Co2TiO4/reduced graphene oxide nanohybrids for electrochemical sensing applications

Autores
Venegas, Constanza J.; Gutierrez, Fabiana Andrea; Eguílaz Rubio, Marcos; Marco, José F.; Reeves-McLaren, Nik; Rivas, Gustavo Adolfo; Ruiz-León, Domingo; Bollo, Soledad
Año de publicación
2019
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
For the first time, the synthesis, characterization, and analytical application for hydrogen peroxide quantification of the hybrid materials of Co2TiO4 (CTO) and reduced graphene oxide (RGO) is reported, using in situ (CTO/RGO) and ex situ (CTO+RGO) preparations. This synthesis for obtaining nanostructured CTO is based on a one-step hydrothermal synthesis, with new precursors and low temperatures. The morphology, structure, and composition of the synthesized materials were examined using scanning electron microscopy, X-ray diffraction (XRD), neutron powder diffraction (NPD), and X-ray photoelectron spectroscopy (XPS). Rietveld refinements using neutron diffraction data were conducted to determine the cation distributions in CTO. Hybrid materials were also characterized by Brunauer-Emmett-Teller adsorption isotherms, Scanning Electron microscopy, and scanning electrochemical microscopy. From an analytical point of view, we evaluated the electrochemical reduction of hydrogen peroxide on glassy carbon electrodes modified with hybrid materials. The analytical detection of hydrogen peroxide using CTO/RGO showed 11 and 5 times greater sensitivity in the detection of hydrogen peroxide compared with that of pristine CTO and RGO, respectively, and a two-fold increase compared with that of the RGO+CTO modified electrode. These results demonstrate that there is a synergistic effect between CTO and RGO that is more significant when the hybrid is synthetized through in situ methodology.
Fil: Venegas, Constanza J.. Universidad de Chile; Chile. Universidad de Santiago de Chile; Chile
Fil: Gutierrez, Fabiana Andrea. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Investigaciones en Físico-química de Córdoba. Universidad Nacional de Córdoba. Facultad de Ciencias Químicas. Instituto de Investigaciones en Físico-química de Córdoba; Argentina
Fil: Eguílaz Rubio, Marcos. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Investigaciones en Físico-química de Córdoba. Universidad Nacional de Córdoba. Facultad de Ciencias Químicas. Instituto de Investigaciones en Físico-química de Córdoba; Argentina
Fil: Marco, José F.. Consejo Superior de Investigaciones Científicas; España
Fil: Reeves-McLaren, Nik. University Of Sheffield; Reino Unido
Fil: Rivas, Gustavo Adolfo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Investigaciones en Físico-química de Córdoba. Universidad Nacional de Córdoba. Facultad de Ciencias Químicas. Instituto de Investigaciones en Físico-química de Córdoba; Argentina
Fil: Ruiz-León, Domingo. Universidad de Santiago de Chile; Chile
Fil: Bollo, Soledad. Universidad de Chile; Chile
Materia
CO2TIO4
ELECTROCHEMICAL SENSORS
EX SITU SYNTHESIS
H2O2 DETECTION
HYBRID MATERIALS
IN SITU SYNTHESIS
REDUCED GRAPHENE OXIDE
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/125638
Acceder
id CONICETDig_efd4265669235467b6844febd47dd07e
oai_identifier_str oai:ri.conicet.gov.ar:11336/125638
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Co2TiO4/reduced graphene oxide nanohybrids for electrochemical sensing applicationsVenegas, Constanza J.Gutierrez, Fabiana AndreaEguílaz Rubio, MarcosMarco, José F.Reeves-McLaren, NikRivas, Gustavo AdolfoRuiz-León, DomingoBollo, SoledadCO2TIO4ELECTROCHEMICAL SENSORSEX SITU SYNTHESISH2O2 DETECTIONHYBRID MATERIALSIN SITU SYNTHESISREDUCED GRAPHENE OXIDEhttps://purl.org/becyt/ford/1.4https://purl.org/becyt/ford/1For the first time, the synthesis, characterization, and analytical application for hydrogen peroxide quantification of the hybrid materials of Co2TiO4 (CTO) and reduced graphene oxide (RGO) is reported, using in situ (CTO/RGO) and ex situ (CTO+RGO) preparations. This synthesis for obtaining nanostructured CTO is based on a one-step hydrothermal synthesis, with new precursors and low temperatures. The morphology, structure, and composition of the synthesized materials were examined using