Mahmoudian, M. R. and Alias, Y. and Woi, Pei Meng and Yousefi, R. and Basirun, W. J. (2020) An electrochemical sensor based on Pt/g-C3N4/polyaniline nanocomposite for detection of Hg2+. Advanced Powder Technology, 31 (8). pp. 3372-3380. ISSN 09218831, DOI https://doi.org/10.1016/j.apt.2020.06.024.
Full text not available from this repository.Abstract
The synthesis of Pt/g-C3N4/polyaniline nanocomposites (Pt/g-C3N4/PAn NCs) via the direct reduction of Pt (II) in the presence of L-cysteine as the reducing agent is presented in this study. X-ray diffraction analysis showed that the Pt cations were reduced to metallic Pt in the presence of L-cysteine. Field emission scanning electron microscope images confirmed a low agglomeration of metallic Pt when synthesized in the presence of g-C3N4. Electrochemical impedance spectroscopy results showed that the low conductivity of g-C3N4 is compensated with the presence of polyaniline (PAn). A glassy carbon electrode modified with the Pt/g-C3N4/PAn NCs showed high selectivity and sensitivity for the detection of Hg2+. The presence of active sites in the g-C3N4 and PAn enhanced the adsorption of Hg2+. The voltammetric response was linear in the concentration range of 1-500 nM Hg2+, with the detection limit of 0.014 nM (at S/N = 3). (C) 2020 The Society of Powder Technology Japan. Published by Elsevier B.V. and The Society of Powder Technology Japan. All rights reserved.
| Item Type: | Article |
|---|---|
| Funders: | FRGS [Grant No: FP071-2018A], RU Geran-Fakulti Program [Grant No: GPF064B-2018], Ministry of Higher Education, Malaysia [Grant No: PG093-2015B], Universiti Malaya [Grant No: PR003-2018A] |
| Uncontrolled Keywords: | Electrochemical sensor; Voltammetric sensing; g-C3N4; L-cysteine; Hg cation |
| Subjects: | Q Science > Q Science (General) Q Science > QD Chemistry |
| Divisions: | Faculty of Science > Department of Chemistry |
| Depositing User: | Ms Zaharah Ramly |
| Date Deposited: | 28 Oct 2024 13:23 |
| Last Modified: | 28 Oct 2024 13:23 |
| URI: | http://eprints.um.edu.my/id/eprint/36521 |
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