期刊
ANALYST
卷 147, 期 12, 页码 2739-2748出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/d2an00345g
关键词
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资金
- National Natural Science Foundation of China [21874114, 21475114, 22176160]
- Natural Science Foundation of Hunan [2021JJ30662]
- Xiangtan University Innovation Foundation for Postgraduate [XDCX2021B159]
In this study, a novel ultrasensitive LU electrochemical sensor based on hollow cobalt sulfide polyhedron-multi-walled carbon nanotube nanocomposites and graphene quantum dots was proposed. The sensor exhibited a linear range and low detection limit for LU, and could accurately detect LU in Chrysanthemum extracts.
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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