Please use this identifier to cite or link to this item: http://rdu.iquimica.unam.mx/handle/20.500.12214/1229
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dc.rights.licensehttp://creativecommons.org/licenses/by-nc-nd/4.0es_MX
dc.creatorJoaquín Barroso_Flores-
dc.date.accessioned2020-03-02T16:11:25Z-
dc.date.available2020-03-02T16:11:25Z-
dc.date.issued2020-
dc.identifier.urihttp://rdu.iquimica.unam.mx/handle/20.500.12214/1229-
dc.description.abstractThe study of the interaction between graphene oxide (GO) and arsenic is of great relevance not only in the designof adsorbent materials to remove this contaminant but also in the understanding of its combined nanotoxicity. Inthis work, we show that As(III) adsorption, primarily H3AsO3, by graphene oxide is affected by its degree ofoxidation. Three types of GO with C/O ratios between 1.35 and 1.98 were produced, resulting in importantvariations in the concentration of CeOH and CeOeC functional groups. The less oxidized material reached amaximum As(III) adsorption capacity of 123 mg/g, whereas the GO with the highest degree of oxidation reacheda value of 288 mg/g at pH 7, the highest reported in the literature. We also show that sulfates and carbonatespresent in water strongly inhibit As(III) adsorption. The interaction between graphene oxide and As(III) was alsostudied by Density Functional Theory (DFT) computer models showing that graphene oxide interacts with As(III)primarily through hydrogen bonds, having interaction energies with the hydroxyl and epoxide groups of 1508.6and 1583.6 kJ/mol, respectively. Finally, cytotoxicity tests showed that the graphene oxide maintained cellularviability of 57% with 50μg/ml, regardless of its degree of oxidation.es_MX
dc.language.isoenges_MX
dc.relation.uriwww.elsevier.com/locate/jhazmates_MX
dc.rightsinfo:eu-repo/semantics/closedAccesses_MX
dc.sourceJournal of Hazardous Materials (ISSN 0304-3894) 384, 121440es_MX
dc.titleEffect of the degree of oxidation of graphene oxide on As(III) adsorptiones_MX
dc.typeinfo:eu-repo/semantics/articlees_MX
dc.creator.idinfo:eu-repo/dai/mx/orcid/0000-0003-0554-7569es_MX
dc.subject.ctiinfo:eu-repo/classification/cti/2es_MX
dc.subject.keywordsArsenices_MX
dc.subject.keywordsGOes_MX
dc.subject.keywordsAdsorption capacityes_MX
dc.subject.keywordsOxygenated functional groupses_MX
dc.subject.keywordsOxidation degreees_MX
dc.type.urihttps://doi.org/10.1016/j.jhazmat.2019.121440es_MX
dc.creator.twoVeronica Garcia_Montalvo-
dc.creator.threeMAYRA ANGELICA ALVAREZ LEMUS-
dc.creator.fourEddie Lopez-Honorato,-
dc.creator.idtwoinfo:eu-repo/dai/mx/orcid/0000-0002-6220-9702es_MX
dc.creator.idthreeinfo:eu-repo/dai/mx/orcid/0000-0002-4883-7067es_MX
dc.creator.idfourinfo:eu-repo/dai/mx/orcid/0000-0001-7948-798Xes_MX
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