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Synthesis of Reduced Graphene Oxide/Titanium Dioxide Nanotubes (rGO/TNT) Composites as an Electrical Double Layer Capacitor

Composites of synthesized reduced graphene oxide (rGO) and titanium dioxide nanotubes (TNTs) were examined and combined at different mass proportions (3:1, 1:1, and 1:3) to develop an electrochemical double layer capacitor (EDLC) nanocomposite. Three different combination methods of synthesis—(1) TN...

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Autores principales: Lazarte, John Paolo L., Dipasupil, Regine Clarisse, Pasco, Gweneth Ysabelle S., Eusebio, Ramon Christian P., Orbecido, Aileen H., Doong, Ruey-an, Bautista-Patacsil, Liza
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6265885/
https://www.ncbi.nlm.nih.gov/pubmed/30424022
http://dx.doi.org/10.3390/nano8110934
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author Lazarte, John Paolo L.
Dipasupil, Regine Clarisse
Pasco, Gweneth Ysabelle S.
Eusebio, Ramon Christian P.
Orbecido, Aileen H.
Doong, Ruey-an
Bautista-Patacsil, Liza
author_facet Lazarte, John Paolo L.
Dipasupil, Regine Clarisse
Pasco, Gweneth Ysabelle S.
Eusebio, Ramon Christian P.
Orbecido, Aileen H.
Doong, Ruey-an
Bautista-Patacsil, Liza
author_sort Lazarte, John Paolo L.
collection PubMed
description Composites of synthesized reduced graphene oxide (rGO) and titanium dioxide nanotubes (TNTs) were examined and combined at different mass proportions (3:1, 1:1, and 1:3) to develop an electrochemical double layer capacitor (EDLC) nanocomposite. Three different combination methods of synthesis—(1) TNT introduction during GO reduction, (2) rGO introduction during TNT formation, and (3) TNT introduction in rGO sheets using a microwave reactor—were used to produce nanocomposites. Among the three methods, method 3 yielded an EDLC nanomaterial with a highly rectangular cyclic voltammogram and steep electrochemical impedance spectroscopy plot. The specific capacitance for method 3 nanocomposites ranged from 47.26–165.22 F/g while that for methods 1 and 2 nanocomposites only ranged from 14.03–73.62 F/g and 41.93–84.36 F/g, respectively. Furthermore, in all combinations used, the 3:1 graphene/titanium dioxide-based samples consistently yielded the highest specific capacitance. The highest among these nanocomposites is 3:1 rGO/TNT. Characterization of this highly capacitive 3:1 rGO/TNT EDLC composite revealed the dominant presence of partially amorphous rGO as seen in its XRD and SEM with branching crystalline anatase TNTs as seen in its XRD and TEM. Such property showed great potential that is desirable for applications to capacitive deionization and energy storage.
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spelling pubmed-62658852018-12-06 Synthesis of Reduced Graphene Oxide/Titanium Dioxide Nanotubes (rGO/TNT) Composites as an Electrical Double Layer Capacitor Lazarte, John Paolo L. Dipasupil, Regine Clarisse Pasco, Gweneth Ysabelle S. Eusebio, Ramon Christian P. Orbecido, Aileen H. Doong, Ruey-an Bautista-Patacsil, Liza Nanomaterials (Basel) Article Composites of synthesized reduced graphene oxide (rGO) and titanium dioxide nanotubes (TNTs) were examined and combined at different mass proportions (3:1, 1:1, and 1:3) to develop an electrochemical double layer capacitor (EDLC) nanocomposite. Three different combination methods of synthesis—(1) TNT introduction during GO reduction, (2) rGO introduction during TNT formation, and (3) TNT introduction in rGO sheets using a microwave reactor—were used to produce nanocomposites. Among the three methods, method 3 yielded an EDLC nanomaterial with a highly rectangular cyclic voltammogram and steep electrochemical impedance spectroscopy plot. The specific capacitance for method 3 nanocomposites ranged from 47.26–165.22 F/g while that for methods 1 and 2 nanocomposites only ranged from 14.03–73.62 F/g and 41.93–84.36 F/g, respectively. Furthermore, in all combinations used, the 3:1 graphene/titanium dioxide-based samples consistently yielded the highest specific capacitance. The highest among these nanocomposites is 3:1 rGO/TNT. Characterization of this highly capacitive 3:1 rGO/TNT EDLC composite revealed the dominant presence of partially amorphous rGO as seen in its XRD and SEM with branching crystalline anatase TNTs as seen in its XRD and TEM. Such property showed great potential that is desirable for applications to capacitive deionization and energy storage. MDPI 2018-11-09 /pmc/articles/PMC6265885/ /pubmed/30424022 http://dx.doi.org/10.3390/nano8110934 Text en © 2018 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
Lazarte, John Paolo L.
Dipasupil, Regine Clarisse
Pasco, Gweneth Ysabelle S.
Eusebio, Ramon Christian P.
Orbecido, Aileen H.
Doong, Ruey-an
Bautista-Patacsil, Liza
Synthesis of Reduced Graphene Oxide/Titanium Dioxide Nanotubes (rGO/TNT) Composites as an Electrical Double Layer Capacitor
title Synthesis of Reduced Graphene Oxide/Titanium Dioxide Nanotubes (rGO/TNT) Composites as an Electrical Double Layer Capacitor
title_full Synthesis of Reduced Graphene Oxide/Titanium Dioxide Nanotubes (rGO/TNT) Composites as an Electrical Double Layer Capacitor
title_fullStr Synthesis of Reduced Graphene Oxide/Titanium Dioxide Nanotubes (rGO/TNT) Composites as an Electrical Double Layer Capacitor
title_full_unstemmed Synthesis of Reduced Graphene Oxide/Titanium Dioxide Nanotubes (rGO/TNT) Composites as an Electrical Double Layer Capacitor
title_short Synthesis of Reduced Graphene Oxide/Titanium Dioxide Nanotubes (rGO/TNT) Composites as an Electrical Double Layer Capacitor
title_sort synthesis of reduced graphene oxide/titanium dioxide nanotubes (rgo/tnt) composites as an electrical double layer capacitor
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6265885/
https://www.ncbi.nlm.nih.gov/pubmed/30424022
http://dx.doi.org/10.3390/nano8110934
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