Method for preparing electrostatic spinning immobilized laccase electrode
A technology of immobilizing laccase and electrospinning is applied in the field of electrochemical detection to achieve the effects of good thermal stability, low cost and excellent mechanical properties
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Embodiment 1
[0031] 1) The surface of the glassy carbon electrode is rough ground and finely ground with emery paper, and then α-Al with a particle size of 0.05 μm 2 o 3 The powder is polished on the flat glass. After each polishing, the surface dirt is washed off first, and then moved into an ultrasonic water bath for cleaning, each time for 2 to 3 minutes, and repeated three times until it is cleaned. Finally, ethanol, V 硝酸 :V 水Wash thoroughly with 1:1 nitric acid and water to obtain a fresh electrode surface, and then place it in 0.2mol / L H 2 SO 4 Scanned by cyclic voltammetry until stable;
[0032] 2) Dissolve polyvinyl alcohol particles with a molecular weight of 100,000 and block copolymer F108 in ultrapure water, heat and stir until clarification after uniform mixing, wherein the mass fraction of polyvinyl alcohol is 6%, and the mass fraction of block copolymer F108 The mass fraction is 0.3%;
[0033] 3) Dissolve 1g of chloroauric acid in fresh ultrapure water at one time, and...
Embodiment 2
[0038] The 2,4-dichlorophenol solution in Example 1 was replaced with 80 μmol / L 4-chlorophenol solution, and other conditions were the same as in Example 1. Experiments showed that the laccase electrode had a good response to 4-chlorophenol.
Embodiment 3
[0040] The 2,4-dichlorophenol solution in Example 1 was replaced by 50 μmol / L 2-chlorophenol solution, and other conditions were the same as in Example 1. Experiments showed that the laccase electrode had a good response to 2-chlorophenol.
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