Preparation method of electrochemical sensor for uranium detection
A sensor, electrochemical technology, applied in the direction of electrochemical variables of materials, scientific instruments, instruments, etc., can solve the problems of complex sample processing and analysis process, inability to meet uranium analysis and measurement, large manual workload, etc., and achieve excellent catalytic performance. , The effect of high production efficiency and low cost
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[0031] Step 1. Dissolve 45 mg of graphene oxide in 45 mL of distilled water, ultrasonically treat it into a colloid, add 2.25 g of glucose and stir until completely dissolved; slowly add 1.34 mol / L ammonia water to a volume of 30 mL, 0.06 mol / L AgNO 3 In the solution, stir while adding until the precipitate dissolves and the solution is clear; mix the two solutions, stir at 25°C for 12 hours, then let stand for 12 hours, centrifuge at high speed, wash 4 times with water, and dry the product in an oven at 60°C to obtain oxidized Graphene-silver nanoparticles.
[0032] Step 2. Dissolve 5 mg of graphene oxide-silver nanoparticles in 10 mL of distilled water to obtain 0.5 mg / mL graphene oxide-silver nanoparticles colloid.
[0033] Step 3. take by weighing 10mg chitosan and be dissolved in the acetic acid solution of 10mL 0.1mol / L to obtain 0.1% chitosan solution.
[0034] Step 4. Mix 0.5mg / mL graphene oxide-silver nanoparticle colloid with 0.1% chitosan solution evenly to obtain ...
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