Zinc acetate modified activated carbon fiber and titanium dioxide composite material and preparation method thereof
A technology of activated carbon fiber and titanium dioxide, which is applied in the field of environmental engineering, can solve the problems of inability to achieve efficient treatment, reduce specific surface area, low photocatalytic ability, etc., achieve excellent adsorption performance and photocatalytic performance, simple preparation steps, and high-efficiency removal effects.
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[0025] The embodiment of the present invention provides a method for preparing a zinc acetate modified activated carbon fiber and titanium dioxide composite material, which includes the following steps:
[0026] S1 Modification of activated carbon fiber: Soak activated carbon fiber in zinc acetate solution, perform ultrasonic treatment, and then put it in a vacuum drying oven for vacuum impregnation treatment, repeat the ultrasonic treatment and vacuum impregnation treatment, take out the activated carbon fiber impregnated with zinc acetate And dried to obtain zinc acetate modified activated carbon fiber;
[0027] S2 supported titanium dioxide: Add tetrabutyl titanate to a mixture of absolute ethanol and acetic acid, and stir to obtain solution A; mix absolute ethanol, acetic acid and deionized water, and stir to obtain solution B; Next, drop solution B into solution A drop by drop, stir after the addition, and leave to stand at room temperature for aging to obtain a sol of the tit...
Example Embodiment
[0038] Example 1
[0039] (1) Activated carbon fiber pretreatment: cut the activated carbon fiber into small pieces of 2cm×2cm, and soak them in deionized water, and perform boiling treatment to remove impurities. During the boiling treatment, replace the deionized water every 0.5h. After changing the water Re-boil, the total time of boiling treatment is 3h, take out the activated carbon fiber sheet and place it in an oven at 105°C for 24h.
[0040] (2) Modification of activated carbon fiber: Take 10 pretreated activated carbon fiber sheets and soak them in 100 mL of a zinc acetate solution with a concentration of 0.01 mol / L, and perform ultrasonic treatment on both the zinc acetate solution and the activated carbon fiber sheets. Ultrasonic treatment time The time is 10min, the ultrasonic power is 5000Hz, and the zinc acetate solution and the activated carbon fiber sheet are put into the vacuum drying oven for vacuum impregnation. The vacuum impregnation treatment time is 10min, an...
Example Embodiment
[0042] Example 2
[0043] The only difference from Example 1 is that the concentration of the zinc acetate solution is 0.05 mol / L. The other steps are the same as in Example 1.
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