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Electrochemical Sensing Fabricated with TaO Nanoparticle-Electrochemically Reduced Graphene Oxide Nanocomposite for the Detection of Oxytetracycline.

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dc.contributor.author Magesa, Felista
dc.contributor.author Wu, Yiyong
dc.contributor.author Dong, Shuai
dc.contributor.author Tian, Yaling
dc.contributor.author Li, Guangli
dc.contributor.author Vianney, John Mary
dc.contributor.author Buza, Joram J.
dc.contributor.author Liu, Jun
dc.contributor.author He, Quanguo
dc.date.accessioned 2020-02-12T05:51:38Z
dc.date.available 2020-02-12T05:51:38Z
dc.date.issued 2020-01-08
dc.identifier.other 31936417
dc.identifier.uri DOI: 10.3390/biom10010110
dc.identifier.uri http://dspace.nm-aist.ac.tz/handle/123456789/547
dc.description This Research Article published by MDPI, 2020 en_US
dc.description.abstract A novel tantalum pentoxide nanoparticle-electrochemically reduced graphene oxide nanocomposite-modified glassy carbon electrode (TaO-ErGO/GCE) was developed for the detection of oxytetracycline in milk. The composition, structure and morphology of GO, TaO, and TaO-ErGO were characterized by X-ray diffraction (XRD) and scanning electron microscopy (SEM). Oxytetracycline electrochemical behavior on the bare GCE, GO/GCE, ErGO/GCE, and TaO-ErGO/GCE was studied by cyclic voltammetry. The voltammetric conditions (including scan rate, pH, deposition potential, and deposition time) were systematically optimized. With the spacious electrochemical active area, the TaO-ErGO/GCE showed a great magnification of the oxidation signal of oxytetracycline, while that of the other electrodes (GCE, GO/GCE, ErGO/GCE) could not reach the same level. Under the optimum conditions, the currents were proportional to the oxytetracycline concentration in the range from 0.2 to 10 μM, and a low detection limit of 0.095 μM (S/N = 3) was detectable. Moreover, the proposed TaO-ErGO/GCE performed practically with satisfactory results. The preparation of TaO-ErGO/GCE in the current work provides a minor outlook of detecting trace oxytetracycline in milk. en_US
dc.language.iso en en_US
dc.publisher MDPI en_US
dc.subject Ta2O5-ErGO composition en_US
dc.subject electrochemical reduced graphene oxide en_US
dc.subject modified electrode en_US
dc.subject oxytetracycline en_US
dc.subject voltammetric determination en_US
dc.title Electrochemical Sensing Fabricated with TaO Nanoparticle-Electrochemically Reduced Graphene Oxide Nanocomposite for the Detection of Oxytetracycline. en_US
dc.type Article en_US


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