Facile fabrication of hybrid titanium(IV) isopropoxide/pozzolan nanosheets (TnS-Pz) of high photocatalytic activity: characterization and application for Cr(VI) reduction in an aqueous solution

This paper presents the synthesis of a hybrid material through the use of natural pozzolan and titanium(IV) isopropoxide using the sol-gel method and its application in the photocatalytic hexavalent chromium reduction. The characterization data indicated a mesoporous material possessing a surface ar...

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Authors: Novack, Aline M., Dos Reis, Glaydson Simões, Hackbarth, Fabíola V., Marinho, Belisa A., Ðolić, Maja B., Valle, José A. B., Hoffmann Sampaio, Carlos|||0000-0001-5840-1614, Lima, Eder Claudio, Dotto, Guillherme Luiz, Ulson de Souza, Antônio Augusto, Vilar, Vítor J. P., Ulson de Souza, Selene M. A. Guelli
Format: article
Publication Date:2020
Country:España
Institution:Universitat Politècnica de Catalunya (UPC)
Repository:UPCommons. Portal del coneixement obert de la UPC
Language:English
OAI Identifier:oai:upcommons.upc.edu:2117/330595
Online Access:https://hdl.handle.net/2117/330595
https://dx.doi.org/10.1007/s11356-020-09178-1
Access Level:Open access
Keyword:Photocatalysis
Titanium(IV) isopropoxide/pozzolan synthesis
Hybrid material
Heterogeneous photocatalysis
Metal photoreduction
Fotocatàlisi
Àrees temàtiques de la UPC::Enginyeria química
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spelling Facile fabrication of hybrid titanium(IV) isopropoxide/pozzolan nanosheets (TnS-Pz) of high photocatalytic activity: characterization and application for Cr(VI) reduction in an aqueous solutionNovack, Aline M.Dos Reis, Glaydson SimõesHackbarth, Fabíola V.Marinho, Belisa A.Ðolić, Maja B.Valle, José A. B.Hoffmann Sampaio, Carlos|||0000-0001-5840-1614Lima, Eder ClaudioDotto, Guillherme LuizUlson de Souza, Antônio AugustoVilar, Vítor J. P.Ulson de Souza, Selene M. A. GuelliPhotocatalysisTitanium(IV) isopropoxide/pozzolan synthesisHybrid materialHeterogeneous photocatalysisMetal photoreductionFotocatàlisiÀrees temàtiques de la UPC::Enginyeria químicaThis paper presents the synthesis of a hybrid material through the use of natural pozzolan and titanium(IV) isopropoxide using the sol-gel method and its application in the photocatalytic hexavalent chromium reduction. The characterization data indicated a mesoporous material possessing a surface area of 271.7 m2 g-1. The morphology studies (SEM and TEM) showed nanosheet hybrid structures. The analysis of DRUV, FTIR, XRD, and Mössbauer spectroscopy provides a different electronic structure of the synthetized material when compared with the originals, proving the hybridization process between pozzolan and titanium(IV) isopropoxide. The photocatalytic reduction of Cr(VI) to Cr(III) using the hybrid material showed a better performance than conventional photocatalysts (precursor and TiO2-P25). Operational conditions such as chromium initial concentration (0.02–0.20 mM), solution pH (3–6), and type of scavenger (citric or tartaric acid) were evaluated in order to determine the best experimental conditions for the Cr(VI) photoreduction. At their optimum (catalyst load of 15 mg L-1, tartaric acid as scavenger, [scavenger]0/[Cr(VI)]0 M ratio =¿3:1, pH 3, and 25 °C), the total photoreduction of 0.20 mM Cr(VI) was achieved in 180 min. The novel hybrid materials synthesized from pozzolan and titanium(IV) isopropoxide showed to be a potential catalyst for the Cr(VI) reduction in aqueous solution.The authors would like to acknowledge LABMASSA Mass Transfer Laboratory of the Federal University of Santa Catarina (UFSC), the supplier of all laboratory infrastructure used in this research project. Aline M. Novack acknowledges her scholarship supported by CAPES. Dr. Glaydson Simoes dos Reis is grateful to the Council for the Development of Higher Education at the Graduate Level, Brazil (CAPES) for his postdoctoral scholarship granted through National Postdoctoral Program (PNPD). Maja Dolic acknowledges to the grant from the Ministry of Education and Science of the Republic of Serbia (III 43009). This work was also financially supported by CAPES-PRINT, project number 88887.310560/2018-00 and Associate Laboratory LSRE-LCM - UIDB/50020/2020 - funded by national funds through FCT/MCTES (PIDDAC). Vítor J.P. Vilar acknowledges the 2017 FCT Individual Call to Scientific Employment Stimulus (CEECIND/01317/2017).Peer Reviewed20202020-05-3020202020-10-21journal articlehttp://purl.org/coar/resource_type/c_6501AMhttp://purl.org/coar/version/c_ab4af688f83e57aainfo:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/2117/330595https://dx.doi.org/10.1007/s11356-020-09178-1reponame:UPCommons. Portal del coneixement obert de la UPCinstname:Universitat Politècnica de Catalunya (UPC)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2info:eu-repo/semantics/openAccessoai:upcommons.upc.edu:2117/3305952026-05-27T15:37:01Z
dc.title.none.fl_str_mv Facile fabrication of hybrid titanium(IV) isopropoxide/pozzolan nanosheets (TnS-Pz) of high photocatalytic activity: characterization and application for Cr(VI) reduction in an aqueous solution
title Facile fabrication of hybrid titanium(IV) isopropoxide/pozzolan nanosheets (TnS-Pz) of high photocatalytic activity: characterization and application for Cr(VI) reduction in an aqueous solution
spellingShingle Facile fabrication of hybrid titanium(IV) isopropoxide/pozzolan nanosheets (TnS-Pz) of high photocatalytic activity: characterization and application for Cr(VI) reduction in an aqueous solution
Novack, Aline M.
