Electrochemical Sensing of Nitric Oxide on Electrochemically Reduced Graphene-Modified Electrode
Graphene-modified electrode was prepared through electrochemically reducing graphene oxide on the surface of a glassy carbon electrode in PBS solution. The as-prepared electrode owns higher stability and stronger catalytic activity towards the oxidation of nitric oxide (NO). At the electrode, an oxi...
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| Format: | Article |
| Language: | English |
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Wiley
2011-01-01
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| Series: | International Journal of Electrochemistry |
| Online Access: | http://dx.doi.org/10.4061/2011/482780 |
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| author | Yu-Li Wang Guang-Chao Zhao |
| author_facet | Yu-Li Wang Guang-Chao Zhao |
| author_sort | Yu-Li Wang |
| collection | DOAJ |
| description | Graphene-modified electrode was prepared through electrochemically reducing graphene oxide on the surface of a glassy carbon electrode in PBS solution. The as-prepared electrode owns higher stability and stronger catalytic activity towards the oxidation of nitric oxide (NO). At the electrode, an oxidation peak of NO can be observed at about 1.05 V (versus Ag/AgCl), and the electrode reaction of NO is controlled by diffusion process. Under the optimum conditions, the peak currents are dependent linearly on NO concentrations in the range from 7.2×10−7 to 7.84×10−5 M with a limit of detection of 2.0×10−7 M. The response time of the as-prepared electrode to NO is less than 3 s, and the sensitivity is about 299.1 μA/mM, revealing that the electrode can be used as an excellent sensor for the determination of NO. With further modification of Nafion, the determination is free from the interference of nitrite and some other biological substances. This investigation provides an alternate way for the determination of NO. |
| format | Article |
| id | doaj-art-c2e5fd8bc2f5460e99e31ce5d4eac0e3 |
| institution | OA Journals |
| issn | 2090-3537 |
| language | English |
| publishDate | 2011-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Electrochemistry |
| spelling | doaj-art-c2e5fd8bc2f5460e99e31ce5d4eac0e32025-08-20T02:19:02ZengWileyInternational Journal of Electrochemistry2090-35372011-01-01201110.4061/2011/482780482780Electrochemical Sensing of Nitric Oxide on Electrochemically Reduced Graphene-Modified ElectrodeYu-Li Wang0Guang-Chao Zhao1School of Chemistry and Materials Science, Anhui Normal University, Wuhu 241000, ChinaSchool of Chemistry and Materials Science, Anhui Normal University, Wuhu 241000, ChinaGraphene-modified electrode was prepared through electrochemically reducing graphene oxide on the surface of a glassy carbon electrode in PBS solution. The as-prepared electrode owns higher stability and stronger catalytic activity towards the oxidation of nitric oxide (NO). At the electrode, an oxidation peak of NO can be observed at about 1.05 V (versus Ag/AgCl), and the electrode reaction of NO is controlled by diffusion process. Under the optimum conditions, the peak currents are dependent linearly on NO concentrations in the range from 7.2×10−7 to 7.84×10−5 M with a limit of detection of 2.0×10−7 M. The response time of the as-prepared electrode to NO is less than 3 s, and the sensitivity is about 299.1 μA/mM, revealing that the electrode can be used as an excellent sensor for the determination of NO. With further modification of Nafion, the determination is free from the interference of nitrite and some other biological substances. This investigation provides an alternate way for the determination of NO.http://dx.doi.org/10.4061/2011/482780 |
| spellingShingle | Yu-Li Wang Guang-Chao Zhao Electrochemical Sensing of Nitric Oxide on Electrochemically Reduced Graphene-Modified Electrode International Journal of Electrochemistry |
| title | Electrochemical Sensing of Nitric Oxide on Electrochemically Reduced Graphene-Modified Electrode |
| title_full | Electrochemical Sensing of Nitric Oxide on Electrochemically Reduced Graphene-Modified Electrode |
| title_fullStr | Electrochemical Sensing of Nitric Oxide on Electrochemically Reduced Graphene-Modified Electrode |
| title_full_unstemmed | Electrochemical Sensing of Nitric Oxide on Electrochemically Reduced Graphene-Modified Electrode |
| title_short | Electrochemical Sensing of Nitric Oxide on Electrochemically Reduced Graphene-Modified Electrode |
| title_sort | electrochemical sensing of nitric oxide on electrochemically reduced graphene modified electrode |
| url | http://dx.doi.org/10.4061/2011/482780 |
| work_keys_str_mv | AT yuliwang electrochemicalsensingofnitricoxideonelectrochemicallyreducedgraphenemodifiedelectrode AT guangchaozhao electrochemicalsensingofnitricoxideonelectrochemicallyreducedgraphenemodifiedelectrode |