scanning electron microscopy, X-ray diffraction (XRD), neutron powder diffraction (NPD), and X-ray photoelectron spectroscopy (XPS). Rietveld refinements using neutron diffraction data were conducted to determine the cation distributions in CTO. Hybrid materials were also characterized by Brunauer-Emmett-Teller adsorption isotherms, Scanning Electron microscopy, and scanning electrochemical microscopy. From an analytical point of view, we evaluated the electrochemical reduction of hydrogen peroxide on glassy carbon electrodes modified with hybrid materials. The analytical detection of hydrogen peroxide using CTO/RGO showed 11 and 5 times greater sensitivity in the detection of hydrogen peroxide compared with that of pristine CTO and RGO, respectively, and a two-fold increase compared with that of the RGO+CTO modified electrode. These results demonstrate that there is a synergistic effect between CTO and RGO that is more significant when the hybrid is synthetized through in situ methodology.Fil: Venegas, Constanza J.. Universidad de Chile; Chile. Universidad de Santiago de Chile; ChileFil: Gutierrez, Fabiana Andrea. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Investigaciones en Físico-química de Córdoba. Universidad Nacional de Córdoba. Facultad de Ciencias Químicas. Instituto de Investigaciones en Físico-química de Córdoba; ArgentinaFil: Eguílaz Rubio, Marcos. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Investigaciones en Físico-química de Córdoba. Universidad Nacional de Córdoba. Facultad de Ciencias Químicas. Instituto de Investigaciones en Físico-química de Córdoba; ArgentinaFil: Marco, José F.. Consejo Superior de Investigaciones Científicas; EspañaFil: Reeves-McLaren, Nik. University Of Sheffield; Reino UnidoFil: Rivas, Gustavo Adolfo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Investigaciones en Físico-química de Córdoba. Universidad Nacional de Córdoba. Facultad de Ciencias Químicas. Instituto de Investigaciones en Físico-química de Córdoba; ArgentinaFil: Ruiz-León, Domingo. Universidad de Santiago de Chile; ChileFil: Bollo, Soledad. Universidad de Chile; ChileMDPI AG2019-11info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/125638Venegas, Constanza J.; Gutierrez, Fabiana Andrea; Eguílaz Rubio, Marcos; Marco, José F.; Reeves-McLaren, Nik; et al.; Co2TiO4/reduced graphene oxide nanohybrids for electrochemical sensing applications; MDPI AG; Nanomaterials; 9; 11; 11-2019; 1-182079-4991CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://www.mdpi.com/2079-4991/9/11/1611info:eu-repo/semantics/altIdentifier/doi/10.3390/nano9111611info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-22T11:03:57Zoai:ri.conicet.gov.ar:11336/125638instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-10-22 11:03:57.757CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Co2TiO4/reduced graphene oxide nanohybrids for electrochemical sensing applications
title Co2TiO4/reduced graphene oxide nanohybrids for electrochemical sensing applications
spellingShingle Co2TiO4/reduced graphene oxide nanohybrids for electrochemical sensing applications
Venegas, Constanza J.
CO2TIO4
ELECTROCHEMICAL SENSORS
EX SITU SYNTHESIS
H2O2 DETECTION
HYBRID MATERIALS
IN SITU SYNTHESIS
REDUCED GRAPHENE OXIDE
title_short Co2TiO4/reduced graphene oxide nanohybrids for electrochemical sensing applications
title_full Co2TiO4/reduced graphene oxide nanohybrids for electrochemical sensing applications
title_fullStr Co2TiO4/reduced graphene oxide nanohybrids for electrochemical sensing applications
title_full_unstemmed Co2TiO4/reduced graphene oxide nanohybrids for electrochemical sensing applications
title_sort Co2TiO4/reduced graphene oxide nanohybrids for electrochemical sensing applications
dc.creator.none.fl_str_mv Venegas, Constanza J.
Gutierrez, Fabiana Andrea
Eguílaz Rubio, Marcos
Marco, José F.
Reeves-McLaren, Nik
Rivas, Gustavo Adolfo
Ruiz-León, Domingo
Bollo, Soledad
author Venegas, Constanza J.
author_facet Venegas, Constanza J.
Gutierrez, Fabiana Andrea
Eguílaz Rubio, Marcos
Marco, José F.
Reeves-McLaren, Nik
Rivas, Gustavo Adolfo
Ruiz-León, Domingo
Bollo, Soledad
author_role author
author2 Gutierrez, Fabiana Andrea
Eguílaz Rubio, Marcos
Marco, José F.
