Enhanced arsenite removal by superparamagnetic iron oxide nanoparticles in-situ synthesized on a commercial cube-shape sponge

Hypothesis: The easy aggregation of superparamagnetic iron oxide nanoparticles (SPION) greatly reduces their adsorption performance for removing arsenic (As) from polluted water. We propose to exploit the porosity and good diffusion properties of a cube-shaped cellulose sponge for loading SPION to r...

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Autores: Lou, Xiang-Yang|||0000-0003-0241-6707, Boada, Roberto|||0000-0003-4857-8402, Simonelli, Laura|||0000-0001-5331-0633, 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:256262
Acceso en línea:https://ddd.uab.cat/record/256262
https://dx.doi.org/urn:doi:10.1016/j.jcis.2022.01.119
Access Level:acceso abierto
Palabra clave:Arsenite removal
Adsorption-oxidation
Superparamagnetic iron oxide nanoparticles (SPION)
Commercial cube sponge
X-ray absorption spectroscopy
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spelling Enhanced arsenite removal by superparamagnetic iron oxide nanoparticles in-situ synthesized on a commercial cube-shape spongeadsorption-oxidation mechanismLou, Xiang-Yang|||0000-0003-0241-6707Boada, Roberto|||0000-0003-4857-8402Simonelli, Laura|||0000-0001-5331-0633Valiente, Manuel|||0000-0003-0766-9922Arsenite removalAdsorption-oxidationSuperparamagnetic iron oxide nanoparticles (SPION)Commercial cube spongeX-ray absorption spectroscopyHypothesis: The easy aggregation of superparamagnetic iron oxide nanoparticles (SPION) greatly reduces their adsorption performance for removing arsenic (As) from polluted water. We propose to exploit the porosity and good diffusion properties of a cube-shaped cellulose sponge for loading SPION to reduce the aggregation and to develop a composite adsorbent in the cm-scale that could be used for industrial applications. Experiments: SPION were in-situ synthesized by co-precipitation using a commercial cube-shaped sponge (MetalZorb®) as support. The morphology, iron-oxide phase, adsorption performance and thermodynamic parameters of the composite adsorbent were determined to better understand the adsorption process. X-ray absorption spectroscopy (XAS) was used to investigate the chemical state of the adsorbed As(III). Findings: The adsorption of the supported SPION outperforms the unsupported SPION (ca. 14 times higher adsorption capacity). The modelling of the adsorption isotherms and the kinetic curves indicated that chemisorption is controlling the adsorption process. The thermodynamic analysis shows that the adsorption retains the spontaneous and endothermic character of the unsupported SPION. The XAS results revealed an adsorption-oxidation mechanism in which the adsorbed As(III) was partially oxidized to less toxic As(V) by the hydroxyl free radical (•OH) generated from Fe(III) species and by the hydroxyl groups. 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/256262https://dx.doi.org/urn:doi:10.1016/j.jcis.2022.01.119reponame:Dipòsit Digital de Documents de la UABinstname:Universitat Autònoma de BarcelonaInglésengEuropean Commission https://doi.org/10.13039/501100000780 665919Ministerio de Economía y Competitividad https://doi.org/10.13039/501100003329 CTM2015-65414-C2-1-Ropen 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:2562622026-06-06T12:50:31Z
dc.title.none.fl_str_mv Enhanced arsenite removal by superparamagnetic iron oxide nanoparticles in-situ synthesized on a commercial cube-shape sponge
adsorption-oxidation mechanism
title Enhanced arsenite removal by superparamagnetic iron oxide nanoparticles in-situ synthesized on a commercial cube-shape sponge
spellingShingle Enhanced arsenite removal by superparamagnetic iron oxide nanoparticles in-situ synthesized on a commercial cube-shape sponge
Lou, Xiang-Yang|||0000-0003-0241-6707
Arsenite removal
Adsorption-oxidation
Superparamagnetic iron oxide nanoparticles (SPION)
Commercial cube sponge
X-ray absorption spectroscopy
title_short Enhanced arsenite removal by superparamagnetic iron oxide nanoparticles in-situ synthesized on a commercial cube-shape sponge
title_full Enhanced arsenite removal by superparamagnetic iron oxide nanoparticles in-situ synthesized on a commercial cube-shape sponge
title_fullStr Enhanced arsenite removal by superparamagnetic iron oxide nanoparticles in-situ synthesized on a commercial cube-shape sponge
title_full_unstemmed Enhanced arsenite removal by superparamagnetic iron oxide nanoparticles in-situ synthesized on a commercial cube-shape sponge
title_sort Enhanced arsenite removal by superparamagnetic iron oxide nanoparticles in-situ synthesized on a commercial cube-shape sponge
dc.creator.none.fl_str_mv Lou, Xiang-Yang|||0000-0003-0241-6707
Boada, Roberto|||0000-0003-4857-8402
Simonelli, Laura|||0000-0001-5331-0633
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
Simonelli, Laura|||0000-0001-5331-0633
Valiente, Manuel|||0000-0003-0766-9922
author_role author
author2 Boada, Roberto|||0000-0003-4857-8402
Simonelli, Laura|||0000-0001-5331-0633
Valiente, Manuel|||0000-0003-0766-9922
author2_role author
author
author
dc.subject.none.fl_str_mv Arsenite removal
Adsorption-oxidation
Superparamagnetic iron oxide nanoparticles (SPION)
Commercial cube sponge
X-ray absorption spectroscopy
topic Arsenite removal
Adsorption-oxidation
Superparamagnetic iron oxide nanoparticles (SPION)
Commercial cube sponge
X-ray absorption spectroscopy
description Hypothesis: The easy aggregation of superparamagnetic iron oxide nanoparticles (SPION) greatly reduces their adsorption performance for removing arsenic (As) from polluted water. We propose to exploit the porosity and good diffusion properties of a cube-shaped cellulose sponge for loading SPION to reduce the aggregation and to develop a composite adsorbent in the cm-scale that could be used for industrial applications. Experiments: SPION were in-situ synthesized by co-precipitation using a commercial cube-shaped sponge (MetalZorb®) as support. The morphology, iron-oxide phase, adsorption performance and thermodynamic parameters of the composite adsorbent were determined to better understand the adsorption process. X-ray absorption spectroscopy (XAS) was used to investigate the chemical state of the adsorbed As(III). Findings: The adsorption of the supported SPION outperforms the unsupported SPION (ca. 14 times higher adsorption capacity). The modelling of the adsorption isotherms and the kinetic curves indicated that chemisorption is controlling the adsorption process. The thermodynamic analysis shows that the adsorption retains the spontaneous and endothermic character of the unsupported SPION. The XAS results revealed an adsorption-oxidation mechanism in which the adsorbed As(III) was partially oxidized to less toxic As(V) by the hydroxyl free radical (•OH) generated from Fe(III) species and by the hydroxyl groups.
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/256262
https://dx.doi.org/urn:doi:10.1016/j.jcis.2022.01.119
url https://ddd.uab.cat/record/256262
https://dx.doi.org/urn:doi:10.1016/j.jcis.2022.01.119
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.relation.none.fl_str_mv European Commission https://doi.org/10.13039/501100000780 665919
Ministerio de Economía y Competitividad https://doi.org/10.13039/501100003329 CTM2015-65414-C2-1-R
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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