Electrochemical reduced graphene oxide-poly(eriochrome black T)/gold nanoparticles modified glassy carbon electrode for simultaneous determination of ascorbic acid, dopamine and uric acid
This work reports on the preparation of electrochemically reduced graphene oxide (ERGO)-poly(eriochrome black T) (pEBT) assembled gold nanoparticles for the simultaneous determination of ascorbic acid (AA), dopamine (DA) and uric acid (UA) in PBS pH 6.0. Characterisations of the composite were carri...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2018
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| Online Access: | http://psasir.upm.edu.my/id/eprint/72545/1/Electrochemical%20reduced%20graphene.pdf |
| _version_ | 1796979478781493248 |
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| author | Alshik Edris, Nusiba Mohammed Modawe Abdullah, Jaafar Kamaruzaman, Sazlinda Saiman, Mohd Izham Sulaiman, Yusran |
| author_facet | Alshik Edris, Nusiba Mohammed Modawe Abdullah, Jaafar Kamaruzaman, Sazlinda Saiman, Mohd Izham Sulaiman, Yusran |
| author_sort | Alshik Edris, Nusiba Mohammed Modawe |
| collection | UPM |
| description | This work reports on the preparation of electrochemically reduced graphene oxide (ERGO)-poly(eriochrome black T) (pEBT) assembled gold nanoparticles for the simultaneous determination of ascorbic acid (AA), dopamine (DA) and uric acid (UA) in PBS pH 6.0. Characterisations of the composite were carried out by scanning electron microscopy (SEM), Fourier transform infrared (FTIR), electrochemical impedance spectroscopy (EIS) and cyclic voltammetry. As a result of the synergistic effect, the modified glassy carbon electrode (GCE) possessed an efficient electrochemical catalytic activity with a high selectivity and sensitivity in oxidising AA-DA and DA-UA as compared to the bare GCE. The peak separations of AA and DA, DA and UA were 183 mV and 150 mV, respectively. The linear response ranges for AA, DA and UA were 10–900 μM, 0.5–20 μM and 2–70 μM with detection limits of 0.53 μM, 0.009 μM and 0.046 μM (S/N = 3), respectively. The sensitivity of ERGO-pEBT/AuNPs was measured as 0.003 µA/μM, 0.164 µA/μM and 0.034 µA/μM for AA, DA, and UA, respectively. The modified electrochemical sensor was used in the determination of AA, DA, and UA in vitamin C tablets and urine sample with good recovery. |
| first_indexed | 2024-03-06T10:09:31Z |
| format | Article |
| id | upm.eprints-72545 |
| institution | Universiti Putra Malaysia |
| language | English |
| last_indexed | 2024-03-06T10:09:31Z |
| publishDate | 2018 |
| publisher | Elsevier |
| record_format | dspace |
| spelling | upm.eprints-725452020-10-23T09:30:59Z http://psasir.upm.edu.my/id/eprint/72545/ Electrochemical reduced graphene oxide-poly(eriochrome black T)/gold nanoparticles modified glassy carbon electrode for simultaneous determination of ascorbic acid, dopamine and uric acid Alshik Edris, Nusiba Mohammed Modawe Abdullah, Jaafar Kamaruzaman, Sazlinda Saiman, Mohd Izham Sulaiman, Yusran This work reports on the preparation of electrochemically reduced graphene oxide (ERGO)-poly(eriochrome black T) (pEBT) assembled gold nanoparticles for the simultaneous determination of ascorbic acid (AA), dopamine (DA) and uric acid (UA) in PBS pH 6.0. Characterisations of the composite were carried out by scanning electron microscopy (SEM), Fourier transform infrared (FTIR), electrochemical impedance spectroscopy (EIS) and cyclic voltammetry. As a result of the synergistic effect, the modified glassy carbon electrode (GCE) possessed an efficient electrochemical catalytic activity with a high selectivity and sensitivity in oxidising AA-DA and DA-UA as compared to the bare GCE. The peak separations of AA and DA, DA and UA were 183 mV and 150 mV, respectively. The linear response ranges for AA, DA and UA were 10–900 μM, 0.5–20 μM and 2–70 μM with detection limits of 0.53 μM, 0.009 μM and 0.046 μM (S/N = 3), respectively. The sensitivity of ERGO-pEBT/AuNPs was measured as 0.003 µA/μM, 0.164 µA/μM and 0.034 µA/μM for AA, DA, and UA, respectively. The modified electrochemical sensor was used in the determination of AA, DA, and UA in vitamin C tablets and urine sample with good recovery. Elsevier 2018-12 Article PeerReviewed text en http://psasir.upm.edu.my/id/eprint/72545/1/Electrochemical%20reduced%20graphene.pdf Alshik Edris, Nusiba Mohammed Modawe and Abdullah, Jaafar and Kamaruzaman, Sazlinda and Saiman, Mohd Izham and Sulaiman, Yusran (2018) Electrochemical reduced graphene oxide-poly(eriochrome black T)/gold nanoparticles modified glassy carbon electrode for simultaneous determination of ascorbic acid, dopamine and uric acid. Arabian Journal of Chemistry, 11 (8). 1301 - 1312. ISSN 1878-5352 https://www.sciencedirect.com/science/article/pii/S1878535218301953 10.1016/j.arabjc.2018.09.002 |
| spellingShingle | Alshik Edris, Nusiba Mohammed Modawe Abdullah, Jaafar Kamaruzaman, Sazlinda Saiman, Mohd Izham Sulaiman, Yusran Electrochemical reduced graphene oxide-poly(eriochrome black T)/gold nanoparticles modified glassy carbon electrode for simultaneous determination of ascorbic acid, dopamine and uric acid |
| title | Electrochemical reduced graphene oxide-poly(eriochrome black T)/gold nanoparticles modified glassy carbon electrode for simultaneous determination of ascorbic acid, dopamine and uric acid |
| title_full | Electrochemical reduced graphene oxide-poly(eriochrome black T)/gold nanoparticles modified glassy carbon electrode for simultaneous determination of ascorbic acid, dopamine and uric acid |
| title_fullStr | Electrochemical reduced graphene oxide-poly(eriochrome black T)/gold nanoparticles modified glassy carbon electrode for simultaneous determination of ascorbic acid, dopamine and uric acid |
| title_full_unstemmed | Electrochemical reduced graphene oxide-poly(eriochrome black T)/gold nanoparticles modified glassy carbon electrode for simultaneous determination of ascorbic acid, dopamine and uric acid |
| title_short | Electrochemical reduced graphene oxide-poly(eriochrome black T)/gold nanoparticles modified glassy carbon electrode for simultaneous determination of ascorbic acid, dopamine and uric acid |
| title_sort | electrochemical reduced graphene oxide poly eriochrome black t gold nanoparticles modified glassy carbon electrode for simultaneous determination of ascorbic acid dopamine and uric acid |
| url | http://psasir.upm.edu.my/id/eprint/72545/1/Electrochemical%20reduced%20graphene.pdf |
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