Electrochemical determination of methylparaben with manganese ferrite/activated carbon-modified electrode

• Published in: Journal of materials science. Materials in electronics Vol. 33; no. 26; pp. 20884 - 20899
• Main Authors: Binh, Nguyen Thanh, Dung, Nguyen Nho, Thanh, Nguyen Mau, Nhiem, Dao Ngoc, Dung, Doan Manh, Son, Le Lam, Quyen, Nguyen Duc Vu, Tuyen, Tran Ngoc, Tuan, Nguyen Hoang, Khieu, Dinh Quang
• Format: Journal Article
• Language: English
• Published: New York Springer US 01.09.2022; Springer Nature B.V
• Subjects: Acids; Activated carbon; Adsorption; Catalysis; Characterization and Evaluation of Materials; Chemistry and Materials Science; Coal; Electrodes; Energy storage; Ferrites; Hydrothermal treatment; Magnetic properties; Magnetic saturation; Magnetometers; Manganese; Mapping; Materials Science; Optical and Electronic Materials; Parameter modification; Ratios
• ISSN: 0957-4522; 1573-482X
• DOI: 10.1007/s10854-022-08896-1

Manganese ferrite/rice husk-derived activated carbon (MF/AC) was synthesized in a coprecipitation process followed by hydrothermal treatment. The obtained materials were characterized by using X-ray diffraction (XRD), scanning electron microscopy (SEM), energy-dispersive X-ray mapping (EDX-mapping), vibrating sample magnetometer (VSM), and nitrogen adsorption/desorption isotherms. The MF/AC samples exhibit para-super-magnetic and excellent magnetic properties with high saturation magnetization. The obtained MF/AC was utilized as an electrode modifier for determining methylparaben (MP) in cosmetic products. The pH, amount of modifier, and DPV parameters were investigated to optimize the experimental conditions for the electrochemical process. In the MP concentration range of 14.77–90.91 μM, the peak DPV current exhibits good linearity, with a limit of detection of 4.89 μM and a limit of quantification of 46.55 μM. The data were statistically compared with those obtained from the standard HPLC method.