Development of an Ionic Liquid based-Fe3O4/Gr Nanocomposite for Sensitive Electrochemical Sensing and Monitoring of Vanillin in Food Products

• Published in: Topics in catalysis Vol. 68; no. 5; pp. 718 - 725
• Main Authors: Khademi, Feryal, Motamedzadegan, Ali, Farahmandfar, Reza, Hamzeh, Shabnam, Shahidi, Seyed-Ahmad
• Format: Journal Article
• Language: English
• Published: New York Springer US 01.03.2025; Springer Nature B.V
• Subjects: Catalysis; Characterization and Evaluation of Materials; Chemistry; Chemistry and Materials Science; Graphene; Industrial Chemistry/Chemical Engineering; Ionic liquids; Iron oxides; Nanocomposites; Original Paper; Pharmacy; Physical Chemistry; Statistical analysis; Vanillin; Votammetry; Modified electrode; Oxidation; Vanillin; Food analysis; Fe; O; Ionic liquid
• ISSN: 1022-5528; 1572-9028
• DOI: 10.1007/s11244-024-01977-x

Rapid electrochemical strategy-based sensor fabricated for measuring vanillin as an important additive compound in the food industry by combining iron oxide/graphene (Fe 3 O 4 /Gr) nanocomposite as a catalyst and 1-butyl-3-ethyl imidazolium chloride (1B3EICl) as an ionic liquid binder to make a modified carbon paste electrode (Fe 3 O 4 /Gr/1B3EICl/CPE). For optimization of the proposed sensor, some electrochemical parameters such as pH, scan rate, the ratio of Fe 3 O 4 /Gr, and 1B3EICl in the sensor matrix were investigated by differential pulse voltammetric method. The obtained results showed a wide dynamic range between 1.0 nM and 220 µM and detection limit of 0.5 nM to monitor vanillin using electrochemical signals. Finally, Fe 3 O 4 /Gr/1B3EICl/CPE was employed for analysis of real food samples and statistical analyses confirmed the efficiency of Fe 3 O 4 /Gr/1B3EICl/CPE for the determination of vanillin in real situations.