Electrochemical determination of serotonin in urine samples based on metal oxide nanoparticles/MWCNT on modified glassy carbon electrode
journal of Sensing and Bio-Sensing Research, vol. 13, 17-27P.
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Published by Elsevier B.V
2020
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| Accés en línia: | https://ir.oauife.edu.ng/handle/123456789/5095 |
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| author | Fayemi, Omolola E. Adekunle, Abolanle S. Ebenso, Eno E. |
| author_facet | Fayemi, Omolola E. Adekunle, Abolanle S. Ebenso, Eno E. |
| author_sort | Fayemi, Omolola E. |
| collection | DSpace |
| description | journal of Sensing and Bio-Sensing Research, vol. 13, 17-27P. |
| format | Journal |
| id | oai:ir.oauife.edu.ng:123456789-5095 |
| institution | My University |
| language | English |
| publishDate | 2020 |
| publisher | Published by Elsevier B.V |
| record_format | dspace |
| spelling | oai:ir.oauife.edu.ng:123456789-50952023-05-13T11:10:20Z Electrochemical determination of serotonin in urine samples based on metal oxide nanoparticles/MWCNT on modified glassy carbon electrode Fayemi, Omolola E. Adekunle, Abolanle S. Ebenso, Eno E. Metal oxides nanoparticles Multiwalled carbon nanotubes Glassy carbon electrode Serotonin Cyclic voltammetry Square wave voltammetry journal of Sensing and Bio-Sensing Research, vol. 13, 17-27P. The electrochemical response of serotonin on the modified electrode based on multiwalled-carbon-nanotube (MWCNT) doped respectively with nickel, zinc and iron oxide nanoparticles coating on glassy carbon electrode (GCE) at physiological pH 7 was determined using cyclic voltammetry (CV) and square wave voltammetry (SWV). The modified GCE/MWCNT-metal oxide electrodes exhibited excellent electrocatalytic activity towards the detection of serotonin at large peak current and lower oxidation potentials compared to other electrodes in- vestigated. The dynamic range for the serotonin determinationwas between 5.98 × 10 −3 μM to 62.8 μMwithde- tection limits 118, 129 and 166 nM for GCE/MWCNT-NiO, GCE/MWCNT-ZnO and GCE/MWCNT-Fe 3 O 4 sensors respectively. GCE-MWCNT-NiO was the bestelectrode in terms of serotonin currentresponse, electrode stability, resistance to fouling and limit of detection towards the analyte.The developed sensors were found to be electro- chemicallystable, reusable, economically effective due to theirextremely low operational cost, and have demon- strated good limit of detection, sensitivity and selectivity towards serotonin determination in urine samples. © 2017 Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http:// creativecommons.org/licenses/by-nc-nd/4.0/). 2020-01-20T13:38:30Z 2020-01-20T13:38:30Z 2017-01-11 Journal doi.org/10.1016/j.sbsr.2017.01.005 2214 https://ir.oauife.edu.ng/handle/123456789/5095 en application/pdf Published by Elsevier B.V |
| spellingShingle | Metal oxides nanoparticles Multiwalled carbon nanotubes Glassy carbon electrode Serotonin Cyclic voltammetry Square wave voltammetry Fayemi, Omolola E. Adekunle, Abolanle S. Ebenso, Eno E. Electrochemical determination of serotonin in urine samples based on metal oxide nanoparticles/MWCNT on modified glassy carbon electrode |
| title | Electrochemical determination of serotonin in urine samples based on metal oxide nanoparticles/MWCNT on modified glassy carbon electrode |
| title_full | Electrochemical determination of serotonin in urine samples based on metal oxide nanoparticles/MWCNT on modified glassy carbon electrode |
| title_fullStr | Electrochemical determination of serotonin in urine samples based on metal oxide nanoparticles/MWCNT on modified glassy carbon electrode |
| title_full_unstemmed | Electrochemical determination of serotonin in urine samples based on metal oxide nanoparticles/MWCNT on modified glassy carbon electrode |
| title_short | Electrochemical determination of serotonin in urine samples based on metal oxide nanoparticles/MWCNT on modified glassy carbon electrode |
| title_sort | electrochemical determination of serotonin in urine samples based on metal oxide nanoparticles mwcnt on modified glassy carbon electrode |
| topic | Metal oxides nanoparticles Multiwalled carbon nanotubes Glassy carbon electrode Serotonin Cyclic voltammetry Square wave voltammetry |
| url | https://ir.oauife.edu.ng/handle/123456789/5095 |
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