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

IF 2.8 3区化学 Q2 CHEMISTRY, APPLIED

Topics in Catalysis Pub Date : 2024-06-17 DOI:10.1007/s11244-024-01977-x

Feryal Khademi, Ali Motamedzadegan, Reza Farahmandfar, Shabnam Hamzeh, Seyed-Ahmad Shahidi

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Abstract

Rapid electrochemical strategy-based sensor fabricated for measuring vanillin as an important additive compound in the food industry by combining iron oxide/graphene (Fe₃O₄/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 (Fe₃O₄/Gr/1B3EICl/CPE). For optimization of the proposed sensor, some electrochemical parameters such as pH, scan rate, the ratio of Fe₃O₄/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, Fe₃O₄/Gr/1B3EICl/CPE was employed for analysis of real food samples and statistical analyses confirmed the efficiency of Fe₃O₄/Gr/1B3EICl/CPE for the determination of vanillin in real situations.

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开发基于离子液体的 Fe3O4/Gr 纳米复合材料，用于灵敏电化学传感和监测食品中的香兰素含量

以氧化铁/石墨烯（Fe3O4/Gr）纳米复合材料为催化剂，1-丁基-3-乙基咪唑氯化物（1B3EICl）为离子液体粘合剂，制成改性碳浆电极（Fe3O4/Gr/1B3EICl/CPE），用于测量食品工业中重要的添加剂化合物香兰素。为了优化所提出的传感器，采用差分脉冲伏安法研究了传感器基体中的一些电化学参数，如 pH 值、扫描速率、Fe3O4/Gr 和 1B3EICl 的比例。结果表明，利用电化学信号监测香兰素的动态范围在 1.0 nM 至 220 µM 之间，检测限为 0.5 nM。最后，Fe3O4/Gr/1B3EICl/CPE 被用于分析实际食品样品，统计分析证实了 Fe3O4/Gr/1B3EICl/CPE 在实际情况下测定香兰素的效率。

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来源期刊

Topics in Catalysis 化学-物理化学

CiteScore

5.70

自引率

5.60%

发文量

197

审稿时长

2 months

期刊介绍： Topics in Catalysis publishes topical collections in all fields of catalysis which are composed only of invited articles from leading authors. The journal documents today’s emerging and critical trends in all branches of catalysis. Each themed issue is organized by renowned Guest Editors in collaboration with the Editors-in-Chief. Proposals for new topics are welcome and should be submitted directly to the Editors-in-Chief. The publication of individual uninvited original research articles can be sent to our sister journal Catalysis Letters. This journal aims for rapid publication of high-impact original research articles in all fields of both applied and theoretical catalysis, including heterogeneous, homogeneous and biocatalysis.