Effect of pyrolysis, impregnation, and calcination conditions on the physicochemical properties of TiO2/Biochar composites intended for photocatalytic applications

Biochars are outstanding materials obtained from the pyrolysis of biomass, possessing unique physicochemical properties that are attractive for many environmental applications, including photocatalysis. In this work, we have synthesized for the first time TiO2/Biochar composites using Aeroxide P25 T...

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Autores:
Castilla Caballero, Deyler Rafael
Hernández-Ramírez, Aracely
Vázquez-Rodríguez, Sofía
Colina-Márquez, José
Machuca-Martínez, Fiderman
Barraza-Burgos, Juan
Roa-Espinosa, Aicardo
Medina Guerrero, Astrid del Rosario
Gunasekaran, Sundaram
Colina-Márquez, José
Tipo de recurso:
Fecha de publicación:
2023
Institución:
Universidad Tecnológica de Bolívar
Repositorio:
Repositorio Institucional UTB
Idioma:
eng
OAI Identifier:
oai:repositorio.utb.edu.co:20.500.12585/12461
Acceso en línea:
https://hdl.handle.net/20.500.12585/12461
Palabra clave:
Biochar
Impregnation,
Calcination
Physicochemical characterization
Photoactivity
LEMB
Rights
embargoedAccess
License
http://purl.org/coar/access_right/c_f1cf
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dc.title.es_CO.fl_str_mv Effect of pyrolysis, impregnation, and calcination conditions on the physicochemical properties of TiO2/Biochar composites intended for photocatalytic applications
title Effect of pyrolysis, impregnation, and calcination conditions on the physicochemical properties of TiO2/Biochar composites intended for photocatalytic applications
spellingShingle Effect of pyrolysis, impregnation, and calcination conditions on the physicochemical properties of TiO2/Biochar composites intended for photocatalytic applications
Biochar
Impregnation,
Calcination
Physicochemical characterization
Photoactivity
LEMB
title_short Effect of pyrolysis, impregnation, and calcination conditions on the physicochemical properties of TiO2/Biochar composites intended for photocatalytic applications
title_full Effect of pyrolysis, impregnation, and calcination conditions on the physicochemical properties of TiO2/Biochar composites intended for photocatalytic applications
title_fullStr Effect of pyrolysis, impregnation, and calcination conditions on the physicochemical properties of TiO2/Biochar composites intended for photocatalytic applications
title_full_unstemmed Effect of pyrolysis, impregnation, and calcination conditions on the physicochemical properties of TiO2/Biochar composites intended for photocatalytic applications
title_sort Effect of pyrolysis, impregnation, and calcination conditions on the physicochemical properties of TiO2/Biochar composites intended for photocatalytic applications
dc.creator.fl_str_mv Castilla Caballero, Deyler Rafael
Hernández-Ramírez, Aracely
Vázquez-Rodríguez, Sofía
Colina-Márquez, José
Machuca-Martínez, Fiderman
Barraza-Burgos, Juan
Roa-Espinosa, Aicardo
Medina Guerrero, Astrid del Rosario
Gunasekaran, Sundaram
Colina-Márquez, José
dc.contributor.author.none.fl_str_mv Castilla Caballero, Deyler Rafael
Hernández-Ramírez, Aracely
Vázquez-Rodríguez, Sofía
Colina-Márquez, José
Machuca-Martínez, Fiderman
Barraza-Burgos, Juan
Roa-Espinosa, Aicardo
Medina Guerrero, Astrid del Rosario
Gunasekaran, Sundaram
Colina-Márquez, José
dc.subject.keywords.es_CO.fl_str_mv Biochar
Impregnation,
Calcination
Physicochemical characterization
Photoactivity
topic Biochar
Impregnation,
Calcination
Physicochemical characterization
Photoactivity
LEMB
dc.subject.armarc.none.fl_str_mv LEMB
description Biochars are outstanding materials obtained from the pyrolysis of biomass, possessing unique physicochemical properties that are attractive for many environmental applications, including photocatalysis. In this work, we have synthesized for the first time TiO2/Biochar composites using Aeroxide P25 TiO2 and biochars produced from the thermal treatment at low (or null) oxygen content of Colombian coconut shells. To explore and ultimately tune the final physicochemical properties of the TiO2/Biochars materials, a facile wet impregnation method was assessed, in which the following factors were evaluated: 1) Temperature and 2) %O2 in the pyrolysis of the biomass, 3) TiO2/Biochar ratio used in the impregnation and 4) Calcination temperature of the TiO2/Biochar composites. A comprehensive characterization of the novel composites was done, using techniques such as: XRD, XPS, BET, ATR-FTIR, diffuse reflectance, PL, SEM, and electrochemical analysis. The material synthesized with TPyrol = 350 ◦C, %O2 = 2.5, T/B = 0.8 and TCal of 800 ◦C presented notable properties such as low Eg, reduced recombination of e--h+ pairs, a high surface area, and a relatively high photogeneration of charges, and interestingly, it experienced phase transition from Anatase-Rutile to Anatase-Brookite. On the other hand, low TPyrol and high %O2 values conduct to hydrophilic functional groups on the TiO2/Biochar composites, whereas the use of higher TPyrol and TCal lead to a more hydrophobic character but promote the reduction of the recombination of photogenerated e--h+ pairs. As a result, this information is relevant for planning future applications of photocatalysis for degrading pollutants of different chemical nature.
