Titania-triethanolamine-kaolinite nanocomposites as adsorbents and photocatalysts of herbicides

Ferreira, Ana Vera de Toledo Piza Figueiredo; Barbosa, Lorrana Vietro; Souza, Suelen Delfino de; Ciuffi, Katia J.; Vicente, Miguel Ángel; Trujillano, Raquel; Korili, Sophia A.; Gil Bravo, Antonio; Faria, Emerson H. de

Titania-triethanolamine-kaolinite nanocomposites as adsorbents and photocatalysts of herbicides

dc.contributor.author	Ferreira, Ana Vera de Toledo Piza Figueiredo
dc.contributor.author	Barbosa, Lorrana Vietro
dc.contributor.author	Souza, Suelen Delfino de
dc.contributor.author	Ciuffi, Katia J.
dc.contributor.author	Vicente, Miguel Ángel
dc.contributor.author	Trujillano, Raquel
dc.contributor.author	Korili, Sophia A.
dc.contributor.author	Gil Bravo, Antonio
dc.contributor.author	Faria, Emerson H. de
dc.contributor.department	Zientziak	eu
dc.contributor.department	Institute for Advanced Materials and Mathematics - INAMAT2	en
dc.contributor.department	Ciencias	es_ES
dc.date.accessioned	2022-01-26T08:35:08Z
dc.date.available	2023-08-01T23:00:15Z
dc.date.issued	2021
dc.description.abstract	Kaolinite-titania adsorbents/photocatalysts were prepared by functionalizing a kaolinite with titanium(IV) triethanolaminate isopropoxide by the sol–gel route. These materials were characterized by various techniques and applied in adsorption studies (kinetic and equilibrium) of the herbicides diuron, hexazinone, and tebuthiuron. Photodegradation studies were also conducted with the materials submitted to heat-treatment at 400, 700, or 1000 °C. The basal spacing increased from 0.71 to 1.08 nm when pure kaolinite was functionalized with titanium triethanolaminate units. The materials displayed FTIR bands of –CH, –NH2, and Ti–OH groups, thereby confirming that titanium alkoxide was present in the kaolinite interlayer space. The pseudo second-order model was the best for describing the kinetic adsorption process. In the equilibrium study, the Langmuir model best described the adsorption mechanism. The photodegradation studies showed that the kaolinite-titania nanocomposites heat-treated at 400 and 700 degraded diuron, hexazinone, and tebuthiuron efficiently due to the presence of metakaolin and formation of the anatase phase. © 2021 Elsevier B.V.	en
dc.description.sponsorship	We acknowledge the support of the Brazilian research funding agency Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) (2013/19523-3, and 2017/15482-1). The UV–Vis and FTIR infrastructures were financed by FAPESP (1998/11022-3 and 2012/11673-3). This study was partially funded by Coordenação de Aperfeiçoamento de Pessoal de Nível Superior – Brasil (CAPES) – Finance Code 001. The Brazilian authors thank Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) (311767/2015-0, and 303135/2018-2). The Spanish authors acknowledge the support from MINECO and ERDF (MAT2016-78863-C2-R). AG also thanks Santander Bank for funding via the Research Intensification Program.	en
dc.embargo.lift	2023-08-01
dc.embargo.terms	2023-08-01
dc.format.extent	46 p.
dc.format.mimetype	application/pdf	en
dc.identifier.citation	A. Vera de Toledo Piza Figueiredo Ferreira, L. Vietro Barbosa, S. Delfino de Souza, K. Jorge Ciuffi, M. Angel Vicente, R. Trujillano, S.A. Korili, A. Gil, E. Henrique de Faria, Titania-triethanolamine kaolinite nanocomposites as adsorbents and photocatalysts of herbicides, Journal of Photochemistry & Photobiology, A: Chemistry (2021), doi: https://doi.org/10.1016/j.jphotochem.2021.113483	en
dc.identifier.doi	10.1016/j.jphotochem.2021.113483
dc.identifier.issn	1010-6030
dc.identifier.uri	https://academica-e.unavarra.es/handle/2454/41950
dc.language.iso	eng	en
dc.publisher	Elsevier
dc.relation.ispartof	Journal of Photochemistry and Photobiology A: Chemistry, 419	en
dc.relation.projectID	info:eu-repo/grantAgreement/MINECO/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/MAT2016-78863-C2-R/
dc.relation.publisherversion	https://doi.org/10.1016/j.jphotochem.2021.113483
dc.rights	© 2021 Elsevier B.V. This manuscript version is made available under the CC-BY-NC-ND 4.0	en
dc.rights.accessRights	info:eu-repo/semantics/openAccess
dc.rights.uri	https://creativecommons.org/licenses/by-nc-nd/4.0/
dc.subject	Advanced oxidative process	en
dc.subject	Clay minerals	en
dc.subject	Functionalization	en
dc.subject	Herbicides	en
dc.subject	Removal	en
dc.title	Titania-triethanolamine-kaolinite nanocomposites as adsorbents and photocatalysts of herbicides	en
dc.type	info:eu-repo/semantics/article
dc.type.version	info:eu-repo/semantics/acceptedVersion
dspace.entity.type	Publication
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