Electrochemical bio-sensor of caffeine in food beverages on using silver vanadium oxide decorated in graphitic carbon nitride (AgVO@g-CN) Nano composite modified glassy carbon electrode

被引:6
作者
Vinothkumar, V. [1 ]
Poongan, A. [1 ]
Mandal, Abhishek [2 ]
Venkatesh, P. [1 ]
机构
[1] Pachaiyappas Coll, PG & Res Dept Chem, Chennai 600030, India
[2] Pondicherry Univ Cent Univ, Dept Biotechnol, Pondicherry 605014, India
关键词
Caffeine; Beverages; AgVO@g-CN nanocomposite; And Volttammetry; PASTE ELECTRODE; VOLTAMMETRIC DETERMINATION; HYDROTHERMAL SYNTHESIS; DOPAMINE; ACID; THEOPHYLLINE; NANORIBBONS; PERFORMANCE; TX-100; RAMAN;
D O I
10.1016/j.sbsr.2024.100637
中图分类号
O65 [分析化学];
学科分类号
070302 ; 081704 ;
摘要
The silver vanadate AgVO@g-CN was synthesized by the Co-precipitation method for the first time. The electrocatalytic potential of the AgVO@g-CN nanocomposite is investigated using cyclic voltammetry and differential pulse voltammetry to detect caffeine (CAF). The linear relationship between peak current and CAF concentration has been determined to be in the 6.5 to 255 mu M wide linear range, with a lower detection limit of 0.038 mu M. The sensitivity of produced electrode was 5.87 mu A mu M-1 cm-1. The successful application of the modified AgVO@g-CN nanocomposite electrode for CAF detection demonstrates operational stability, and the novel technique displayed good repeatability and reproducibility. Caffeine levels in commercial coffee, Red Bull, and Coca-Cola were successfully determined using the proposed sensor. The results obtained clearly show the capability of sensing and possible application of AgVO@g-CN nanocomposite for real-time electrochemical detection of CAF.
引用
收藏
页数:11
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