publishDate 2023
dc.date.accessioned.none.fl_str_mv 2023-08-17T20:37:48Z
dc.date.available.none.fl_str_mv 2023-08-17T20:37:48Z
dc.date.issued.none.fl_str_mv 2023-06-02
dc.date.submitted.none.fl_str_mv 2023-08-17
dc.date.embargoEnd.es_CO.fl_str_mv eu-repo/date/embargoEnd/2023-06-03
dc.type.coarversion.fl_str_mv http://purl.org/coar/version/c_970fb48d4fbd8a85
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dc.identifier.citation.es_CO.fl_str_mv Castilla-Caballero, D., Hernandez-Ramirez, A., Vazquez-Rodriguez, S., Colina-Márquez, J., Machuca-Martínez, F., Barraza-Burgos, J., Roa-Espinosa, A., Medina-Guerrero, A., & Gunasekaran, S. (2023). Effect of pyrolysis, impregnation, and calcination conditions on the physicochemical properties of TiO2/Biochar composites intended for photocatalytic applications. Journal of Environmental Chemical Engineering, 11(3), 110274. https://doi.org/10.1016/j.jece.2023.110274
dc.identifier.uri.none.fl_str_mv https://hdl.handle.net/20.500.12585/12461
dc.identifier.doi.none.fl_str_mv 10.1016/j.jece.2023.110274
dc.identifier.instname.es_CO.fl_str_mv Universidad Tecnológica de Bolívar
dc.identifier.reponame.es_CO.fl_str_mv Repositorio Universidad Tecnológica de Bolívar
identifier_str_mv Castilla-Caballero, D., Hernandez-Ramirez, A., Vazquez-Rodriguez, S., Colina-Márquez, J., Machuca-Martínez, F., Barraza-Burgos, J., Roa-Espinosa, A., Medina-Guerrero, A., & Gunasekaran, S. (2023). Effect of pyrolysis, impregnation, and calcination conditions on the physicochemical properties of TiO2/Biochar composites intended for photocatalytic applications. Journal of Environmental Chemical Engineering, 11(3), 110274. https://doi.org/10.1016/j.jece.2023.110274
10.1016/j.jece.2023.110274
Universidad Tecnológica de Bolívar
Repositorio Universidad Tecnológica de Bolívar
url https://hdl.handle.net/20.500.12585/12461
dc.language.iso.es_CO.fl_str_mv eng
language eng
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dc.format.extent.none.fl_str_mv Archivo original:16 páginas
dc.format.mimetype.es_CO.fl_str_mv application/pdf
dc.coverage.spatial.none.fl_str_mv Colombia-México-Estados Unidos
dc.coverage.temporal.none.fl_str_mv 2017-2023
dc.publisher.place.es_CO.fl_str_mv Cartagena de Indias
dc.publisher.sede.es_CO.fl_str_mv Campus Tecnológico
dc.publisher.discipline.es_CO.fl_str_mv Ingeniería Ambiental
dc.source.es_CO.fl_str_mv Journal of Environmental Chemical Engineering
institution Universidad Tecnológica de Bolívar
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spelling Castilla Caballero, Deyler Rafael28384f4a-bfa7-4f46-b5df-29751d712be0600Hernández-Ramírez, Aracely1f3a3200-bc83-481a-b9c4-427af5641505Vázquez-Rodríguez, Sofíae0bc9e7c-6b5b-4892-962f-30cf2a70ba93Colina-Márquez, José39587799-ed8e-45d9-9f01-54dfe6d4de7eMachuca-Martínez, Fidermane46cf666-880a-44a1-9dc6-a5e1e6e6a664Barraza-Burgos, Juan64136613-9a63-45b4-b660-40a8723b2b1dRoa-Espinosa, Aicardo5d623d37-76cc-4607-8c07-41c0e261bff7Medina Guerrero, Astrid del Rosario08bc2e6c-1173-4d41-bb27-32a1d4a26a67Gunasekaran, Sundaram685b7040-ab80-48fc-b230-4468416dafffColina-Márquez, Joséa13f7e08-8b8e-463a-9940-ecb6195e673dColombia-México-Estados Unidos2017-20232023-08-17T20:37:48Z2023-08-17T20:37:48Z2023-06-022023-08-17eu-repo/date/embargoEnd/2023-06-03Castilla-Caballero, D., Hernandez-Ramirez, A., Vazquez-Rodriguez, S., Colina-Márquez, J., Machuca-Martínez, F., Barraza-Burgos, J., Roa-Espinosa, A., Medina-Guerrero, A., & Gunasekaran, S. (2023). Effect of pyrolysis, impregnation, and calcination conditions on the physicochemical properties of TiO2/Biochar composites intended for photocatalytic applications. Journal of Environmental Chemical Engineering, 11(3), 