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An electrochemical sensor based on MOF-derived porous carbon/graphene composite for sensitive determination of carbendazim
- Source :
- Microchimica Acta. 189
- Publication Year :
- 2022
- Publisher :
- Springer Science and Business Media LLC, 2022.
-
Abstract
- 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 µM 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%. In the present work, Ni-doping nanoporous carbon-graphene composite (G-Ni/C) was prepared by directly pyrolysis of GO/Ni-MOF. The electrochemical sensor based on G-Ni/C /GCE was applied for sensitive determination of carbendazim (CBZ) in pond water, peach, and lemon juices samples.
- Subjects :
- Water
Graphite
Electrochemical Techniques
Porosity
Carbon
Analytical Chemistry
Subjects
Details
- ISSN :
- 14365073 and 00263672
- Volume :
- 189
- Database :
- OpenAIRE
- Journal :
- Microchimica Acta
- Accession number :
- edsair.doi.dedup.....0461fd0a23b9162b261724d2fd659807