TiO2 nanowires doped with hæmatite nanoparticles for enhanced photocatalytic degradation of methyl orange.

Autores
Vinuesa, Ariel José; Irusta Alderete, Silvia; Saux, Clara
Año de publicación
2021
Idioma
inglés
Tipo de recurso
documento de conferencia
Estado
versión publicada
Descripción
Hæmatite nanoparticles with a truncated dodecahedron crystal shape were synthesized by hydrothermal method at 180 °C and self-generated pressure. FeCl3.7H2O, acetic acid and NaOH were employed as precursors. This crystal shape has an improved performance in the photo-Fenton reaction due to terminal Fe exposure. The nanoparticles were previously characterized and further added to a sol-gel mixture to prepare the TiO2 nanowires with a coaxial setup for the electrospinning. The composite nanowires were characterized through HR-TEM, UV-Vis DRS, TGA and XRD and tested in the photodegradation of methyl orange with the addition of H2O2. Rutile and anatase and hematite were identified in the diffraction patterns. By TEM it was possible to confirm a good nanoparticle dispersion along the nanowires. The nanowires showed an improved absorption in the visible spectrum compared to that of pure TiO2. The discoloration yield was 85% after 2 h of reaction. This result is comparable to the one obtained with a suspension of hæmatite nanoparticles alone. It should be noted that the colourant discoloration under UV activated H2O2 reached only 40 %. In conclusion, these composite nanowires have two attractive features with regard to water treatment technologies, namely the advantage of easy recovery and the possibility to carry out the reaction without H2O2, due to the enhanced semiconductor capacity of TiO2.
Fil: Vinuesa, Ariel José. Universidad Tecnológica Nacional. Facultad Regional Córdoba. Centro de Investigación y Tecnología Química. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina.
Fil: Irusta Alderete, Silvia. Universidad de Zaragoza. Instituto de Nanociencia y Materiales de Aragón; España.
Fil: Saux, Clara. Universidad Tecnológica Nacional. Facultad Regional Córdoba. Centro de Investigación y Tecnología Química. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina.
Materia
TiO2 nanowires
Photodegradation
Methyl orange
Nivel de accesibilidad
acceso abierto
Condiciones de uso
2022-05-23T17:50:02Z
Repositorio
Repositorio Institucional Abierto (UTN)
Institución
Universidad Tecnológica Nacional
OAI Identificador
oai:ria.utn.edu.ar:20.500.12272/6425
Acceder
id RIAUTN_ed7132b2cbd495e7c6cabb01799e1227
oai_identifier_str oai:ria.utn.edu.ar:20.500.12272/6425
network_acronym_str RIAUTN
repository_id_str a
network_name_str Repositorio Institucional Abierto (UTN)
spelling TiO2 nanowires doped with hæmatite nanoparticles for enhanced photocatalytic degradation of methyl orange.Vinuesa, Ariel JoséIrusta Alderete, SilviaSaux, ClaraTiO2 nanowiresPhotodegradationMethyl orangeHæmatite nanoparticles with a truncated dodecahedron crystal shape were synthesized by hydrothermal method at 180 °C and self-generated pressure. FeCl3.7H2O, acetic acid and NaOH were employed as precursors. This crystal shape has an improved performance in the photo-Fenton reaction due to terminal Fe exposure. The nanoparticles were previously characterized and further added to a sol-gel mixture to prepare the TiO2 nanowires with a coaxial setup for the electrospinning. The composite nanowires were characterized through HR-TEM, UV-Vis DRS, TGA and XRD and tested in the photodegradation of methyl orange with the addition of H2O2. Rutile and anatase and hematite were identified in the diffraction patterns. By TEM it was possible to confirm a good nanoparticle dispersion along the nanowires. The nanowires showed an improved absorption in the visible spectrum compared to that of pure TiO2. The discoloration yield was 85% after 2 h of reaction. This result is comparable to the one obtained with a suspension of hæmatite nanoparticles alone. It should be noted that the colourant discoloration under UV activated H2O2 reached only 40 %. In conclusion, these composite nanowires have two attractive features with regard to water treatment technologies, namely the advantage of easy recovery and the possibility to carry out the reaction without H2O2, due to the enhanced semiconductor capacity of TiO2.Fil: Vinuesa, Ariel José. Universidad Tecnológica Nacional. Facultad Regional Córdoba. Centro de Investigación y Tecnología Química. