Cargando…
A Facile Method for Batch Preparation of Electrochemically Reduced Graphene Oxide
The electrochemical reduction of graphene oxide (GO) is an environmentally friendly and energy-saving method for improving the characteristics of GO. However, GO films must be coated on the cathode electrode in advance when usingthis technique. Thus, the formed electrochemically reduced GO (ERGO) fi...
Autores principales: | , , , |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2019
|
Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6473953/ https://www.ncbi.nlm.nih.gov/pubmed/30841616 http://dx.doi.org/10.3390/nano9030376 |
_version_ | 1783412544000491520 |
---|---|
author | Hung, Yi-Fang Cheng, Chia Huang, Chun-Kai Yang, Chii-Rong |
author_facet | Hung, Yi-Fang Cheng, Chia Huang, Chun-Kai Yang, Chii-Rong |
author_sort | Hung, Yi-Fang |
collection | PubMed |
description | The electrochemical reduction of graphene oxide (GO) is an environmentally friendly and energy-saving method for improving the characteristics of GO. However, GO films must be coated on the cathode electrode in advance when usingthis technique. Thus, the formed electrochemically reduced GO (ERGO) films can be used only as sensing or conductive materials in devices because mass production of the flakes is not possible. Therefore, this study proposes a facile electrochemical reduction technique. In this technique, GO flakes can be directly used as reduced materials, and no GO films are required in advance. A 0.1 M phosphate buffered saline solution was used as the electrolyte, which is a highly safe chemical agent. Experimental results revealed that the as-prepared GO flakes were electrochemically reduced to form ERGO flakes by using a −10 V bias for 8 h. The ratio of the D-band and G-band feature peaks was increased from 0.86 to 1.12, as revealed by Raman spectroscopy, the π-π stacking interaction operating between the ERGO and GO has been revealed by UV-Vis absorption spectroscopy, and the C–O ratio was increased from 2.02 to 2.56, as indicated by X-ray photoelectron spectroscopy. The electrical conductivity of the ERGO film (3.83 × 10(−1) S·cm(−1)) was considerably better than that of the GO film (7.92 × 10(−4) S·cm(−1)). These results demonstrate that the proposed electrochemical reduction technique can provide high-quality ERGO flakes and that it has potential for large-scale production. |
format | Online Article Text |
id | pubmed-6473953 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2019 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-64739532019-05-03 A Facile Method for Batch Preparation of Electrochemically Reduced Graphene Oxide Hung, Yi-Fang Cheng, Chia Huang, Chun-Kai Yang, Chii-Rong Nanomaterials (Basel) Article The electrochemical reduction of graphene oxide (GO) is an environmentally friendly and energy-saving method for improving the characteristics of GO. However, GO films must be coated on the cathode electrode in advance when usingthis technique. Thus, the formed electrochemically reduced GO (ERGO) films can be used only as sensing or conductive materials in devices because mass production of the flakes is not possible. Therefore, this study proposes a facile electrochemical reduction technique. In this technique, GO flakes can be directly used as reduced materials, and no GO films are required in advance. A 0.1 M phosphate buffered saline solution was used as the electrolyte, which is a highly safe chemical agent. Experimental results revealed that the as-prepared GO flakes were electrochemically reduced to form ERGO flakes by using a −10 V bias for 8 h. The ratio of the D-band and G-band feature peaks was increased from 0.86 to 1.12, as revealed by Raman spectroscopy, the π-π stacking interaction operating between the ERGO and GO has been revealed by UV-Vis absorption spectroscopy, and the C–O ratio was increased from 2.02 to 2.56, as indicated by X-ray photoelectron spectroscopy. The electrical conductivity of the ERGO film (3.83 × 10(−1) S·cm(−1)) was considerably better than that of the GO film (7.92 × 10(−4) S·cm(−1)). These results demonstrate that the proposed electrochemical reduction technique can provide high-quality ERGO flakes and that it has potential for large-scale production. MDPI 2019-03-05 /pmc/articles/PMC6473953/ /pubmed/30841616 http://dx.doi.org/10.3390/nano9030376 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 Hung, Yi-Fang Cheng, Chia Huang, Chun-Kai Yang, Chii-Rong A Facile Method for Batch Preparation of Electrochemically Reduced Graphene Oxide |
title | A Facile Method for Batch Preparation of Electrochemically Reduced Graphene Oxide |
title_full | A Facile Method for Batch Preparation of Electrochemically Reduced Graphene Oxide |
title_fullStr | A Facile Method for Batch Preparation of Electrochemically Reduced Graphene Oxide |
title_full_unstemmed | A Facile Method for Batch Preparation of Electrochemically Reduced Graphene Oxide |
title_short | A Facile Method for Batch Preparation of Electrochemically Reduced Graphene Oxide |
title_sort | facile method for batch preparation of electrochemically reduced graphene oxide |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6473953/ https://www.ncbi.nlm.nih.gov/pubmed/30841616 http://dx.doi.org/10.3390/nano9030376 |
work_keys_str_mv | AT hungyifang afacilemethodforbatchpreparationofelectrochemicallyreducedgrapheneoxide AT chengchia afacilemethodforbatchpreparationofelectrochemicallyreducedgrapheneoxide AT huangchunkai afacilemethodforbatchpreparationofelectrochemicallyreducedgrapheneoxide AT yangchiirong afacilemethodforbatchpreparationofelectrochemicallyreducedgrapheneoxide AT hungyifang facilemethodforbatchpreparationofelectrochemicallyreducedgrapheneoxide AT chengchia facilemethodforbatchpreparationofelectrochemicallyreducedgrapheneoxide AT huangchunkai facilemethodforbatchpreparationofelectrochemicallyreducedgrapheneoxide AT yangchiirong facilemethodforbatchpreparationofelectrochemicallyreducedgrapheneoxide |