Method for detecting concentration of hydrogen peroxide in solution
A technology of hydrogen peroxide concentration and hydrogen peroxide, which is applied in measurement devices, material electrochemical variables, material analysis by electromagnetic means, etc., can solve the problems of inability to meet rapid detection, large consumption of reagents, and long analysis time, etc. Achieve good catalytic effect, simple and convenient detection process, and improve sensitivity
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Embodiment 1
[0028] The invention provides a method for detecting the concentration of hydrogen peroxide in a solution, comprising:
[0029] Step 1. Use 0.5μm, 0.3μm and 0.05μm α-A1 in sequence 2 o 3 Grind the surface of the glassy carbon electrode into a mirror surface with powder, rinse the surface of the glassy carbon electrode with ultrapure water, and then place it in ultrapure water and ethanol for 10 minutes of ultrasonication. After the ultrasonication is completed, wash it with ultrapure water and dry it at room temperature. Obtain a pretreated glassy carbon electrode; take 1ml of aminated reduced graphene oxide with a concentration of 0.5 mg / ml and ultrasonically treat it for 5 minutes, pipette 5 μL of aminated reduced graphene oxide that has been ultrasonically treated with a pipette gun, and drop it on the pretreated Treat the surface of the glassy carbon electrode, place it in a GJ-1A type infrared rapid drying oven to dry for 20 minutes, take it out, and cool it to room temp...
Embodiment 2
[0043] The invention provides a method for detecting the concentration of hydrogen peroxide in a solution, comprising:
[0044] Step 1. Use 0.5μm, 0.3μm and 0.05μm α-A1 in sequence 2 o 3 Grind the surface of the glassy carbon electrode into a mirror surface with powder, rinse the surface of the glassy carbon electrode with ultrapure water, and then place it in ultrapure water and ethanol for 10 minutes of ultrasonication. After the ultrasonication is completed, wash it with ultrapure water and dry it at room temperature. Obtain a pretreated glassy carbon electrode; use a pipette gun to drop 5 μL of cerium / silicon dioxide dispersion solution on the surface of the pretreated glassy carbon electrode, then place it in a GJ-1A infrared rapid drying oven for 20 minutes and take it out. Cooling to room temperature, the preparation method of the cerium / silicon dioxide dispersion liquid is: 0.5gCe(NO3)3.6H2O is dissolved in 100ml deionized water, then add 25g nano-silicon dioxide, aft...
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