Quantification of Hydrogen Peroxide in Milk Samples Based on Glassy Carbon Electrode Modified with Fe/Cu Layered Double Hydroxide and Fe3O4 Nanoparticles
نویسندگان
1 Department of Chemistry, Faculty of Science, University of Zabol, P. O. Box 98615-538, Zabol, I.R. Iran
2 Department of Chemistry, Faculty of Science, University of Zabol, P. O. Box 98615-538, Zabol, I.R. Iran
3 Chemistry Research Group, Chemistry and Petrochemistry Research Center, Standard Research Institute, P.O. Box: 31745-139, Karaj, Iran
doi
10.30473/ijac.2022.62519.1217چکیده
This research aimed to develop a novel sensing platform for hydrogen peroxide (H2O2) quantification in the milk samples. The proposed sensor was fabricated using a glassy carbon electrode modified with Fe-Cu layered double hydroxide (LDH)/magnetic Fe3O4 nanoparticles (FeCu-LDH@Fe3O4/GCE). The resulting sensor was characterized using field emission scanning, electron microscopy, x-ray diffraction, and infrared spectroscopy, with the addition of the electrochemical methods. After optimization of affecting parameters, the FeCu-LDH@Fe3O4/GCE exhibited a high electrocatalytic activity for H2O2 electroreduction; and high cathodic peak currents were obtained. The proposed electrode also illustrated a wide linear dynamic domain in the range of 2 to 400 µM; and low limit of detection was calculated to be 0.6 µM.
