• 文献标题:   An electrochemical sensor based on MOF-derived porous carbon/graphene composite for sensitive determination of carbendazim
  • 文献类型:   Article
  • 作  者:   GUO LN, ZHAO B, HAO L, ZHANG YF, WANG C
  • 作者关键词:   graphene, nickeldoping nanoporous carbon, carbendazim, electrochemical determination, voltammetry
  • 出版物名称:   MICROCHIMICA ACTA
  • ISSN:   0026-3672 EI 1436-5073
  • 通讯作者地址:  
  • 被引频次:   1
  • DOI:   10.1007/s00604-022-05526-9
  • 出版年:   2022

▎ 摘  要

A sensitive electrochemical sensor for the determination of carbendazim (CBZ) was developed with Ni-doping nanoporous carbon-graphene composite (G-Ni/C) as the electrode material. The combination of graphene and Ni-doping nanoporous carbon not only prevented the aggregation of graphene, but also improved electric conductivity and substantially enhanced the electro catalytic activity for CBZ sensing. The electrochemical characterization of G-Ni/C towards CBZ determination was conducted by cyclic voltammetry (CV) and differential pulse voltammetry (DPV) . The sensor based on G-Ni/C/GCE exhibits good electroanalytical activity towards the electro-oxidation of CBZ at the potential of + 0.6 V vs Ag/AgCl. Some key factors including sample pH, scan rates, accumulation potential, and accumulation time were investigated. The method offered a wide linear range of 0.04 to 10.0 mu M with a detection limit of 8.9 nM. The obtained sensor was successfully employed for the determination of CBZ in pond water and juice samples with RSD <5.7% and recoveries in the range 91.3-111%.