石墨烯
纳米复合材料
材料科学
电化学
电化学气体传感器
咖啡酸
电极
硫化锌
锌
化学工程
硫化物
氧化物
电催化剂
检出限
无机化学
核化学
纳米技术
化学
有机化学
色谱法
冶金
抗氧化剂
物理化学
工程类
作者
Subramaniyan Vinoth,Mani Govindasamy,Sea‐Fue Wang,A. Sathiyan
标识
DOI:10.1016/j.ultsonch.2020.105036
摘要
Herein, we have synthesized zinc sulfide nanospheres (ZnS NPs) encapsulated on reduced graphene oxide (RGO) hybrid by an ultrasonic bath (50 kHz/60 W). The physical and structural properties of ZnS [email protected] hybrid were analyzed by TEM, XRD, EIS and EDS. As-prepared ZnS [email protected] hybrid was applied towards the electrochemical determination of caffeic acid (CA) in various food samples. The ZnS [email protected] hybrid modified electrode (GCE) exhibited an excellent electrocatalytic performance towards caffeic acid detection and determination, when compared to other modified electrodes. Therefore, the electrochemical sensing performance of the fabricated and nanocomposite modified electrode was significantly improved owing to the synergistic effect of ZnS NPs and RGO catalyst. Furthermore, the hybrid materials provide highly active electro-sites as well as rapid electron transport pathways. The proposed electrochemical caffeic acid sensor produces a wide linear range of 0.015–671.7 µM with a nanomolar level detection limit (3.29 nM). In addition, the real sample analysis of the proposed sensor has applied to the determination of caffeic acid in various food samples.
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