Photocatalytic activity enhancement by noble metal deposition on faceted F-TiO<inf>2</inf> synthesised by microwave assisted method. A study of selective oxidation of gas-phase ethanol in a FBPR reactor

In the present work, fluorinated titanium dioxide (TiO2-F) with high exposition of facet {001} was prepared by following a facile and high yield hydrothermal method assisted by microwave. This faceted TiO2 was then modified by Au or Ag deposition at two different metal loadings (0.125 and 0.25 wt%)....

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Authors: Hernández-Laverde, M., Murcia, J. J., Morante, N., Sannino, D., Vaiano, V., Navío, José Antonio, Hidalgo, M. C.
Format: article
Status:Versión aceptada para publicación
Publication Date:2024
Country:España
Institution:Consejo Superior de Investigaciones Científicas (CSIC)
Repository:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/389493
Online Access:http://hdl.handle.net/10261/389493
https://api.elsevier.com/content/abstract/scopus_id/85188587463
Access Level:Open access
Keyword:Ag
Au
F-doped
Faceted TiO 2
VOC
Microwave
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repository_id_str
dc.title.none.fl_str_mv Photocatalytic activity enhancement by noble metal deposition on faceted F-TiO<inf>2</inf> synthesised by microwave assisted method. A study of selective oxidation of gas-phase ethanol in a FBPR reactor
title Photocatalytic activity enhancement by noble metal deposition on faceted F-TiO<inf>2</inf> synthesised by microwave assisted method. A study of selective oxidation of gas-phase ethanol in a FBPR reactor
spellingShingle Photocatalytic activity enhancement by noble metal deposition on faceted F-TiO<inf>2</inf> synthesised by microwave assisted method. A study of selective oxidation of gas-phase ethanol in a FBPR reactor
Hernández-Laverde, M.
Ag
Au
F-doped
Faceted TiO 2
VOC
Microwave
title_short Photocatalytic activity enhancement by noble metal deposition on faceted F-TiO<inf>2</inf> synthesised by microwave assisted method. A study of selective oxidation of gas-phase ethanol in a FBPR reactor
title_full Photocatalytic activity enhancement by noble metal deposition on faceted F-TiO<inf>2</inf> synthesised by microwave assisted method. A study of selective oxidation of gas-phase ethanol in a FBPR reactor
title_fullStr Photocatalytic activity enhancement by noble metal deposition on faceted F-TiO<inf>2</inf> synthesised by microwave assisted method. A study of selective oxidation of gas-phase ethanol in a FBPR reactor
title_full_unstemmed Photocatalytic activity enhancement by noble metal deposition on faceted F-TiO<inf>2</inf> synthesised by microwave assisted method. A study of selective oxidation of gas-phase ethanol in a FBPR reactor
title_sort Photocatalytic activity enhancement by noble metal deposition on faceted F-TiO<inf>2</inf> synthesised by microwave assisted method. A study of selective oxidation of gas-phase ethanol in a FBPR reactor
dc.creator.none.fl_str_mv Hernández-Laverde, M.
Murcia, J. J.
Morante, N.
Sannino, D.
Vaiano, V.
Navío, José Antonio
Hidalgo, M. C.
author Hernández-Laverde, M.
author_facet Hernández-Laverde, M.
Murcia, J. J.
Morante, N.
Sannino, D.
Vaiano, V.
Navío, José Antonio
Hidalgo, M. C.
author_role author
author2 Murcia, J. J.
Morante, N.
Sannino, D.
Vaiano, V.
Navío, José Antonio
Hidalgo, M. C.
author2_role author
author
author
author
author
author
dc.contributor.none.fl_str_mv Universidad de Barcelona
Ministerio de Ciencia, Tecnología e Innovación (Colombia)
Gobernación de Boyacá
Fondo Nacional de Financiamiento para la Ciencia, la Tecnología y la Innovación (Colombia)
Agencia Estatal de Investigación (España)
Ministerio de Ciencia e Innovación (España)
Ministerio de Salud y Protección Social (Colombia)
Universidad Pedagógica y Tecnológica de Colombia
Universidad Nacional Abierta y a Distancia (Colombia)
Hernández-Laverde, M [0000-0001-5353-8347]
Murcia, J. J. [0000-0002-6237-9517]
Morante, N [0000-0003-0123-2690]
Sannino, D [0000-0002-1369-7033]
Vaiano, V [0000-0002-2205-7871]
Navío, José Antonio [0000-0002-7884-1067]
Hidalgo, M.C [0000-0001-9862-6578]
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Ag
Au
F-doped
Faceted TiO 2
VOC
Microwave
topic Ag
Au
F-doped
Faceted TiO 2
VOC
Microwave
description In the present work, fluorinated titanium dioxide (TiO2-F) with high exposition of facet {001} was prepared by following a facile and high yield hydrothermal method assisted by microwave. This faceted TiO2 was then modified by Au or Ag deposition at two different metal loadings (0.125 and 0.25 wt%). A wide physicochemical characterisation of the materials was performed. X-ray difractograms showed high {001} facet exposition in all materials. By X-ray fluorescence it was found that the different samples contained about 5% of fluor. All samples presented high surface area and high uniformity and homogeneity of particles, which highlights the good properties that can be achieved by the microwave synthesis method compared to conventional hydrothermal methods. Oxidation state of the noble metals was studied by XPS. On the other side, TiO2-F and the metallised titania powders were immobilised on polystyrene pellets (PS) for evaluating their gas photocatalytic activity in volatile organic compounds (VOCs) decontamination by following the reaction of photoxidation of ethanol in gas phase. It was found that activity was considerably improved by the addition of noble metals, obtaining high conversion and selectivity to CO2. It is remarkable that the selectivity to CO is almost zero. The highest efficiency was found for the faceted TiO2-F sample with the lowest Au loading (0.125 wt%) immobilised on PS where 91% ethanol conversion and 100% CO2 selectivity were achieved. Different reaction variables were also studied.
