With phenol as the target molecule

acrylamide as functional monomer

methyl acrylamide as cross-linking agent and azobiisobutyronitrile as initiator

the phenol molecular imprinted polymers were prepared by solution polymerization. Based on self-assembly technology

the adsorption process of polymers on the gold electrode was enhanced by the sensitization of chitosan to prepare phenol molecular blot electrochemical sensors. Scanning electron microscopy results showed the surface of imprinted polymer presented many grooves and many voids. The successful preparation of electrochemical sensor was verified by cyclic voltammetry (CV)and AC impedance (alternating cuncent impedance). By optimizing the experimental conditions

the peak current time was best when the time was 20min. Phenol concentration had a good linear relationship with peak current within the range 6.7×10

-6

~24.6×10

-6

mg/L

and its detection limit was 3.55×10

-9

mg/L. The prepared sensor was used to test the water sample to determine the phenol content

and the effect was remarkable.