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina.Fil: Irusta Alderete, Silvia. Universidad de Zaragoza. Instituto de Nanociencia y Materiales de Aragón; España.Fil: Saux, Clara. Universidad Tecnológica Nacional. Facultad Regional Córdoba. Centro de Investigación y Tecnología Química. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina.2022-05-23T17:50:02Z2022-05-23T17:50:02Z2021info:eu-repo/semantics/conferenceObjectinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_5794info:ar-repo/semantics/documentoDeConferenciamswordapplication/vnd.openxmlformats-officedocument.wordprocessingml.document3° Congreso en Energía, Eficiencia y Sustentabilidad Ambiental (2021).http://hdl.handle.net/20.500.12272/6425enginfo:eu-repo/semantics/openAccess2022-05-23T17:50:02Zhttp://creativecommons.org/licenses/by-nc-nd/4.0/Attribution-NonCommercial-NoDerivatives 4.0 InternacionalSaux, ClaraNo comercial. Sólo de uso académico.reponame:Repositorio Institucional Abierto (UTN)instname:Universidad Tecnológica Nacional2026-09-24T12:45:13Zoai:ria.utn.edu.ar:20.500.12272/6425instacron:UTNInstitucionalhttp://ria.utn.edu.ar/Universidad públicaNo correspondehttp://ria.utn.edu.ar/oaigestionria@rec.utn.edu.ar; fsuarez@rec.utn.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:a2026-09-24 12:45:14.576Repositorio Institucional Abierto (UTN) - Universidad Tecnológica Nacionalfalse
dc.title.none.fl_str_mv TiO2 nanowires doped with hæmatite nanoparticles for enhanced photocatalytic degradation of methyl orange.
title TiO2 nanowires doped with hæmatite nanoparticles for enhanced photocatalytic degradation of methyl orange.
spellingShingle TiO2 nanowires doped with hæmatite nanoparticles for enhanced photocatalytic degradation of methyl orange.
Vinuesa, Ariel José
TiO2 nanowires
Photodegradation
Methyl orange
title_short TiO2 nanowires doped with hæmatite nanoparticles for enhanced photocatalytic degradation of methyl orange.
title_full TiO2 nanowires doped with hæmatite nanoparticles for enhanced photocatalytic degradation of methyl orange.
title_fullStr TiO2 nanowires doped with hæmatite nanoparticles for enhanced photocatalytic degradation of methyl orange.
title_full_unstemmed TiO2 nanowires doped with hæmatite nanoparticles for enhanced photocatalytic degradation of methyl orange.
title_sort TiO2 nanowires doped with hæmatite nanoparticles for enhanced photocatalytic degradation of methyl orange.
dc.creator.none.fl_str_mv Vinuesa, Ariel José
Irusta Alderete, Silvia
Saux, Clara
author Vinuesa, Ariel José
author_facet Vinuesa, Ariel José
Irusta Alderete, Silvia
Saux, Clara
author_role author
author2 Irusta Alderete, Silvia
Saux, Clara
author2_role author
author
dc.subject.none.fl_str_mv TiO2 nanowires
Photodegradation
Methyl orange
topic TiO2 nanowires
Photodegradation
Methyl orange
dc.description.none.fl_txt_mv Hæmatite nanoparticles with a truncated dodecahedron crystal shape were synthesized by hydrothermal method at 180 °C and self-generated pressure. FeCl3.7H2O, acetic acid and NaOH were employed as precursors. This crystal shape has an improved performance in the photo-Fenton reaction due to terminal Fe exposure. The nanoparticles were previously characterized and further added to a sol-gel mixture to prepare the TiO2 nanowires with a coaxial setup for the electrospinning. The composite nanowires were characterized through HR-TEM, UV-Vis DRS, TGA and XRD and tested in the photodegradation of methyl orange with the addition of H2O2. Rutile and anatase and hematite were identified in the diffraction patterns. By TEM it was possible to confirm a good nanoparticle dispersion along the nanowires. The nanowires showed an improved absorption in the visible spectrum compared to that of pure TiO2. The discoloration yield was 85% after 2 h of reaction. This result is comparable to the one obtained with a suspension of hæmatite nanoparticles alone. It should be noted that the colourant discoloration under UV activated H2O2 reached only 40 %. In conclusion, these composite nanowires have two attractive features with regard to water treatment technologies, namely the advantage of easy recovery and the possibility to carry out the reaction without H2O2, due to the enhanced semiconductor capacity of TiO2.
