石墨烯
材料科学
纳米复合材料
碳纳米管
硫化钴
钴
检出限
电化学
量子点
电化学气体传感器
电极
碳纤维
纳米技术
硫化物
多面体
复合材料
化学工程
复合数
化学
几何学
物理化学
数学
色谱法
冶金
工程类
作者
Li Zhang,Pengcheng Zhao,Chenxi Wang,Yilin Wang,Yaqi Yang,Yixi Xie,Junjie Fei
出处
期刊:Analyst
[The Royal Society of Chemistry]
日期:2022-01-01
卷期号:147 (12): 2739-2748
被引量:9
摘要
Luteolin (LU), belonging to the group of flavonoids with rich biological activities, has attracted considerable attention. Herein, a novel ultrasensitive LU electrochemical sensor based on hollow cobalt sulfide polyhedron-multi-walled carbon nanotube nanocomposites (CoSx-MWCNTs) and graphene quantum dots (GQDs) was proposed. The hollow CoSx polyhedrons derived from ZIF-67 showed excellent electrochemical sensing performance, which was attributed to the abundant surface active sites endowed by the special hollow structure. When detecting LU using the DPV model, the CoSx-MWCNTs/GQDs/GCE showed a linear range of 5 nM-2000 nM under optimal conditions, and the corresponding detection limit (LOD) was 1.2 nM (S/N = 3). In addition, the sensor exhibited satisfactory sensitivity and accuracy for detecting LU in real samples from Chrysanthemum extracts.
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