a tio 2 Preparation method of quantum dot/carbon nitride/attapulgite composite material and its application in photocathode anticorrosion
A technology of attapulgite and composite materials, applied in anti-corrosion coatings, coatings, etc., can solve the problems of easy recombination of photogenerated electrons and holes, low utilization rate of visible light, and low utilization rate of quantum, so as to improve electron transmission performance and visible light Responsiveness, inhibition of recombination, effect of increasing effective area
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Embodiment 1
[0023] 1. Add 5g of cyclohexane, 2g of oleic acid, 2g of tetrabutyl titanate and 1g of oleylamine into a three-necked flask in sequence, stir it magnetically for 0.5h, then transfer the solution to a Teflon lining, and heat it in water at 140°C for 12h. After cooling to room temperature, TiO 2 Transparent brown sol of quantum dots.
[0024] 2. Dissolve 1g melamine in 50gCCl 4 , under ultrasonic treatment, disperse 1g of attapulgite into the above solution, ultrasonic for 1h, then pour the suspension into a Teflon container, and conduct a hydrothermal reaction at 180°C for 12h, after cooling to room temperature, filter with suction, and filter the cake through After washing, it was dried at 60°C and calcined at 500°C for 1 hour in a nitrogen atmosphere to obtain the attapulgite / carbon nitride composite material.
[0025] 3. Add 100mg of attapulgite / carbon nitride composite material and 10g of absolute ethanol into a three-necked flask, stir for 1h, and then add 5mg of TiO 2 ...
Embodiment 2
[0027] 1. Add 2.5g of cyclohexane, 1g of oleic acid, 1g of titanium tetrachloride and 0.5g of oleylamine into a three-necked flask in sequence, stir it magnetically for 0.75h, then transfer the solution to a Teflon lining, and heat it in water at 160°C for 24h , after cooling to room temperature, TiO 2 Transparent brown sol of quantum dots.
[0028] 2. Dissolve 2g dicyandiamide in 100gCCl 4 , under ultrasonic treatment, disperse 1g of attapulgite into the above solution, ultrasonic for 1h, then pour the suspension into a Teflon container, and conduct a hydrothermal reaction at 200°C for 24h, after cooling to room temperature, filter with suction, and filter cake through After washing, it was dried at 70°C and calcined at 550°C for 2 hours in a nitrogen atmosphere to obtain the attapulgite / carbon nitride composite material.
[0029] 3. Add 200mg of attapulgite / carbon nitride composite material and 20g of absolute ethanol into a three-necked flask, stir for 1.5h, and then add ...
Embodiment 3
[0031] 1. Add 4.69g of cyclohexane, 1.88g of oleic acid, 1.5g of tetraisopropyl titanate and 0.93g of oleylamine into a three-necked flask in turn, stir for 1 hour with magnetic force, then transfer the solution to a Teflon liner, and store at 180°C Under water heating for 36h, after cooling to room temperature, TiO 2 Transparent brown sol of quantum dots.
[0032] 2. Dissolve 2.5g urea in 125gCCl 4 , under ultrasonic treatment, disperse 0.83g attapulgite into the above solution, ultrasonicate for 2h, then pour the suspension into a Teflon container, and conduct a hydrothermal reaction at 220°C for 36h, after cooling to room temperature, suction filter, and filter cake After washing, it was dried at 80°C and calcined at 600°C for 3 hours in a nitrogen atmosphere to obtain the attapulgite / carbon nitride composite material.
[0033]3. Add 150mg of attapulgite / carbon nitride composite material and 15g of absolute ethanol into a three-necked flask, stir for 2h, and then add 35.7...
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