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Co(2)TiO(4)/Reduced Graphene Oxide Nanohybrids for Electrochemical Sensing Applications
For the first time, the synthesis, characterization, and analytical application for hydrogen peroxide quantification of the hybrid materials of Co(2)TiO(4) (CTO) and reduced graphene oxide (RGO) is reported, using in situ (CTO/RGO) and ex situ (CTO+RGO) preparations. This synthesis for obtaining nan...
Autores principales: | , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2019
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6915725/ https://www.ncbi.nlm.nih.gov/pubmed/31766234 http://dx.doi.org/10.3390/nano9111611 |
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author | Venegas, Constanza J. Gutierrez, Fabiana A. Eguílaz, Marcos Marco, José F. Reeves-McLaren, Nik Rivas, Gustavo A. Ruiz-León, Domingo Bollo, Soledad |
author_facet | Venegas, Constanza J. Gutierrez, Fabiana A. Eguílaz, Marcos Marco, José F. Reeves-McLaren, Nik Rivas, Gustavo A. Ruiz-León, Domingo Bollo, Soledad |
author_sort | Venegas, Constanza J. |
collection | PubMed |
description | For the first time, the synthesis, characterization, and analytical application for hydrogen peroxide quantification of the hybrid materials of Co(2)TiO(4) (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. |
format | Online Article Text |
id | pubmed-6915725 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2019 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-69157252019-12-24 Co(2)TiO(4)/Reduced Graphene Oxide Nanohybrids for Electrochemical Sensing Applications Venegas, Constanza J. Gutierrez, Fabiana A. Eguílaz, Marcos Marco, José F. Reeves-McLaren, Nik Rivas, Gustavo A. Ruiz-León, Domingo Bollo, Soledad Nanomaterials (Basel) Article For the first time, the synthesis, characterization, and analytical application for hydrogen peroxide quantification of the hybrid materials of Co(2)TiO(4) (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. MDPI 2019-11-13 /pmc/articles/PMC6915725/ /pubmed/31766234 http://dx.doi.org/10.3390/nano9111611 Text en © 2019 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Venegas, Constanza J. Gutierrez, Fabiana A. Eguílaz, Marcos Marco, José F. Reeves-McLaren, Nik Rivas, Gustavo A. Ruiz-León, Domingo Bollo, Soledad Co(2)TiO(4)/Reduced Graphene Oxide Nanohybrids for Electrochemical Sensing Applications |
title | Co(2)TiO(4)/Reduced Graphene Oxide Nanohybrids for Electrochemical Sensing Applications |
title_full | Co(2)TiO(4)/Reduced Graphene Oxide Nanohybrids for Electrochemical Sensing Applications |
title_fullStr | Co(2)TiO(4)/Reduced Graphene Oxide Nanohybrids for Electrochemical Sensing Applications |
title_full_unstemmed | Co(2)TiO(4)/Reduced Graphene Oxide Nanohybrids for Electrochemical Sensing Applications |
title_short | Co(2)TiO(4)/Reduced Graphene Oxide Nanohybrids for Electrochemical Sensing Applications |
title_sort | co(2)tio(4)/reduced graphene oxide nanohybrids for electrochemical sensing applications |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6915725/ https://www.ncbi.nlm.nih.gov/pubmed/31766234 http://dx.doi.org/10.3390/nano9111611 |
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