Fil: Vinuesa, Ariel José. Universidad Tecnológica Nacional. Facultad Regional Córdoba. Centro de Investigación y Tecnología Química. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina.
Fil: Irusta Alderete, Silvia. Universidad de Zaragoza. Instituto de Nanociencia y Materiales de Aragón; España.
Fil: Saux, Clara. Universidad Tecnológica Nacional. Facultad Regional Córdoba. Centro de Investigación y Tecnología Química. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina.
description Hæmatite nanoparticles with a truncated dodecahedron crystal shape were synthesized by hydrothermal method at 180 °C and self-generated pressure. FeCl3.7H2O, acetic acid and NaOH were employed as precursors. This crystal shape has an improved performance in the photo-Fenton reaction due to terminal Fe exposure. The nanoparticles were previously characterized and further added to a sol-gel mixture to prepare the TiO2 nanowires with a coaxial setup for the electrospinning. The composite nanowires were characterized through HR-TEM, UV-Vis DRS, TGA and XRD and tested in the photodegradation of methyl orange with the addition of H2O2. Rutile and anatase and hematite were identified in the diffraction patterns. By TEM it was possible to confirm a good nanoparticle dispersion along the nanowires. The nanowires showed an improved absorption in the visible spectrum compared to that of pure TiO2. The discoloration yield was 85% after 2 h of reaction. This result is comparable to the one obtained with a suspension of hæmatite nanoparticles alone. It should be noted that the colourant discoloration under UV activated H2O2 reached only 40 %. In conclusion, these composite nanowires have two attractive features with regard to water treatment technologies, namely the advantage of easy recovery and the possibility to carry out the reaction without H2O2, due to the enhanced semiconductor capacity of TiO2.
publishDate 2021
dc.date.none.fl_str_mv 2021
2022-05-23T17:50:02Z
2022-05-23T17:50:02Z
dc.type.none.fl_str_mv info:eu-repo/semantics/conferenceObject
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_5794
info:ar-repo/semantics/documentoDeConferencia
format conferenceObject
status_str publishedVersion
dc.identifier.none.fl_str_mv 3° Congreso en Energía, Eficiencia y Sustentabilidad Ambiental (2021).
http://hdl.handle.net/20.500.12272/6425
identifier_str_mv 3° Congreso en Energía, Eficiencia y Sustentabilidad Ambiental (2021).
url http://hdl.handle.net/20.500.12272/6425
dc.language.none.fl_str_mv eng
language eng
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
2022-05-23T17:50:02Z
http://creativecommons.org/licenses/by-nc-nd/4.0/
Attribution-NonCommercial-NoDerivatives 4.0 Internacional
Saux, Clara
No comercial. Sólo de uso académico.
eu_rights_str_mv openAccess
rights_invalid_str_mv 2022-05-23T17:50:02Z
http://creativecommons.org/licenses/by-nc-nd/4.0/
Attribution-NonCommercial-NoDerivatives 4.0 Internacional
Saux, Clara
No comercial. Sólo de uso académico.
dc.format.none.fl_str_mv msword
application/vnd.openxmlformats-officedocument.wordprocessingml.document
dc.source.none.fl_str_mv reponame:Repositorio Institucional Abierto (UTN)
instname:Universidad Tecnológica Nacional
reponame_str Repositorio Institucional Abierto (UTN)
collection Repositorio Institucional Abierto (UTN)
instname_str Universidad Tecnológica Nacional
repository.name.fl_str_mv Repositorio Institucional Abierto (UTN) - Universidad Tecnológica Nacional
repository.mail.fl_str_mv gestionria@rec.utn.edu.ar; fsuarez@rec.utn.edu.ar
_version_ 1877230896222830592
score 13.24418

Publicaciones similares