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dc.creatorMora, Lucas D.es_ES
dc.creatorTrujillano, Raqueles_ES
dc.creatorRives, Vicentees_ES
dc.creatorPérez Bernal, María Elenaes_ES
dc.creatorKorili, Sophia A.es_ES
dc.creatorGil Bravo, Antonioes_ES
dc.creatorFaria, Emerson H. dees_ES
dc.date.accessioned2020-05-20T08:33:25Z
dc.date.available2020-05-20T08:33:25Z
dc.date.issued2019
dc.identifier.issn1996-1944
dc.identifier.urihttps://hdl.handle.net/2454/36939
dc.description.abstractThe presence of volatile organic compounds in groundwater is a major concern when it is used as a drinking water source because many of these compounds can adversely affect human health. This work reports on the preparation and characterization of white and red Brazilian Sao Simao's kaolinite-TiO2 nanocomposites and their use as catalysts in the photochemical degradation of toluene, a significant volatile organic compound. The nanocomposites were prepared by a sol-gel procedure, using titanium bis(triethanolaminate)diisopropoxide as a precursor. Thermal treatments of the nanocomposites led to different polymorphic titania phases, while the clay changed from kaolinite to metakaolinite. This structural evolution strongly affected the photocatalytic degradation behavior-all the solids efficiently degraded toluene and the solid calcined at 400 degrees C, formed by kaolinite and anatase, showed the best behavior (90% degradation). On extending the photochemical treatment up to 48 h, high mineralization levels were reached. The advantage of photodegradation using the nanocomposites was confirmed by comparing the results from isolated components (titanium dioxide and kaolinite) to observe that the nanocomposites displayed fundamental importance to the photodegradation pathways of toluene.en
dc.description.sponsorshipBrazilian authors thank the funding of this research by Fundaçao de Amparo a Pesquisa do Estado de Sao Paulo (FAPESP) through projects 2013/19523-3, 2017/15482-1, 1998/11022-3 (thermal analysis and UV-Visible spectroscopy equipment), 2012/11673-3 (FTIR equipment), Coordenacao de Aperfeicoamento de Pessoal de Nivel Superior-Brasil (CAPES), Finance Code 001 and Conselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPq) through projects 311767/2015-0 and 303135/2018-2. Spanish authors thank the joint funding from the Spanish Ministry of Economy, Industry and Competitiveness (AEI/MINECO), and the European Regional Development Fund (ERDF) through project MAT2016-78863-C2-R.en
dc.format.extent18 p.
dc.format.mimetypeapplication/pdfen
dc.language.isoengen
dc.publisherMDPIen
dc.relation.ispartofMaterials, 2019, 12 (23), 3943en
dc.rights© 2019 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license.en
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
dc.subjectPhotodegradationen
dc.subjectKaoliniteen
dc.subjectVolatile organic compounden
dc.subjectTitanium dioxideen
dc.subjectNanocompositesen
dc.titleWhite and red Brazilian Sao Simao's kaolinite-TiO2 nanocomposites as catalysts for toluene photodegradation from aqueous solutionsen
dc.typeinfo:eu-repo/semantics/articleen
dc.typeArtículo / Artikuluaes
dc.contributor.departmentUniversidad Pública de Navarra. Departamento de Cienciases_ES
dc.contributor.departmentNafarroako Unibertsitate Publikoa. Zientziak Sailaeu
dc.contributor.departmentUniversidad Pública de Navarra / Nafarroako Unibertsitate Publikoa. InaMat - Institute for Advanced Materialses_ES
dc.rights.accessRightsinfo:eu-repo/semantics/openAccessen
dc.rights.accessRightsAcceso abierto / Sarbide irekiaes
dc.identifier.doi10.3390/ma12233943
dc.relation.projectIDinfo:eu-repo/grantAgreement/ES/1PE/MAT2016-78863en
dc.relation.publisherversionhttps://doi.org/10.3390/ma12233943
dc.type.versioninfo:eu-repo/semantics/publishedVersionen
dc.type.versionVersión publicada / Argitaratu den bertsioaes


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© 2019 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access
article distributed under the terms and conditions of the Creative Commons Attribution
(CC BY) license.
Except where otherwise noted, this item's license is described as © 2019 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license.