Citation
Abstract
A simple and sensitive sensor of poly(3,4-ethylenedioxythiophene)/reduced graphene oxide/manganese dioxide modified glassy carbon electrode (PrGO/MnO2) was fabricated via cyclic voltammetry (CV) for simultaneous detection of uric acid (UA), dopamine (DA) and ascorbic acid (AA). The PrGO/MnO2 composite film possessed excellent electrocatalytic rate and high selectivity towards the oxidation of UA, DA and AA in 0.1 M PBS (pH 6.0). The peak potential separation (∆Ep) of AA-DA, AA-UA and DA-UA were 166, 312 and 146 mV, respectively. The detection limits of 1.00, 0.02 and 0.05 μM with a linear response of 1–800, 0.03–45 and 0.3–80 μM were obtained for AA, DA and UA, respectively. This sensor also showed an excellent stability (reproducibility and repeatability).
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Additional Metadata
Item Type: | Article |
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Divisions: | Faculty of Science Institute of Advanced Technology |
DOI Number: | https://doi.org/10.1016/j.jelechem.2018.04.065 |
Publisher: | Elsevier |
Keywords: | Reduced graphene oxide; Manganese dioxide; PEDOT; Simultaneous detection; Uric acid; Dopamine and ascorbic acid |
Depositing User: | Nurul Ainie Mokhtar |
Date Deposited: | 23 Oct 2020 09:40 |
Last Modified: | 23 Oct 2020 09:41 |
Altmetrics: | http://www.altmetric.com/details.php?domain=psasir.upm.edu.my&doi=10.1016/j.jelechem.2018.04.065 |
URI: | http://psasir.upm.edu.my/id/eprint/72546 |
Statistic Details: | View Download Statistic |
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