Carbon nanotube nanoweb-bioelectrode for highly selective dopamine sensing |
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| Authors: | Zhao Jie Zhang Weimin Sherrell Peter Razal Joselito M Huang Xu-Feng Minett Andrew I Chen Jun |
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| Affiliation: | Intelligent Polymer Research Institute, ARC Centre of Excellence for Electromaterials Science, Australian Institute of Innovative Materials, Innovation Campus, IHMRI, School of Health Sciences, University of Wollongong, NSW 2522, Australia. |
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| Abstract: | A highly sensitive and selective dopamine sensor was fabricated with the unique 3D carbon nanotube nanoweb (CNT-N) electrode. The as-synthesised CNT-N was modified by oxygen plasma to graft functional groups in order to increase selective electroactive sites at the CNT sidewalls. This electrode was characterized physically and electrochemically using HRSEM, Raman, FT-IR, and cyclic voltammetry (CV). Our investigations indicated that the O(2)-plasma treated CNT-N electrode could serve as a highly sensitive biosensor for the selective sensing of dopamine (DA, 1 μM to 20 μM) in the presence of ascorbic acid (AA, 1000 μM). |
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