• 文献标题:   An ultrasensitive luteolin electrochemical sensor based on a glass carbon electrode modified using multi-walled carbon nanotube-supported hollow cobalt sulfide (CoSx) polyhedron/graphene quantum dot composites
  • 文献类型:   Article
  • 作  者:   ZHANG L, ZHAO PC, WANG CX, WANG YL, YANG YQ, XIE YX, FEI JJ
  • 作者关键词:  
  • 出版物名称:   ANALYST
  • ISSN:   0003-2654 EI 1364-5528
  • 通讯作者地址:  
  • 被引频次:   4
  • DOI:   10.1039/d2an00345g EA MAY 2022
  • 出版年:   2022

▎ 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.