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3 results on '"Cobalt and nickel ferrite"'

1. Amperometric ascorbic acid sensor based on doped ferrites nanoparticles modified glassy carbon paste electrode.

Author

Dimitrijević, Teodora, Vulić, Predrag, Manojlović, Dragan, Nikolić, Aleksandar S., and Stanković, Dalibor M.

Subjects
*FERRITES, *AMPEROMETRIC sensors, *VITAMIN C, *CARBON electrodes, *MAGNETIC nanoparticles, *ELECTROCHEMICAL sensors
Abstract

In this study, a novel electrochemical sensor for quantification of ascorbic acid with amperometric detection in physiological conditions was constructed. For this purpose, cobalt and nickel ferrites were synthesized using microwave and ultrasound assistance, characterized by scanning electron microscopy (SEM), Fourier transform infrared (FTIR) spectroscopy, and X-ray powder diffraction (XRPD), and used for modification of glassy carbon paste electrode (GCPE). It was shown that introducing these nanoparticles to the structure of GCPE led to increasing analytical performance. Co ferrite modified GCPE (CoFeGCPE) showed better characteristics toward ascorbic acid sensing. The limit of detection (LOD) obtained by sensor was calculated to be 0.0270 mg/L, with linear range from 0.1758 to 2.6010 mg/L. This sensor was successfully applied for practical analysis, and the obtained results demonstrated that the proposed procedure could be a promising replacement for the conventional electrode materials and time-consuming and expensive separation methods. [ABSTRACT FROM AUTHOR]

Published
2016
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2. Amperometric ascorbic acid sensor based on doped ferrites nanoparticles modified glassy carbon paste electrode

Author

Teodora Dimitrijević, Aleksandar S. Nikolić, Dalibor M. Stanković, Predrag Vulić, and Dragan Manojlović

Subjects
Materials science, Surface Properties, Biophysics, Amperometry, Nanotechnology, Ascorbic Acid, 02 engineering and technology, Glassy carbon, 010402 general chemistry, XRPD, Ferric Compounds, 01 natural sciences, Biochemistry, Microwave synthesis, Nickel, Particle Size, Fourier transform infrared spectroscopy, Microwaves, Electrodes, Molecular Biology, Detection limit, Cobalt and nickel ferrite, Electrochemical Techniques, Cell Biology, 021001 nanoscience & nanotechnology, Ascorbic acid, Carbon, 0104 chemical sciences, Electrochemical gas sensor, Ultrasonic Waves, Electrode, SEM, Nanoparticles, Ferrite (magnet), Glass, 0210 nano-technology, Nuclear chemistry
Abstract

In this study, a novel electrochemical sensor for quantification of ascorbic acid with amperometric detection in physiological conditions was constructed. For this purpose, cobalt and nickel ferrites were synthesized using microwave and ultrasound assistance, characterized by scanning electron microscopy (SEM), Fourier transform infrared (FTIR) spectroscopy, and X-ray powder diffraction (XRPD), and used for modification of glassy carbon paste electrode (GCPE). It was shown that introducing these nanoparticles to the structure of GCPE led to increasing analytical performance. Co ferrite modified GCPE (CoFeGCPE) showed better characteristics toward ascorbic acid sensing. The limit of detection (LOD) obtained by sensor was calculated to be 0.0270 mg/L, with linear range from 0.1758 to 2.6010 mg/L. This sensor was successfully applied for practical analysis, and the obtained results demonstrated that the proposed procedure could be a promising replacement for the conventional electrode materials and time-consuming and expensive separation methods. (C) 2016 Elsevier Inc. All rights reserved. Supplementary material: [http://cherry.chem.bg.ac.rs/handle/123456789/3336]

Published
2016

3. Supplementary data for the article: Dimitrijević, T.; Vulić, P.; Manojlović, D.; Nikolić, A. S.; Stanković, D. M. Amperometric Ascorbic Acid Sensor Based on Doped Ferrites Nanoparticles Modified Glassy Carbon Paste Electrode. Analytical Biochemistry 2016, 504, 20–26. https://doi.org/10.1016/j.ab.2016.03.020

Author

Dimitrijević, Teodora, Vulić, Predrag J., Manojlović, Dragan D., Nikolić, Aleksandar S., Stanković, Dalibor, Dimitrijević, Teodora, Vulić, Predrag J., Manojlović, Dragan D., Nikolić, Aleksandar S., and Stanković, Dalibor

Published
2016

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