▎ 摘　　要

NOVELTY - Preparing ethanol sensor electrode based on graphene/zinc oxide/nickel foam nanocomposites comprises e.g. dispersing graphene powder in dimethylformamide, sonicating, then adjusting the viscosity, continuing ultrasonic dispersing, then adding nano-zinc oxide powder into the solution, ultrasonic dispersing to obtain graphene/zinc oxide nanocomposite dispersion, placing square foam nickel paste with copper paste one end of the copper wire bonded to the electrode in a dry oven, immersing in graphene/zinc oxide nanocomposite dispersion and ultrasonic dispersing. USE - The method is useful for preparing ethanol sensor electrode based on graphene/zinc oxide/nickel foam nanocomposites (claimed). ADVANTAGE - The ethanol sensor electrode has excellent linearity and stability, exhibits excellent linearity, the sensitivity is 1.018 mA mmoll-1cm-2, and linear correlation factor is 0.989, it has good response recovery time. DETAILED DESCRIPTION - Preparing ethanol sensor electrode based on graphene/zinc oxide/nickel foam nanocomposites comprises (i) dispersing 10 mg graphene powder in 100 ml dimethylformamide, sonicating for 1 hours, and then adjusting the viscosity of the EC-GNP solution by adding ethylene glycol and glycerol, continuing ultrasonic dispersion for 1 hours, where the solvent ratio is dimethylformamide, ethylene glycol and glycerol is 50:45:5 to obtain graphene dispersion, then adding 0.02 g nano-zinc oxide powder into the solution, ultrasonic dispersing for 1 hours to obtain graphene/zinc oxide nanocomposite dispersion, (ii) taking 1x 1 cm of square foam nickel paste with copper paste one end of the copper wire bonded to the electrode, placing in a dry oven, keeping the temperature to 60 degrees C and the time is 30 minutes, then adding E-44 epoxy resin and polyamide in a ratio of 1:1 into coated bare wire and silver paste, play a protective role, placing in a high temperature blast drying oven at 80 degrees C for 60 minutes, and (iii) ultrasonic cleaning the electrodes is made with deionized water, ethanol and deionized water for 10 minutes, then adding into the drying oven for 30 minutes, reacting at 60 degrees C, immersing the electrode in graphene/zinc oxide nanocomposite dispersion, ultrasonic dispersing for 5 minutes, removing the electrode, adding into the oven, reacting at 60 degrees C for 2 hours to obtain final product.