110274. https://doi.org/10.1016/j.jece.2023.110274https://hdl.handle.net/20.500.12585/1246110.1016/j.jece.2023.110274Universidad Tecnológica de BolívarRepositorio Universidad Tecnológica de BolívarBiochars are outstanding materials obtained from the pyrolysis of biomass, possessing unique physicochemical properties that are attractive for many environmental applications, including photocatalysis. In this work, we have synthesized for the first time TiO2/Biochar composites using Aeroxide P25 TiO2 and biochars produced from the thermal treatment at low (or null) oxygen content of Colombian coconut shells. To explore and ultimately tune the final physicochemical properties of the TiO2/Biochars materials, a facile wet impregnation method was assessed, in which the following factors were evaluated: 1) Temperature and 2) %O2 in the pyrolysis of the biomass, 3) TiO2/Biochar ratio used in the impregnation and 4) Calcination temperature of the TiO2/Biochar composites. A comprehensive characterization of the novel composites was done, using techniques such as: XRD, XPS, BET, ATR-FTIR, diffuse reflectance, PL, SEM, and electrochemical analysis. The material synthesized with TPyrol = 350 ◦C, %O2 = 2.5, T/B = 0.8 and TCal of 800 ◦C presented notable properties such as low Eg, reduced recombination of e--h+ pairs, a high surface area, and a relatively high photogeneration of charges, and interestingly, it experienced phase transition from Anatase-Rutile to Anatase-Brookite. On the other hand, low TPyrol and high %O2 values conduct to hydrophilic functional groups on the TiO2/Biochar composites, whereas the use of higher TPyrol and TCal lead to a more hydrophobic character but promote the reduction of the recombination of photogenerated e--h+ pairs. As a result, this information is relevant for planning future applications of photocatalysis for degrading pollutants of different chemical nature.Minciencias-Fulbright-Universidad del ValleArchivo original:16 páginasapplication/pdfengJournal of Environmental Chemical EngineeringEffect of pyrolysis, impregnation, and calcination conditions on the physicochemical properties of TiO2/Biochar composites intended for photocatalytic applicationsinfo:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_2df8fbb1http://purl.org/coar/version/c_970fb48d4fbd8a85BiocharImpregnation,CalcinationPhysicochemical characterizationPhotoactivityLEMBinfo:eu-repo/semantics/embargoedAccesshttp://purl.org/coar/access_right/c_f1cfCartagena de IndiasCampus TecnológicoIngeniería AmbientalPúblico generalM. Zeshan et al. Remediation of pesticides using TiO2 based photocatalytic strategies: a review Chemosphere (2022)S. Kundu et al. 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TiO2 supported on reed straw biochar as an adsorptive and photocatalytic composite for the efficient degradation of sulfamethoxazole in aqueous matrices Chemosphere (2017)http://purl.org/coar/resource_type/c_2df8fbb1ORIGINALArtículo para repositorio.pdfArtículo para repositorio.pdfDatos básicos (preprint)application/pdf98967https://repositorio.utb.edu.co/bitstream/20.500.12585/12461/1/Art%c3%adculo%20para%20repositorio.pdf4b36ec09c0f3eb5bf89b7fcaf06f9beaMD51LICENSElicense.txtlicense.txttext/plain; charset=utf-83182https://repositorio.utb.edu.co/bitstream/20.500.12585/12461/2/license.txte20ad307a1c5f3f25af9304a7a7c86b6MD52TEXTArtículo para repositorio.pdf.txtArtículo para repositorio.pdf.txtExtracted texttext/plain1671https://repositorio.utb.edu.co/bitstream/20.500.12585/12461/3/Art%c3%adculo%20para%20repositorio.pdf.txtc3ca756d58366b2def57e820e93f7b37MD53THUMBNAILArtículo para repositorio.pdf.jpgArtículo para repositorio.pdf.jpgGenerated 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