Electroactivity of graphene oxide on different substrates
Graphene oxide is known to be electroactive on carbon materials due to the reduction of various inherent oxygen functionalities on its surface. In this work, we show that the characteristic reduction peak of graphene oxide is masked when the reduction is performed on different platforms (i.e. gold o...
| Main Authors: | , |
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| Format: | Journal Article |
| Language: | English |
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2013
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| Online Access: | https://hdl.handle.net/10356/95715 http://hdl.handle.net/10220/10037 |
| _version_ | 1826112952051171328 |
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| author | Bonanni, Alessandra Pumera, Martin |
| author2 | School of Physical and Mathematical Sciences |
| author_facet | School of Physical and Mathematical Sciences Bonanni, Alessandra Pumera, Martin |
| author_sort | Bonanni, Alessandra |
| collection | NTU |
| description | Graphene oxide is known to be electroactive on carbon materials due to the reduction of various inherent oxygen functionalities on its surface. In this work, we show that the characteristic reduction peak of graphene oxide is masked when the reduction is performed on different platforms (i.e. gold or platinum) apart from the usual carbon platform. Moreover, we demonstrated that the presence of gold nanoparticles (AuNPs) on the carbon platform has a strong influence on the reduction peak of graphene oxide nanoplatelets (GONPs). The influence of AuNP sizes and concentrations on the electrochemical reduction of GONPs was assessed as well. Finally, by XPS characterization we demonstrated that even though the reduction wave was not evident on the voltammogram, the reduction still occurred on the AuNP-modified carbon surfaces. Our findings can be very useful for those who are interested in exploiting the electroactivity of graphene oxide. |
| first_indexed | 2024-10-01T03:15:33Z |
| format | Journal Article |
| id | ntu-10356/95715 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T03:15:33Z |
| publishDate | 2013 |
| record_format | dspace |
| spelling | ntu-10356/957152020-03-07T12:37:20Z Electroactivity of graphene oxide on different substrates Bonanni, Alessandra Pumera, Martin School of Physical and Mathematical Sciences DRNTU::Engineering::Materials::Metallic materials Graphene oxide is known to be electroactive on carbon materials due to the reduction of various inherent oxygen functionalities on its surface. In this work, we show that the characteristic reduction peak of graphene oxide is masked when the reduction is performed on different platforms (i.e. gold or platinum) apart from the usual carbon platform. Moreover, we demonstrated that the presence of gold nanoparticles (AuNPs) on the carbon platform has a strong influence on the reduction peak of graphene oxide nanoplatelets (GONPs). The influence of AuNP sizes and concentrations on the electrochemical reduction of GONPs was assessed as well. Finally, by XPS characterization we demonstrated that even though the reduction wave was not evident on the voltammogram, the reduction still occurred on the AuNP-modified carbon surfaces. Our findings can be very useful for those who are interested in exploiting the electroactivity of graphene oxide. 2013-06-04T01:04:28Z 2019-12-06T19:20:17Z 2013-06-04T01:04:28Z 2019-12-06T19:20:17Z 2012 2012 Journal Article Bonanni, A., & Pumera, M. (2012). Electroactivity of graphene oxide on different substrates. RCS Advances, 2(28), 10575-10578. 2046-2069 https://hdl.handle.net/10356/95715 http://hdl.handle.net/10220/10037 10.1039/C2RA22079B 173094 en RSC advances © 2012 The Royal Society of Chemistry. |
| spellingShingle | DRNTU::Engineering::Materials::Metallic materials Bonanni, Alessandra Pumera, Martin Electroactivity of graphene oxide on different substrates |
| title | Electroactivity of graphene oxide on different substrates |
| title_full | Electroactivity of graphene oxide on different substrates |
| title_fullStr | Electroactivity of graphene oxide on different substrates |
| title_full_unstemmed | Electroactivity of graphene oxide on different substrates |
| title_short | Electroactivity of graphene oxide on different substrates |
| title_sort | electroactivity of graphene oxide on different substrates |
| topic | DRNTU::Engineering::Materials::Metallic materials |
| url | https://hdl.handle.net/10356/95715 http://hdl.handle.net/10220/10037 |
| work_keys_str_mv | AT bonannialessandra electroactivityofgrapheneoxideondifferentsubstrates AT pumeramartin electroactivityofgrapheneoxideondifferentsubstrates |