Abstract: A novel electrochemical sensor was presented for the determination of 4-nonyl-phenol (NP), which was constructed by molecularly imprinted polymer (MIP), nitrogen-doped graphene nanoribbons (NGNRs) and ionic liquid (IL). The NGNRs were prepared by unzipping multiwalled carbon nanotubes, followed by hydrothermal treatment with ammonium-NaOH solution. The MIP was prepared by electropolymerization at the NGNRs-IL composite film modified electrode, using NP as template, o-phenylenediamine and o-toluidine as copolymerization monomers. The resulting sensor MIP/NGNRs-IL/GCE showed good performance. Under the optimized conditions, the peak current was linear to NP concentration in the range from 0.04 to 6 μM. The sensitivity and detection limit were 3.4 μA/μM and 8 nM (S/N = 3), respectively. The electrochemical sensor was applied to the determination of NP in real samples and satisfactory results were obtained
Template and target information: 4-nonyl-phenol
Author keywords: 4-nonyl-phenol, molecularly imprinted polymer, nitrogen-doped graphene nanoribbons, Ionic liquid, electropolymerization