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
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/125638
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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 Técnicas2025-09-29T09:35:52Zoai: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:34982025-09-29 09:35:53.055CONICET 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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1844613121065353216 |
score |
13.070432 |