A preparation method of carbon fiber-loaded nano-titanium dioxide photocatalytic composite material
A technology of nano-titanium dioxide and composite materials, which is applied in the field of preparation of carbon fiber-supported nano-titanium dioxide photocatalytic composite materials, can solve problems such as easy aggregation, easy deactivation of nano-titanium dioxide, and difficulty in separation and recovery, and achieve increased specific surface area, good synergy, The effect of a short reaction cycle
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Embodiment 1
[0015] This example illustrates a method for preparing a carbon fiber-supported nano-titanium dioxide photocatalytic composite material provided by the present invention.
[0016] Step 1: Immerse 5g of carbon fiber in 100mL of hydrogen peroxide with a mass percent solubility of 30%, ultrasonically treat it at room temperature for 30 minutes, and then react in an oil bath at 60°C for 3 hours. After the reaction, the product is washed 5 times with deionized water , placed in a vacuum drying oven at 110°C for 24 hours to obtain oxidized carbon fibers;
[0017] Step 2: Add 5g of oxidized carbon fiber to 100mL of a mixed solution of ethanol and vinyltrimethoxysilane with a volume ratio of 97:3, adjust the pH value of the solution to 6 with acetic acid, ultrasonically treat for 30 minutes at room temperature, and then The reaction was carried out in an oil bath at ℃ for 8 hours. After the reaction, the product was washed 5 times with a mixed solution of ethanol and deionized water, ...
Embodiment 2
[0021] This example illustrates a method for preparing a carbon fiber-supported nano-titanium dioxide photocatalytic composite material provided by the present invention.
[0022] Step 1: Immerse 5g of carbon fiber in 150mL of hydrogen peroxide with a mass percent solubility of 30%, ultrasonically treat it for 45 minutes at room temperature, and then react in an oil bath at 80°C for 2 hours. After the reaction, the product is washed 5 times with deionized water , placed in a vacuum drying oven at 110°C for 24 hours to obtain oxidized carbon fibers;
[0023] Step 2: Add 5g of oxidized carbon fiber to 150mL of a mixed solution of ethanol and methacryloxypropyltrimethoxysilane with a volume ratio of 97:3, adjust the pH of the solution to 5 with acetic acid, and ultrasonicate at room temperature 45 minutes, and then reacted for 6 hours under 80°C oil bath conditions. After the reaction, the product was washed 5 times with a mixed solution of ethanol and deionized water, and dried ...
Embodiment 3
[0027] This example illustrates a method for preparing a carbon fiber-supported nano-titanium dioxide photocatalytic composite material provided by the present invention.
[0028] Step 1: Immerse 5g of carbon fiber in 200mL of hydrogen peroxide with a mass percent solubility of 30%, ultrasonically treat it at room temperature for 60 minutes, and then react in an oil bath at 90°C for 1 hour. After the reaction, the product is washed 5 times with deionized water , placed in a vacuum drying oven at 110°C for 24 hours to obtain oxidized carbon fibers;
[0029] Step 2: Add 5g of oxidized carbon fiber to 200mL of a mixed solution of ethanol and methylvinyldiethoxysilane with a volume ratio of 97:3, adjust the pH value of the solution to 4 with acetic acid, and ultrasonically treat for 60 minutes at room temperature. Then react in an oil bath at 90°C for 4 hours. After the reaction, the product is washed 5 times with a mixed solution of ethanol and deionized water, and dried in a vac...
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Abstract
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