Graphene oxide reduction by standard industrial reducing agent : thiourea dioxide
The current fabrication methods of pristine graphene are not feasible for bulk production. The closest approach, which is through chemical reduction of graphene oxide to chemically reduced graphene oxide that resembles pristine graphene, has been widely adopted instead. Herein, we report a new metho...
| Main Authors: | , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2013
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/96600 http://hdl.handle.net/10220/11589 |
| _version_ | 1826121299747930112 |
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| author | Chua, Chun Kiang Ambrosi, Adriano Pumera, Martin |
| author2 | School of Physical and Mathematical Sciences |
| author_facet | School of Physical and Mathematical Sciences Chua, Chun Kiang Ambrosi, Adriano Pumera, Martin |
| author_sort | Chua, Chun Kiang |
| collection | NTU |
| description | The current fabrication methods of pristine graphene are not feasible for bulk production. The closest approach, which is through chemical reduction of graphene oxide to chemically reduced graphene oxide that resembles pristine graphene, has been widely adopted instead. Herein, we report a new methodology for the reduction of graphene oxide to chemically reduced graphene oxide using a common industrial reductant, thiourea dioxide. The final product has been fully characterized by X-ray photoelectron spectroscopy (XPS), transmission electron microscopy (TEM), scanning electron microscopy (SEM), Raman spectroscopy, electrochemical impedance spectroscopy (EIS), attenuated total reflectance Fourier transform infrared spectroscopy (ATR-FTIR) and cyclic voltammetry. The microscopy techniques revealed reduced graphene of few-layered sheets. Based on the XPS analyses, a C/O ratio as high as 16.0 was achieved. The reduced graphene oxide product demonstrated a good electrochemical performance with a charge transfer resistance as low as 0.11 kΩ based on EIS measurements and a low overpotential for the oxidation of ascorbic acid. Since thiourea is a common industrial reductant, standard protocols are already in place for the waste produced from this methodology. As such, we foresee that this methodology holds the potential for industrial scale reduction of graphene oxide. |
| first_indexed | 2024-10-01T05:30:24Z |
| format | Journal Article |
| id | ntu-10356/96600 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T05:30:24Z |
| publishDate | 2013 |
| record_format | dspace |
| spelling | ntu-10356/966002020-03-07T12:34:43Z Graphene oxide reduction by standard industrial reducing agent : thiourea dioxide Chua, Chun Kiang Ambrosi, Adriano Pumera, Martin School of Physical and Mathematical Sciences DRNTU::Science::Chemistry The current fabrication methods of pristine graphene are not feasible for bulk production. The closest approach, which is through chemical reduction of graphene oxide to chemically reduced graphene oxide that resembles pristine graphene, has been widely adopted instead. Herein, we report a new methodology for the reduction of graphene oxide to chemically reduced graphene oxide using a common industrial reductant, thiourea dioxide. The final product has been fully characterized by X-ray photoelectron spectroscopy (XPS), transmission electron microscopy (TEM), scanning electron microscopy (SEM), Raman spectroscopy, electrochemical impedance spectroscopy (EIS), attenuated total reflectance Fourier transform infrared spectroscopy (ATR-FTIR) and cyclic voltammetry. The microscopy techniques revealed reduced graphene of few-layered sheets. Based on the XPS analyses, a C/O ratio as high as 16.0 was achieved. The reduced graphene oxide product demonstrated a good electrochemical performance with a charge transfer resistance as low as 0.11 kΩ based on EIS measurements and a low overpotential for the oxidation of ascorbic acid. Since thiourea is a common industrial reductant, standard protocols are already in place for the waste produced from this methodology. As such, we foresee that this methodology holds the potential for industrial scale reduction of graphene oxide. 2013-07-16T07:22:37Z 2019-12-06T19:32:54Z 2013-07-16T07:22:37Z 2019-12-06T19:32:54Z 2012 2012 Journal Article Chua, C. K., Ambrosi, A., & Pumera, M. (2012). Graphene oxide reduction by standard industrial reducing agent: thiourea dioxide. Journal of Materials Chemistry, 22(22), 11054-11061. https://hdl.handle.net/10356/96600 http://hdl.handle.net/10220/11589 10.1039/c2jm16054d en Journal of materials chemistry © 2012 The Royal Society of Chemistry. |
| spellingShingle | DRNTU::Science::Chemistry Chua, Chun Kiang Ambrosi, Adriano Pumera, Martin Graphene oxide reduction by standard industrial reducing agent : thiourea dioxide |
| title | Graphene oxide reduction by standard industrial reducing agent : thiourea dioxide |
| title_full | Graphene oxide reduction by standard industrial reducing agent : thiourea dioxide |
| title_fullStr | Graphene oxide reduction by standard industrial reducing agent : thiourea dioxide |
| title_full_unstemmed | Graphene oxide reduction by standard industrial reducing agent : thiourea dioxide |
| title_short | Graphene oxide reduction by standard industrial reducing agent : thiourea dioxide |
| title_sort | graphene oxide reduction by standard industrial reducing agent thiourea dioxide |
| topic | DRNTU::Science::Chemistry |
| url | https://hdl.handle.net/10356/96600 http://hdl.handle.net/10220/11589 |
| work_keys_str_mv | AT chuachunkiang grapheneoxidereductionbystandardindustrialreducingagentthioureadioxide AT ambrosiadriano grapheneoxidereductionbystandardindustrialreducingagentthioureadioxide AT pumeramartin grapheneoxidereductionbystandardindustrialreducingagentthioureadioxide |