Method for preparing boron-doped diamond film electrode for detecting dopamine
A technology of boron-doped diamond and thin-film electrodes, which is applied in the field of preparation of boron-doped diamond thin-film electrodes, can solve the problems of unfavorable implantation electrodes, shape, size limitation, unfavorable flexibility and sensitivity, etc., and achieve improved sensitivity and repeated detection effects Good, selective effect
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[0044] A method for preparing a boron-doped diamond film electrode for detecting dopamine, using a pointed tungsten wire as a substrate, depositing a boron-doped diamond film on the tungsten wire, and aminating the surface of the diamond film, and then depositing a boron-doped diamond film on the boron-doped diamond film The tyrosinase modification layer is directly prepared, and the tungsten wire is connected to the wire through the silver paste. The specific preparation method is as follows.
[0045] 1. Making the tip tungsten wire base structure:
[0046] 1) Grind the 8mm tungsten wire with 800 grit sandpaper until the surface is smooth, and ultrasonically clean it in acetone solution for 5 minutes;
[0047] 2) Place the tungsten wire in the mixed solution of HF acid and concentrated nitric acid (V / V=1:1), place the tungsten wire vertically in the air, avoid contact with the container wall, and keep it for 10 minutes;
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