A single-step synthesis of nitrogen-doped graphene sheets decorated with cobalt hydroxide nanoflakes for the determination of dopamine
Nitrogen-doped reduced graphene oxide (NrGO) sheets decorated with Co(OH)2 nanoflakes were prepared by a single-step hydrothermal process. The morphological and structural characterizations of as synthesized NrGO@Co(OH)2 nanoflakes were performed by field emission scanning electron microscopy (FESEM...
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my.um.eprints.190962018-09-05T01:14:12Z http://eprints.um.edu.my/19096/ A single-step synthesis of nitrogen-doped graphene sheets decorated with cobalt hydroxide nanoflakes for the determination of dopamine Shahid, M.M. Ismail, A.H. Al-Mokaram, A.M.A.A.A. Vikneswaran, R. Ahmad, S. Hamza, A. Numan, A. Q Science (General) QC Physics QD Chemistry Nitrogen-doped reduced graphene oxide (NrGO) sheets decorated with Co(OH)2 nanoflakes were prepared by a single-step hydrothermal process. The morphological and structural characterizations of as synthesized NrGO@Co(OH)2 nanoflakes were performed by field emission scanning electron microscopy (FESEM), EDX-mapping and X-ray diffraction (XRD). NrGO@Co(OH)2 nanoflakes modified glassy carbon electrode (GCE) was used for electrochemical sensing of dopamine in neutral medium. The nanocomposite modified electrode showed enhanced electrochemical sensing ability for the detection of dopamine and the limit of detection (LoD) was found to be 0.201 μM with a sensitivity value of 0.0286 ± 0.002 mA mM−1. Interference studies revealed that NrGO@Co(OH)2─GCE endow excellent selectivity for DA detection even in the presence of higher concentration of common co-existing physiological interfering analytes. Additionally, proposed sensor demonstrated excellent performance in urine samples with promising reproducibility and stability. Taylor & Francis 2017 Article PeerReviewed Shahid, M.M. and Ismail, A.H. and Al-Mokaram, A.M.A.A.A. and Vikneswaran, R. and Ahmad, S. and Hamza, A. and Numan, A. (2017) A single-step synthesis of nitrogen-doped graphene sheets decorated with cobalt hydroxide nanoflakes for the determination of dopamine. Progress in Natural Science, 27 (5). pp. 582-587. ISSN 1002-0071 http://dx.doi.org/10.1016/j.pnsc.2017.09.001 doi:10.1016/j.pnsc.2017.09.001 |
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Q Science (General) QC Physics QD Chemistry Shahid, M.M. Ismail, A.H. Al-Mokaram, A.M.A.A.A. Vikneswaran, R. Ahmad, S. Hamza, A. Numan, A. A single-step synthesis of nitrogen-doped graphene sheets decorated with cobalt hydroxide nanoflakes for the determination of dopamine |
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Nitrogen-doped reduced graphene oxide (NrGO) sheets decorated with Co(OH)2 nanoflakes were prepared by a single-step hydrothermal process. The morphological and structural characterizations of as synthesized NrGO@Co(OH)2 nanoflakes were performed by field emission scanning electron microscopy (FESEM), EDX-mapping and X-ray diffraction (XRD). NrGO@Co(OH)2 nanoflakes modified glassy carbon electrode (GCE) was used for electrochemical sensing of dopamine in neutral medium. The nanocomposite modified electrode showed enhanced electrochemical sensing ability for the detection of dopamine and the limit of detection (LoD) was found to be 0.201 μM with a sensitivity value of 0.0286 ± 0.002 mA mM−1. Interference studies revealed that NrGO@Co(OH)2─GCE endow excellent selectivity for DA detection even in the presence of higher concentration of common co-existing physiological interfering analytes. Additionally, proposed sensor demonstrated excellent performance in urine samples with promising reproducibility and stability. |
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Article |
author |
Shahid, M.M. Ismail, A.H. Al-Mokaram, A.M.A.A.A. Vikneswaran, R. Ahmad, S. Hamza, A. Numan, A. |
author_facet |
Shahid, M.M. Ismail, A.H. Al-Mokaram, A.M.A.A.A. Vikneswaran, R. Ahmad, S. Hamza, A. Numan, A. |
author_sort |
Shahid, M.M. |
title |
A single-step synthesis of nitrogen-doped graphene sheets decorated with cobalt hydroxide nanoflakes for the determination of dopamine |
title_short |
A single-step synthesis of nitrogen-doped graphene sheets decorated with cobalt hydroxide nanoflakes for the determination of dopamine |
title_full |
A single-step synthesis of nitrogen-doped graphene sheets decorated with cobalt hydroxide nanoflakes for the determination of dopamine |
title_fullStr |
A single-step synthesis of nitrogen-doped graphene sheets decorated with cobalt hydroxide nanoflakes for the determination of dopamine |
title_full_unstemmed |
A single-step synthesis of nitrogen-doped graphene sheets decorated with cobalt hydroxide nanoflakes for the determination of dopamine |
title_sort |
single-step synthesis of nitrogen-doped graphene sheets decorated with cobalt hydroxide nanoflakes for the determination of dopamine |
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Taylor & Francis |
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2017 |
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http://eprints.um.edu.my/19096/ http://dx.doi.org/10.1016/j.pnsc.2017.09.001 |
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