publishDate 2024
dc.date.none.fl_str_mv 2024
2025
2025
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Postprint
info:eu-repo/semantics/acceptedVersion
format article
status_str acceptedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/389493
https://api.elsevier.com/content/abstract/scopus_id/85188587463
url http://hdl.handle.net/10261/389493
https://api.elsevier.com/content/abstract/scopus_id/85188587463
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv #PLACEHOLDER_PARENT_METADATA_VALUE#
info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2021-2023/PID2021-122413NB-I00
https://doi.org/10.1016/j.cattod.2024.114645
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv aplication/pdf
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
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spelling Photocatalytic activity enhancement by noble metal deposition on faceted F-TiO<inf>2</inf> synthesised by microwave assisted method. A study of selective oxidation of gas-phase ethanol in a FBPR reactorHernández-Laverde, M.Murcia, J. J.Morante, N.Sannino, D.Vaiano, V.Navío, José AntonioHidalgo, M. C.AgAuF-dopedFaceted TiO 2VOCMicrowaveIn the present work, fluorinated titanium dioxide (TiO2-F) with high exposition of facet {001} was prepared by following a facile and high yield hydrothermal method assisted by microwave. This faceted TiO2 was then modified by Au or Ag deposition at two different metal loadings (0.125 and 0.25 wt%). A wide physicochemical characterisation of the materials was performed. X-ray difractograms showed high {001} facet exposition in all materials. By X-ray fluorescence it was found that the different samples contained about 5% of fluor. All samples presented high surface area and high uniformity and homogeneity of particles, which highlights the good properties that can be achieved by the microwave synthesis method compared to conventional hydrothermal methods. Oxidation state of the noble metals was studied by XPS. On the other side, TiO2-F and the metallised titania powders were immobilised on polystyrene pellets (PS) for evaluating their gas photocatalytic activity in volatile organic compounds (VOCs) decontamination by following the reaction of photoxidation of ethanol in gas phase. It was found that activity was considerably improved by the addition of noble metals, obtaining high conversion and selectivity to CO2. It is remarkable that the selectivity to CO is almost zero. The highest efficiency was found for the faceted TiO2-F sample with the lowest Au loading (0.125 wt%) immobilised on PS where 91% ethanol conversion and 100% CO2 selectivity were achieved. Different reaction variables were also studied.This Special Issue is dedicated to honor the retirement of Prof. Santiago Esplugas at the Universitat de Barcelona (UB, Spain), a key figure in the area of Catalytic Advanced Oxidation Processes M. Hernández-Laverde thanks Ministerio de Ciencia Tecnología e Innovación de Colombia (Minciencias) and Gobernación de Boyacá for concession of researcher grant (OCAD- Fondo Nacional de Financiamiento para la Ciencia, la Tecnología e Innovación (FCTel) del Sistema general de regalías, Becas de Excelencia Doctoral del Bicentenario). Part of this work was funded by the Ministerio de Ciencia, Tecnología e Innovación – Minciencias and Ministerio de Salud y Protección Social, Project 110991891727, Universidad Pedagógica y Tecnológica de Colombia (UPTC) Project SGI 3393 and SGI 3575 and Universidad Nacional Abierta y a Distancia (UNAD). Project PID2021–122413NB-I00 funded by MCIN/ AEI /10.13039/501100011033/FEDER (Ministry of Science and Innovation and Agencia Estatal de Investigación, Spain) is acknowledged.Peer reviewedElsevierUniversidad de BarcelonaMinisterio de Ciencia, Tecnología e Innovación (Colombia)Gobernación de BoyacáFondo Nacional de Financiamiento para la Ciencia, la Tecnología y la Innovación (Colombia)Agencia Estatal de Investigación (España)Ministerio de Ciencia e Innovación (España)Ministerio de Salud y Protección Social (Colombia)Universidad Pedagógica y Tecnológica de ColombiaUniversidad Nacional Abierta y a Distancia (Colombia)Hernández-Laverde, M [0000-0001-5353-8347]Murcia, J. J. [0000-0002-6237-9517]Morante, N [0000-0003-0123-2690]Sannino, D [0000-0002-1369-7033]Vaiano, V [0000-0002-2205-7871]Navío, José Antonio [0000-0002-7884-1067]Hidalgo, M.C [0000-0001-9862-6578]Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]202520252024info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Postprintinfo:eu-repo/semantics/acceptedVersionaplication/pdfhttp://hdl.handle.net/10261/389493https://api.elsevier.com/content/abstract/scopus_id/85188587463reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Inglés#PLACEHOLDER_PARENT_METADATA_VALUE#info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2021-2023/PID2021-122413NB-I00https://doi.org/10.1016/j.cattod.2024.114645Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/3894932026-05-22T06:33:51Z
score 15,228081

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