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Authordc.contributor.authorRodríguez, Bárbara 
Authordc.contributor.authorArmendáriz Ontiveros, María 
Authordc.contributor.authorHernández Quezada, Rodrigo Alejandro 
Authordc.contributor.authorHuitron Segovia, Esther 
Authordc.contributor.authorEstay, Humberto 
Authordc.contributor.authorGarcía García, Alejandra 
Authordc.contributor.authorGarcía, Andreina 
Cita de ítemdc.identifier.citationPolymers 2020, 12, 2860es_ES
Abstractdc.description.abstractThe influence of the lateral size and the content of graphene oxide (GO) flakes in specific oxygenate functional groups on the anti-biofouling properties and performance of thin-film composite membrane (TFC) was studied. Three different multidimensional GO samples were prepared with small (500-1200 nm), medium (1200-2300 nm), and large (2300-3600 nm) size distribution, and with different degrees of oxidation (GO3 > GO2 > GO1), varying the concentration of the hydrogen peroxide amount during GO synthesis. GO1 sheets' length have a heterogeneous size distribution containing all size groups, whilst GO2 is contained in a medium-size group, and GO3 is totally contained within a small-size group. Moreover, GO oxygenate groups were controlled. GO2 and GO3 have hydroxyl and epoxy groups at the basal plane of their sheets. Meanwhile, GO1 presented only hydroxyl groups. GO sheets were incorporated into the polyamide (PA) layer of the TFC membrane during the interfacial polymerization reaction. The incorporation of GO1 produced a modified membrane with excellent bactericidal properties and anti-adhesion capacity, as well as superior desalination performance with high water flow (133% as compared with the unmodified membrane). For GO2 and GO3, despite the significant anti-biofouling effect, a detrimental impact on desalination performance was observed. The high content of large sheets in GO2 and small sheet stacking in GO3 produced an unfavorable impact on the water flow. Therefore, the synergistic effect due to the presence of large- and small-sized GO sheets and high content of OH-functional groups (GO1) made it possible to balance the performance of the membrane.es_ES
Patrocinadordc.description.sponsorshipAssociative Research Program of the National Commission of Science and Technology (CONICYT, PIA Project) ACM170003 ANID Comision Nacional de Investigacion Cientifica y Tecnologica (CONICYT) CONICYT FONDECYT 3180093 AMTC CONICYT-PIA Project AFB180004 Instituto Tecnologico de Sonora through a PROFAPI fund 2020-0021es_ES
Type of licensedc.rightsAttribution-NonCommercial-NoDerivs 3.0 Chile*
Link to Licensedc.rights.uri*
Keywordsdc.subjectTFC membraneses_ES
Keywordsdc.subjectGraphene oxide multidimensional sheetses_ES
Keywordsdc.subjectLateral dimensionses_ES
Keywordsdc.subjectOxidation degreees_ES
Títulodc.titleInfluence of Multidimensional Graphene Oxide (GO) Sheets on Anti-Biofouling and Desalination Performance of Thin-Film Composite Membranes: Effects of GO Lateral Sizes and Oxidation Degreees_ES
Document typedc.typeArtículo de revistaes_ES
dcterms.accessRightsdcterms.accessRightsAcceso Abierto
Indexationuchile.indexArtículo de publicación ISI
Indexationuchile.indexArtículo de publicación SCOPUS

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Attribution-NonCommercial-NoDerivs 3.0 Chile
Except where otherwise noted, this item's license is described as Attribution-NonCommercial-NoDerivs 3.0 Chile