Electrochemical determination of 4-nitrophenol at polycarbazole/N-doped graphene modified glassy carbon electrode

- Polycarbazole/N-doping graphene (PCZ/N-GE) composite was fabricated.
- The PCZ/N-GE composite shows good electrocatalytic activity to 4-nitrophenol.
- PCZ/N-GE modified electrode was used for determination of 4-nitrophenol.
- The proposed sensor exhibits good sensitivity, stability and reproducibility.