, Xiang-Yang|||0000-0003-0241-6707
Boada, Roberto|||0000-0003-4857-8402
Verdugo, Verónica|||0000-0003-3090-285X
Simonelli, Laura|||0000-0001-5331-0633
Pérez González, Gustavo|||0000-0001-9112-9042
Valiente, Manuel|||0000-0003-0766-9922
author Lou, Xiang-Yang|||0000-0003-0241-6707
author_facet Lou, Xiang-Yang|||0000-0003-0241-6707
Boada, Roberto|||0000-0003-4857-8402
Verdugo, Verónica|||0000-0003-3090-285X
Simonelli, Laura|||0000-0001-5331-0633
Pérez González, Gustavo|||0000-0001-9112-9042
Valiente, Manuel|||0000-0003-0766-9922
author_role author
author2 Boada, Roberto|||0000-0003-4857-8402
Verdugo, Verónica|||0000-0003-3090-285X
Simonelli, Laura|||0000-0001-5331-0633
Pérez González, Gustavo|||0000-0001-9112-9042
Valiente, Manuel|||0000-0003-0766-9922
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv Adsorption
Cube composite adsorbent
Arsenate removal
Regeneration
X-ray absorption spectroscopy
topic Adsorption
Cube composite adsorbent
Arsenate removal
Regeneration
X-ray absorption spectroscopy
description In this study, a commercial cube-shaped open-celled cellulose sponge adsorbent was modified by in-situ co-precipitation of superparamagnetic iron oxide nanoparticles (SPION) and used to remove As(V) from aqueous solutions. Fe K-edge X-ray absorption spectroscopy (XAS) and TEM identified maghemite as the main iron phase of the SPION nanoparticles with an average size 13 nm. Batch adsorption experiments at 800 mg/L showed a 63% increase of adsorption capacity when loading 2.6 wt.% mass fraction of SPION in the cube-sponge. Experimental determination of the adsorption thermodynamic parameters indicated that the As(V) adsorption on the composite material is a spontaneous and exothermic process. As K-edge XAS results confirmed that the adsorption enhancement on the composite can be attributed to the nanoparticles loaded. In addition, adsorbed As(V) did not get reduced to more toxic As(III) and formed a binuclear corner-sharing complex with SPION. The advantageous cube-shape of the sponge-loaded SPION composite together with its high affinity and good adsorption capacity for As(V), good regeneration capability and the enhanced-diffusion attributed to its open-celled structure make this adsorbent a good candidate for industrial applications.
publishDate 2022
dc.date.none.fl_str_mv 2
2022-01-01
2022
2022-01-01
dc.type.none.fl_str_mv Article
http://purl.org/coar/resource_type/c_6501
VoR
http://purl.org/coar/version/c_970fb48d4fbd8a85
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://ddd.uab.cat/record/268305
https://dx.doi.org/urn:doi:10.1016/j.jes.2021.09.001
url https://ddd.uab.cat/record/268305
https://dx.doi.org/urn:doi:10.1016/j.jes.2021.09.001
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.relation.none.fl_str_mv Ministerio de Economía y Competitividad https://doi.org/10.13039/501100003329 CTM2015-65414-C2-1-R
European Commission https://doi.org/10.13039/501100000780 665919
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
https://creativecommons.org/licenses/by-nc-nd/4.0/
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
https://creativecommons.org/licenses/by-nc-nd/4.0/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:Dipòsit Digital de Documents de la UAB
instname:Universitat Autònoma de Barcelona
instname_str Universitat Autònoma de Barcelona
reponame_str Dipòsit Digital de Documents de la UAB
collection Dipòsit Digital de Documents de la UAB
repository.name.fl_str_mv
repository.mail.fl_str_mv
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