Simultaneous electrochemical determination of dopamine, uric acid and ascorbic acid using palladium nanoparticle-loaded carbon nanofibers modified electrode
Palladium nanoparticle-loaded carbon nanofibers (Pd/CNFs) were prepared by electrospinning and subsequent thermal treatment processes. Pd/CNFs modified carbon paste electrode (Pd/CNF-CPE) displayed excellent electrochemical catalytic activities towards dopamine (DA), uric acid (UA) and ascorbic acid...
| Main Authors: | , , , |
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| Format: | Journal Article |
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Elsevier BV
2008
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| Online Access: | http://hdl.handle.net/20.500.11937/8194 |
| _version_ | 1848745583818309632 |
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| author | Huang, J. Liu, Yang Hou, H. You, T. |
| author_facet | Huang, J. Liu, Yang Hou, H. You, T. |
| author_sort | Huang, J. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | Palladium nanoparticle-loaded carbon nanofibers (Pd/CNFs) were prepared by electrospinning and subsequent thermal treatment processes. Pd/CNFs modified carbon paste electrode (Pd/CNF-CPE) displayed excellent electrochemical catalytic activities towards dopamine (DA), uric acid (UA) and ascorbic acid (AA). The oxidation overpotentials of DA, UA and AA were decreased significantly compared with those obtained at the bare CPE. Differential pulse voltammetry was used for the simultaneous determination of DA, UA and AA in their ternary mixture. The peak separation between UA and DA, DA and AA was 148 mV and 244 mV, respectively. The calibration curves for DA, UA and AA were obtained in the range of 0.5–160 μM, 2–200 μM, and 0.05–4 mM, respectively. The lowest detection limits (S/N = 3) were 0.2 μM, 0.7 μM and 15 μM for DA, UA and AA, respectively. With good selectively and sensitivity, the present method was applied to the determination of DA in injectable medicine and UA in urine sample. |
| first_indexed | 2025-11-14T06:19:40Z |
| format | Journal Article |
| id | curtin-20.500.11937-8194 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T06:19:40Z |
| publishDate | 2008 |
| publisher | Elsevier BV |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-81942017-09-13T14:34:29Z Simultaneous electrochemical determination of dopamine, uric acid and ascorbic acid using palladium nanoparticle-loaded carbon nanofibers modified electrode Huang, J. Liu, Yang Hou, H. You, T. Simultaneous determination Dopamine Electrospinning Pd nanoparticle-loaded carbon nanofiber Ascorbic acid Uric acid Palladium nanoparticle-loaded carbon nanofibers (Pd/CNFs) were prepared by electrospinning and subsequent thermal treatment processes. Pd/CNFs modified carbon paste electrode (Pd/CNF-CPE) displayed excellent electrochemical catalytic activities towards dopamine (DA), uric acid (UA) and ascorbic acid (AA). The oxidation overpotentials of DA, UA and AA were decreased significantly compared with those obtained at the bare CPE. Differential pulse voltammetry was used for the simultaneous determination of DA, UA and AA in their ternary mixture. The peak separation between UA and DA, DA and AA was 148 mV and 244 mV, respectively. The calibration curves for DA, UA and AA were obtained in the range of 0.5–160 μM, 2–200 μM, and 0.05–4 mM, respectively. The lowest detection limits (S/N = 3) were 0.2 μM, 0.7 μM and 15 μM for DA, UA and AA, respectively. With good selectively and sensitivity, the present method was applied to the determination of DA in injectable medicine and UA in urine sample. 2008 Journal Article http://hdl.handle.net/20.500.11937/8194 10.1016/j.bios.2008.06.011 Elsevier BV restricted |
| spellingShingle | Simultaneous determination Dopamine Electrospinning Pd nanoparticle-loaded carbon nanofiber Ascorbic acid Uric acid Huang, J. Liu, Yang Hou, H. You, T. Simultaneous electrochemical determination of dopamine, uric acid and ascorbic acid using palladium nanoparticle-loaded carbon nanofibers modified electrode |
| title | Simultaneous electrochemical determination of dopamine, uric acid and ascorbic acid using palladium nanoparticle-loaded carbon nanofibers modified electrode |
| title_full | Simultaneous electrochemical determination of dopamine, uric acid and ascorbic acid using palladium nanoparticle-loaded carbon nanofibers modified electrode |
| title_fullStr | Simultaneous electrochemical determination of dopamine, uric acid and ascorbic acid using palladium nanoparticle-loaded carbon nanofibers modified electrode |
| title_full_unstemmed | Simultaneous electrochemical determination of dopamine, uric acid and ascorbic acid using palladium nanoparticle-loaded carbon nanofibers modified electrode |
| title_short | Simultaneous electrochemical determination of dopamine, uric acid and ascorbic acid using palladium nanoparticle-loaded carbon nanofibers modified electrode |
| title_sort | simultaneous electrochemical determination of dopamine, uric acid and ascorbic acid using palladium nanoparticle-loaded carbon nanofibers modified electrode |
| topic | Simultaneous determination Dopamine Electrospinning Pd nanoparticle-loaded carbon nanofiber Ascorbic acid Uric acid |
| url | http://hdl.handle.net/20.500.11937/8194 |