Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, No. 1, Section 3, Chung-Hsiao East Road, Taipei 106, Taiwan, ROC.
Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, No. 1, Section 3, Chung-Hsiao East Road, Taipei 106, Taiwan, ROC.
J Hazard Mater. 2021 Jul 5;413:125265. doi: 10.1016/j.jhazmat.2021.125265. Epub 2021 Jan 29.
The design and fabrication of effective electrochemical sensor for ultrasensitive detection of feed additive and multidrug are highly significant in food analysis. In this work, we explored to develop the possibility for rapid detection of feed additive drug using bismuth telluride (BiTe) decorated graphitic carbon nitrides (GCN) nanostructures as a modified electrode for electrochemical sensing. Herein, the modified electrode was focused on the development of electrocatalytic performances for the determination of salbutamol in food products. The electrochemical sensors are developed by bismuth telluride sheets interconnected with graphitic carbon nitrides sheets (BiTe/GCN) on to a screen-printed carbon electrode. The binary nanosheets of BiTe/GCN exhibited an enhanced electrocatalytic ability towards salbutamol detection owing to their selective adsorption, by the combination of electrostatic interaction of binary nanosheets and the formation of charge assisted interactions between salbutamol and BiTe/GCN surfaces. A nanomolar limit of detection (1.36 nM) was calculated in 0.05 M phosphate buffer (PB) supporting electrolyte (pH 7.0) using differential pulse voltammetry. The linear dynamic ranges with respect to salbutamol concentration were 0.01-892.5 μM, and the sensitivity of the sensor was 36.277 μA μM cm. The sensor stability and reproducibility performances were observed. However, the obtained results are highly satisfactory which suggest the application of binary nanosheets in real-time food analysis.
用于超灵敏检测饲料添加剂和多药物的有效电化学传感器的设计和制造在食品分析中具有重要意义。在这项工作中，我们探索了使用碲化铋（BiTe）修饰的石墨相氮化碳（GCN）纳米结构作为修饰电极用于电化学传感来快速检测饲料添加剂药物的可能性。在此，修饰电极的重点是开发用于测定食品中沙丁胺醇的电催化性能。通过将碲化铋片与石墨相氮化碳片（BiTe/GCN）相互连接在丝网印刷碳电极上，开发了电化学传感器。由于二元纳米片的静电相互作用和沙丁胺醇与 BiTe/GCN 表面之间形成的电荷辅助相互作用的选择性吸附，BiTe/GCN 二元纳米片对沙丁胺醇检测表现出增强的电催化能力。在 0.05 M 磷酸盐缓冲液（PB）支持电解质（pH 7.0）中，使用差分脉冲伏安法计算出纳摩尔检测限（1.36 nM）。相对于沙丁胺醇浓度的线性动态范围为 0.01-892.5 μM，传感器的灵敏度为 36.277 μA μM cm。观察到传感器的稳定性和重现性性能。然而，得到的结果非常令人满意，这表明二元纳米片在实时食品分析中的应用。
