A Glassy Carbon Electrode Modified With Sno2 Nanofibers, Polyaniline and Hemoglobin for Improved Amperometric Sensing of Hydrogen Peroxide
The authors describe a glassy carbon electrode (GCE) modified with a multiporous nanofibers prepared from SnO2, polyaniline and hemoglobin, and its application to the amperometric determination of hydrogen peroxide (H2O2). The SnO2 nanofibers were prepared first and then polymerized with polyaniline...
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| Format: | Article |
| Language: | English |
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Springer Vienna
2017
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| Online Access: | http://umpir.ump.edu.my/id/eprint/18574/1/fist-2017-kafi-A%20Glassy%20Carbon%20Electrode%20Modified%20With%20Sno21.pdf |
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| author | A. K. M., Kafi Wali, Qamar Rajan, Jose Biswas, Tapan Kumar M. M., Yusoff |
| author_facet | A. K. M., Kafi Wali, Qamar Rajan, Jose Biswas, Tapan Kumar M. M., Yusoff |
| author_sort | A. K. M., Kafi |
| collection | UMP |
| description | The authors describe a glassy carbon electrode (GCE) modified with a multiporous nanofibers prepared from SnO2, polyaniline and hemoglobin, and its application to the amperometric determination of hydrogen peroxide (H2O2). The SnO2 nanofibers were prepared first and then polymerized with polyaniline. Then, the redox protein hemoglobin was co-immobilized with the nanofibers on the surface of the GCE. Chitosan was finally used to improve the stability of the modified GCE. Direct electrochemistry of Hemoglobin at the modified electrode revealed a pair of well-defined redox peaks, with anodic and cathodic peaks at −0.15 and −0.3 V, respectively. The modified GCE exhibits high catalytic response to hydrogen peroxide. Best operated at −0.4 V (vs Ag/AgCl), it displays a linear amperometric response that covers the 2 to 160 μM H2O2 concentration range, with a lower detection limit of 0.5 μM. The biosensor has good storage stability, reproducibility and repeatability. |
| first_indexed | 2024-03-06T12:17:55Z |
| format | Article |
| id | UMPir18574 |
| institution | Universiti Malaysia Pahang |
| language | English |
| last_indexed | 2024-03-06T12:17:55Z |
| publishDate | 2017 |
| publisher | Springer Vienna |
| record_format | dspace |
| spelling | UMPir185742018-07-26T02:40:22Z http://umpir.ump.edu.my/id/eprint/18574/ A Glassy Carbon Electrode Modified With Sno2 Nanofibers, Polyaniline and Hemoglobin for Improved Amperometric Sensing of Hydrogen Peroxide A. K. M., Kafi Wali, Qamar Rajan, Jose Biswas, Tapan Kumar M. M., Yusoff QD Chemistry The authors describe a glassy carbon electrode (GCE) modified with a multiporous nanofibers prepared from SnO2, polyaniline and hemoglobin, and its application to the amperometric determination of hydrogen peroxide (H2O2). The SnO2 nanofibers were prepared first and then polymerized with polyaniline. Then, the redox protein hemoglobin was co-immobilized with the nanofibers on the surface of the GCE. Chitosan was finally used to improve the stability of the modified GCE. Direct electrochemistry of Hemoglobin at the modified electrode revealed a pair of well-defined redox peaks, with anodic and cathodic peaks at −0.15 and −0.3 V, respectively. The modified GCE exhibits high catalytic response to hydrogen peroxide. Best operated at −0.4 V (vs Ag/AgCl), it displays a linear amperometric response that covers the 2 to 160 μM H2O2 concentration range, with a lower detection limit of 0.5 μM. The biosensor has good storage stability, reproducibility and repeatability. Springer Vienna 2017-11-01 Article PeerReviewed application/pdf en http://umpir.ump.edu.my/id/eprint/18574/1/fist-2017-kafi-A%20Glassy%20Carbon%20Electrode%20Modified%20With%20Sno21.pdf A. K. M., Kafi and Wali, Qamar and Rajan, Jose and Biswas, Tapan Kumar and M. M., Yusoff (2017) A Glassy Carbon Electrode Modified With Sno2 Nanofibers, Polyaniline and Hemoglobin for Improved Amperometric Sensing of Hydrogen Peroxide. Microchimica Acta, 184 (11). pp. 4443-4450. ISSN 0026-3672. (Published) http://dx.doi.org/10.1007/s00604-017-2479-6 doi:10.1007/s00604-017-2479-6 |
| spellingShingle | QD Chemistry A. K. M., Kafi Wali, Qamar Rajan, Jose Biswas, Tapan Kumar M. M., Yusoff A Glassy Carbon Electrode Modified With Sno2 Nanofibers, Polyaniline and Hemoglobin for Improved Amperometric Sensing of Hydrogen Peroxide |
| title | A Glassy Carbon Electrode Modified With Sno2 Nanofibers, Polyaniline and Hemoglobin for Improved Amperometric Sensing of Hydrogen Peroxide |
| title_full | A Glassy Carbon Electrode Modified With Sno2 Nanofibers, Polyaniline and Hemoglobin for Improved Amperometric Sensing of Hydrogen Peroxide |
| title_fullStr | A Glassy Carbon Electrode Modified With Sno2 Nanofibers, Polyaniline and Hemoglobin for Improved Amperometric Sensing of Hydrogen Peroxide |
| title_full_unstemmed | A Glassy Carbon Electrode Modified With Sno2 Nanofibers, Polyaniline and Hemoglobin for Improved Amperometric Sensing of Hydrogen Peroxide |
| title_short | A Glassy Carbon Electrode Modified With Sno2 Nanofibers, Polyaniline and Hemoglobin for Improved Amperometric Sensing of Hydrogen Peroxide |
| title_sort | glassy carbon electrode modified with sno2 nanofibers polyaniline and hemoglobin for improved amperometric sensing of hydrogen peroxide |
| topic | QD Chemistry |
| url | http://umpir.ump.edu.my/id/eprint/18574/1/fist-2017-kafi-A%20Glassy%20Carbon%20Electrode%20Modified%20With%20Sno21.pdf |
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