Electroanalytical Chemistry Laboratory, Department of Chemistry, Faculty of Science, University of Zanjan, Postal Code 45371-38791 Zanjan, Iran.
Electroanalytical Chemistry Laboratory, Department of Chemistry, Faculty of Science, University of Zanjan, Postal Code 45371-38791 Zanjan, Iran.
Food Chem. 2021 Jul 30;351:129252. doi: 10.1016/j.foodchem.2021.129252. Epub 2021 Feb 9.
Herein, an innovative enzyme free electrochemiluminescence chlorpyrifos sensor was reported based on the incorporation of ternary nanocomposite (ruthenium nanobeads/silver nanoparticles/graphene oxide) on the surface of glassy carbon electrode. The silver nanoparticles as a robust signal enhancing agent were well deposited on the modified graphene oxide/glassy carbon electrode and exhibited supreme electrocatalytic proficiency. Then, Ru(bipy) species in bead-like nanoparticles were uniformly anchored on the surface of the modified electrode with the help of chitosan, as a good crosslinking agent. Boron nitride quantum dots as a new coreactant species showed the excellent proficiency for signal enhancement of the fabricated electrode. The fabricated electrode was successfully used as an ultra-sensitive sensor for trace analysis of chlorpyrifos by ECL technique. The wide linear range and the low detection limit were obtained from 5.0 × 10 to 4.2 × 10 M and 6.5 × 10 M, respectively.
本文报道了一种基于三元纳米复合材料（钌纳米珠/银纳米粒子/氧化石墨烯）在玻碳电极表面的共沉淀，构建了一种新颖的无需酶的电化学发光毒死蜱传感器。银纳米粒子作为一种强大的信号增强剂，很好地沉积在修饰的氧化石墨烯/玻碳电极上，并表现出卓越的电催化性能。然后，在壳聚糖的帮助下，珠状纳米粒子中的 Ru(bipy)物种均匀地锚定在修饰电极的表面。氮化硼量子点作为一种新的共反应物，显示出对构建电极信号增强的优异性能。通过 ECL 技术，所构建的电极成功地用作痕量分析毒死蜱的超灵敏传感器。从 5.0×10 到 4.2×10 M 获得了宽线性范围和低检测限，分别为 6.5×10 M。
