Electrochemical reduction of graphene oxide and its in situ spectroelectrochemical characterization
The electrochemical properties of self-assembled films of graphene oxide (GO) on mercaptoethylamine (MEA) modified rough Au-surfaces were studied. The film deposition process on MEA primed gold was followed by surface plasmon resonance measurements and the film morphology on 3-aminopropyltriethoxysi...
| Main Authors: | , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2013
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| Online Access: | https://hdl.handle.net/10356/100868 http://hdl.handle.net/10220/11046 |
| _version_ | 1826117665964425216 |
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| author | Kauppila, Jussi Kvarnström, Carita Viinikanoja, Antti Wang, Zhijuan |
| author2 | School of Materials Science & Engineering |
| author_facet | School of Materials Science & Engineering Kauppila, Jussi Kvarnström, Carita Viinikanoja, Antti Wang, Zhijuan |
| author_sort | Kauppila, Jussi |
| collection | NTU |
| description | The electrochemical properties of self-assembled films of graphene oxide (GO) on mercaptoethylamine (MEA) modified rough Au-surfaces were studied. The film deposition process on MEA primed gold was followed by surface plasmon resonance measurements and the film morphology on 3-aminopropyltriethoxysilane primed Si(100)-surface was studied by atomic force microscopy. The deposited few layer thick GO films on gold were electrochemically reduced by cyclic voltammetry simultaneously as the structural changes in the film were recorded by in situ vibrational spectroscopies. In situ surface enhanced infrared spectroscopy results indicate that the effect of the applied potential on the GO structure could be divided into two parts where the changes occurring at moderate negative potentials are mainly related to changes in the double layer at the film–electrolyte interface and to hydrogen bonding of intercalated water between the GO sheets. At potentials more negative than −0.8 V vs. Ag/AgCl the reduction of GO starts to take place with concomitant conversion of the different functional groups of the film. |
| first_indexed | 2024-10-01T04:31:02Z |
| format | Journal Article |
| id | ntu-10356/100868 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T04:31:02Z |
| publishDate | 2013 |
| record_format | dspace |
| spelling | ntu-10356/1008682020-06-01T10:01:56Z Electrochemical reduction of graphene oxide and its in situ spectroelectrochemical characterization Kauppila, Jussi Kvarnström, Carita Viinikanoja, Antti Wang, Zhijuan School of Materials Science & Engineering The electrochemical properties of self-assembled films of graphene oxide (GO) on mercaptoethylamine (MEA) modified rough Au-surfaces were studied. The film deposition process on MEA primed gold was followed by surface plasmon resonance measurements and the film morphology on 3-aminopropyltriethoxysilane primed Si(100)-surface was studied by atomic force microscopy. The deposited few layer thick GO films on gold were electrochemically reduced by cyclic voltammetry simultaneously as the structural changes in the film were recorded by in situ vibrational spectroscopies. In situ surface enhanced infrared spectroscopy results indicate that the effect of the applied potential on the GO structure could be divided into two parts where the changes occurring at moderate negative potentials are mainly related to changes in the double layer at the film–electrolyte interface and to hydrogen bonding of intercalated water between the GO sheets. At potentials more negative than −0.8 V vs. Ag/AgCl the reduction of GO starts to take place with concomitant conversion of the different functional groups of the film. 2013-07-09T03:16:47Z 2019-12-06T20:29:31Z 2013-07-09T03:16:47Z 2019-12-06T20:29:31Z 2012 2012 Journal Article 1463-9076 https://hdl.handle.net/10356/100868 http://hdl.handle.net/10220/11046 10.1039/C2CP42253K en Physical chemistry chemical physics © 2012 The Owner Societies. |
| spellingShingle | Kauppila, Jussi Kvarnström, Carita Viinikanoja, Antti Wang, Zhijuan Electrochemical reduction of graphene oxide and its in situ spectroelectrochemical characterization |
| title | Electrochemical reduction of graphene oxide and its in situ spectroelectrochemical characterization |
| title_full | Electrochemical reduction of graphene oxide and its in situ spectroelectrochemical characterization |
| title_fullStr | Electrochemical reduction of graphene oxide and its in situ spectroelectrochemical characterization |
| title_full_unstemmed | Electrochemical reduction of graphene oxide and its in situ spectroelectrochemical characterization |
| title_short | Electrochemical reduction of graphene oxide and its in situ spectroelectrochemical characterization |
| title_sort | electrochemical reduction of graphene oxide and its in situ spectroelectrochemical characterization |
| url | https://hdl.handle.net/10356/100868 http://hdl.handle.net/10220/11046 |
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