Voltammetric Determination of Rhodamine B Using a ZIF-67/Reduced Graphene Oxide Modified Electrode.
In: Journal of Nanomaterials, 2020-06-03, S. 1-14
Online
academicJournal
Zugriff:
In the present article, the synthesis of zeolite imidazolate framework-67/reduced graphene oxide (ZIF-67/rGO) and voltammetric determination of Rhodamine B (RhB) are demonstrated. The obtained materials were characterized by X-ray diffraction, scanning electron microscopy, transmission electron microscopy, X-ray photoelectron spectroscopy, and nitrogen adsorption/desorption isotherms. It was found that the ZIF-67/rGO composite consists of ZIF-67 nano-particles highly dispersed on the rGO matrix and possesses a high specific surface area. Because of the synergistic effect of good conductivity of rGO and high surface area of ZIF-67, the ZIF-67/rGO—modified glassy carbon electrode exhibits good electrochemical behavior toward Rhodamine B (RhB) oxidation. The use of this electrode to quantitate RhB with differential pulse voltammetric method was successful with a broad linear range, from 0.96 to 44.07 μg.L -1 of RhB and a low limit of detection of 1.79 μg.L -1 . The procedure was able to be applied to quantitatively determine RhB content in several food samples with an exceptional recovery rate (98-103%). The quantitative results highly agreed with that provided by high-performance liquid chromatography, revealing that this material is promising in in situ monitoring of other illegal additives in food. [ABSTRACT FROM AUTHOR]
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Titel: |
Voltammetric Determination of Rhodamine B Using a ZIF-67/Reduced Graphene Oxide Modified Electrode.
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Autor/in / Beteiligte Person: | Ngo, Huynh Truong ; Nguyen, Vo Thang ; Manh, Tran Duc ; Toan, Tran Thanh Tam ; Triet, Nguyen Thi Minh ; Binh, Nguyen Thanh ; Hoan, Nguyen Thi Vuong ; Thien, Tran Vinh ; Khieu, Dinh Quang |
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Zeitschrift: | Journal of Nanomaterials, 2020-06-03, S. 1-14 |
Veröffentlichung: | 2020 |
Medientyp: | academicJournal |
ISSN: | 1687-4110 (print) |
DOI: | 10.1155/2020/4679061 |
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