Synthesis of cobalt ferrite and simultaneous determination of ascorbic acid, acetaminophen and caffeine by voltammetric method using cobalt ferrite modified electrode

In the present article, the synthesis of spherical hollow cobalt ferrite and application as an electrode modifier were demonstrated. The synthesis of cobalt ferrite was conducted using carbonaceous microspheres prepared from a glucose solution as a sacrificial template, followed by subsequent heat t...

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Bibliographic Details
Published in:Journal of materials science. Materials in electronics 2019-09, Vol.30 (18), p.17245-17261
Main Authors: Thu, Phan Thi Kim, Trinh, Nguyen Duy, Hoan, Nguyen Thi Vuong, Du, Dang Xuan, Mau, Tran Xuan, Trung, Vo Huu, Phong, Nguyen Hai, Toan, Tran Thanh Tam, Khieu, Dinh Quang
Format: Article
Language:English
Subjects:
Analgesics
Analytical chemistry
Anodic stripping
Ascorbic acid
Caffeine
Characterization and Evaluation of Materials
Chemistry and Materials Science
Cobalt ferrites
Electrodes
Formulations
Glassy carbon
Heat treatment
Iron
Magnetic saturation
Materials Science
Microspheres
Optical and Electronic Materials
Synthesis
Voltammetry
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Summary:In the present article, the synthesis of spherical hollow cobalt ferrite and application as an electrode modifier were demonstrated. The synthesis of cobalt ferrite was conducted using carbonaceous microspheres prepared from a glucose solution as a sacrificial template, followed by subsequent heat treatment. The Fe/Co molar ratio in cobalt ferrite depends significantly on the initial Fe/Co molar ratio. The Fe/Co molar ratio as 1/1 could provide the stoichiometric cobalt ferrite (CoFe 2 O 4 ) with a hollow sphere structure and large saturation magnetization. The simultaneous quantification of ascorbic acid (ASA), acetaminophen (ACE), and caffeine (CAF) was performed utilizing the differential pulse anodic stripping voltammetric method with CoFe 2 O 4 modified glassy carbon electrode. The detection limits in the linear range of 0.2–4.4 µM are 0.313, 0.267, and 0.226 µM for ASA, ACE, and CAF, respectively. This proposed method enables the simultaneous detection of ASA, ACE, and CAF in pharmaceutical formulations and beverage samples. The determined concentration of the analytes is comparable with that obtained with HPLC.
ISSN:0957-4522
1573-482X
DOI:10.1007/s10854-019-02072-8