Reeves-McLaren, Nik
Rivas, Gustavo Adolfo
Ruiz-León, Domingo
Bollo, Soledad
author2_role author
author
author
author
author
author
author
dc.subject.none.fl_str_mv CO2TIO4
ELECTROCHEMICAL SENSORS
EX SITU SYNTHESIS
H2O2 DETECTION
HYBRID MATERIALS
IN SITU SYNTHESIS
REDUCED GRAPHENE OXIDE
topic CO2TIO4
ELECTROCHEMICAL SENSORS
EX SITU SYNTHESIS
H2O2 DETECTION
HYBRID MATERIALS
IN SITU SYNTHESIS
REDUCED GRAPHENE OXIDE
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.4
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv For the first time, the synthesis, characterization, and analytical application for hydrogen peroxide quantification of the hybrid materials of Co2TiO4 (CTO) and reduced graphene oxide (RGO) is reported, using in situ (CTO/RGO) and ex situ (CTO+RGO) preparations. This synthesis for obtaining nanostructured CTO is based on a one-step hydrothermal synthesis, with new precursors and low temperatures. The morphology, structure, and composition of the synthesized materials were examined using scanning electron microscopy, X-ray diffraction (XRD), neutron powder diffraction (NPD), and X-ray photoelectron spectroscopy (XPS). Rietveld refinements using neutron diffraction data were conducted to determine the cation distributions in CTO. Hybrid materials were also characterized by Brunauer-Emmett-Teller adsorption isotherms, Scanning Electron microscopy, and scanning electrochemical microscopy. From an analytical point of view, we evaluated the electrochemical reduction of hydrogen peroxide on glassy carbon electrodes modified with hybrid materials. The analytical detection of hydrogen peroxide using CTO/RGO showed 11 and 5 times greater sensitivity in the detection of hydrogen peroxide compared with that of pristine CTO and RGO, respectively, and a two-fold increase compared with that of the RGO+CTO modified electrode. These results demonstrate that there is a synergistic effect between CTO and RGO that is more significant when the hybrid is synthetized through in situ methodology.
Fil: Venegas, Constanza J.. Universidad de Chile; Chile. Universidad de Santiago de Chile; Chile
Fil: Gutierrez, Fabiana Andrea. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Investigaciones en Físico-química de Córdoba. Universidad Nacional de Córdoba. Facultad de Ciencias Químicas. Instituto de Investigaciones en Físico-química de Córdoba; Argentina
Fil: Eguílaz Rubio, Marcos. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Investigaciones en Físico-química de Córdoba. Universidad Nacional de Córdoba. Facultad de Ciencias Químicas. Instituto de Investigaciones en Físico-química de Córdoba; Argentina
Fil: Marco, José F.. Consejo Superior de Investigaciones Científicas; España
Fil: Reeves-McLaren, Nik. University Of Sheffield; Reino Unido
Fil: Rivas, Gustavo Adolfo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Investigaciones en Físico-química de Córdoba. Universidad Nacional de Córdoba. Facultad de Ciencias Químicas. Instituto de Investigaciones en Físico-química de Córdoba; Argentina
Fil: Ruiz-León, Domingo. Universidad de Santiago de Chile; Chile
Fil: Bollo, Soledad. Universidad de Chile; Chile
description For the first time, the synthesis, characterization, and analytical application for hydrogen peroxide quantification of the hybrid materials of Co2TiO4 (CTO) and reduced graphene oxide (RGO) is reported, using in situ (CTO/RGO) and ex situ (CTO+RGO) preparations. This synthesis for obtaining nanostructured CTO is based on a one-step hydrothermal synthesis, with new precursors and low temperatures. The morphology, structure, and composition of the synthesized materials were examined using scanning electron microscopy, X-ray diffraction (XRD), neutron powder diffraction (NPD), and X-ray photoelectron spectroscopy (XPS). Rietveld refinements using neutron diffraction data were conducted to determine the cation distributions in CTO. Hybrid materials were also characterized by Brunauer-Emmett-Teller adsorption isotherms, Scanning Electron microscopy, and scanning electrochemical microscopy. From an analytical point of view, we evaluated the electrochemical reduction of hydrogen peroxide on glassy carbon electrodes modified with hybrid materials. The analytical detection of hydrogen peroxide using CTO/RGO showed 11 and 5 times greater sensitivity in the detection of hydrogen peroxide compared with that of pristine CTO and RGO, respectively, and a two-fold increase compared with that of the RGO+CTO modified electrode. These results demonstrate that there is a synergistic effect between CTO and RGO that is more significant when the hybrid is synthetized through in situ methodology.
publishDate 2019
dc.date.none.fl_str_mv 2019-11
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/125638
Venegas, Constanza J.; Gutierrez, Fabiana Andrea; Eguílaz Rubio, Marcos; Marco, José F.; Reeves-McLaren, Nik; et al.; Co2TiO4/reduced graphene oxide nanohybrids for electrochemical sensing applications; MDPI AG; Nanomaterials; 9; 11; 11-2019; 1-18
2079-4991
CONICET Digital
CONICET
url http://hdl.handle.net/11336/125638
identifier_str_mv Venegas, Constanza J.; Gutierrez, Fabiana Andrea; Eguílaz Rubio, Marcos; Marco, José F.; Reeves-McLaren, Nik; et al.; Co2TiO4/reduced graphene oxide nanohybrids for electrochemical sensing applications; MDPI AG; Nanomaterials; 9; 11; 11-2019; 1-18
2079-4991
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://www.mdpi.com/2079-4991/9/11/1611
info:eu-repo/semantics/altIdentifier/doi/10.3390/nano9111611
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv MDPI AG
publisher.none.fl_str_mv MDPI AG
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 12.982451

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