Photocatalysis
Titanium(IV) isopropoxide/pozzolan synthesis
Hybrid material
Heterogeneous photocatalysis
Metal photoreduction
Fotocatàlisi
Àrees temàtiques de la UPC::Enginyeria química
title_short Facile fabrication of hybrid titanium(IV) isopropoxide/pozzolan nanosheets (TnS-Pz) of high photocatalytic activity: characterization and application for Cr(VI) reduction in an aqueous solution
title_full Facile fabrication of hybrid titanium(IV) isopropoxide/pozzolan nanosheets (TnS-Pz) of high photocatalytic activity: characterization and application for Cr(VI) reduction in an aqueous solution
title_fullStr Facile fabrication of hybrid titanium(IV) isopropoxide/pozzolan nanosheets (TnS-Pz) of high photocatalytic activity: characterization and application for Cr(VI) reduction in an aqueous solution
title_full_unstemmed Facile fabrication of hybrid titanium(IV) isopropoxide/pozzolan nanosheets (TnS-Pz) of high photocatalytic activity: characterization and application for Cr(VI) reduction in an aqueous solution
title_sort Facile fabrication of hybrid titanium(IV) isopropoxide/pozzolan nanosheets (TnS-Pz) of high photocatalytic activity: characterization and application for Cr(VI) reduction in an aqueous solution
dc.creator.none.fl_str_mv Novack, Aline M.
Dos Reis, Glaydson Simões
Hackbarth, Fabíola V.
Marinho, Belisa A.
Ðolić, Maja B.
Valle, José A. B.
Hoffmann Sampaio, Carlos|||0000-0001-5840-1614
Lima, Eder Claudio
Dotto, Guillherme Luiz
Ulson de Souza, Antônio Augusto
Vilar, Vítor J. P.
Ulson de Souza, Selene M. A. Guelli
author Novack, Aline M.
author_facet Novack, Aline M.
Dos Reis, Glaydson Simões
Hackbarth, Fabíola V.
Marinho, Belisa A.
Ðolić, Maja B.
Valle, José A. B.
Hoffmann Sampaio, Carlos|||0000-0001-5840-1614
Lima, Eder Claudio
Dotto, Guillherme Luiz
Ulson de Souza, Antônio Augusto
Vilar, Vítor J. P.
Ulson de Souza, Selene M. A. Guelli
author_role author
author2 Dos Reis, Glaydson Simões
Hackbarth, Fabíola V.
Marinho, Belisa A.
Ðolić, Maja B.
Valle, José A. B.
Hoffmann Sampaio, Carlos|||0000-0001-5840-1614
Lima, Eder Claudio
Dotto, Guillherme Luiz
Ulson de Souza, Antônio Augusto
Vilar, Vítor J. P.
Ulson de Souza, Selene M. A. Guelli
author2_role author
author
author
author
author
author
author
author
author
author
author
dc.subject.none.fl_str_mv Photocatalysis
Titanium(IV) isopropoxide/pozzolan synthesis
Hybrid material
Heterogeneous photocatalysis
Metal photoreduction
Fotocatàlisi
Àrees temàtiques de la UPC::Enginyeria química
topic Photocatalysis
Titanium(IV) isopropoxide/pozzolan synthesis
Hybrid material
Heterogeneous photocatalysis
Metal photoreduction
Fotocatàlisi
Àrees temàtiques de la UPC::Enginyeria química
description This paper presents the synthesis of a hybrid material through the use of natural pozzolan and titanium(IV) isopropoxide using the sol-gel method and its application in the photocatalytic hexavalent chromium reduction. The characterization data indicated a mesoporous material possessing a surface area of 271.7 m2 g-1. The morphology studies (SEM and TEM) showed nanosheet hybrid structures. The analysis of DRUV, FTIR, XRD, and Mössbauer spectroscopy provides a different electronic structure of the synthetized material when compared with the originals, proving the hybridization process between pozzolan and titanium(IV) isopropoxide. The photocatalytic reduction of Cr(VI) to Cr(III) using the hybrid material showed a better performance than conventional photocatalysts (precursor and TiO2-P25). Operational conditions such as chromium initial concentration (0.02–0.20 mM), solution pH (3–6), and type of scavenger (citric or tartaric acid) were evaluated in order to determine the best experimental conditions for the Cr(VI) photoreduction. At their optimum (catalyst load of 15 mg L-1, tartaric acid as scavenger, [scavenger]0/[Cr(VI)]0 M ratio =¿3:1, pH 3, and 25 °C), the total photoreduction of 0.20 mM Cr(VI) was achieved in 180 min. The novel hybrid materials synthesized from pozzolan and titanium(IV) isopropoxide showed to be a potential catalyst for the Cr(VI) reduction in aqueous solution.
publishDate 2020
dc.date.none.fl_str_mv 2020
2020-05-30
2020
2020-10-21
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
AM
http://purl.org/coar/version/c_ab4af688f83e57aa
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://hdl.handle.net/2117/330595
https://dx.doi.org/10.1007/s11356-020-09178-1
url https://hdl.handle.net/2117/330595
https://dx.doi.org/10.1007/s11356-020-09178-1
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
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
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:UPCommons. Portal del coneixement obert de la UPC
instname:Universitat Politècnica de Catalunya (UPC)
instname_str Universitat Politècnica de Catalunya (UPC)
reponame_str UPCommons. Portal del coneixement obert de la UPC
collection UPCommons. Portal del coneixement obert de la UPC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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