Carbon dot/carbon nitride/titanium dioxide composite material as well as preparation method and application of the composite material
A technology of titanium dioxide and composite materials, applied in chemical instruments and methods, physical/chemical process catalysts, inorganic chemistry, etc., can solve problems such as ineffective effects, achieve enhanced migration, enhanced photocatalytic activity, and improved photocatalytic hydrogen production active effect
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[0028] Example 1:
[0029] A carbon dots / carbon nitride / titanium dioxide (C-dots / g-C 3 N 4 / TiO 2 ) The preparation method of composite material, comprises the steps:
[0030] (1) Titanium dioxide (TiO 2 ) Preparation of nanosheets: First, add 25ml of tetrabutyltitanate (TBT) and 3ml of hydrofluoric acid into a polytetrafluoroethylene reaction kettle, stir and mix evenly, then place the reaction kettle in an oven and heat to 180°C, The holding time is 24h. After the reaction is completed, the reaction kettle is cooled to room temperature. After that, the obtained product is washed with 1M sodium hydroxide to neutrality, and then washed with water and ethanol for three times respectively. Finally, the product is dried to obtain titanium dioxide (TiO2). 2 )Nanosheets;
[0031] (2) Preparation of carbon nitride (g-C 3 N 4 ): First, weigh 1.2g of urea and 2.5g of melamine in a molar ratio of 1:1, grind and mix them evenly in a mortar, then transfer the mixture into a semi-c...
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[0034] Example 2
[0035] A carbon dots / carbon nitride / titanium dioxide (C-dots / g-C 3 N 4 / TiO 2 ) The preparation method of composite material, comprises the steps:
[0036] (1) Titanium dioxide (TiO 2 ) Preparation of nanosheets: First, add 25ml of tetrabutyltitanate (TBT) and 3ml of hydrofluoric acid into a polytetrafluoroethylene reaction kettle, stir and mix evenly, then place the reaction kettle in an oven and heat to 180°C, The holding time is 24h. After the reaction is completed, the reaction kettle is cooled to room temperature. After that, the obtained product is washed with 1M sodium hydroxide to neutrality, and then washed with water and ethanol for three times respectively. Finally, the product is dried to obtain titanium dioxide (TiO2). 2 )Nanosheets;
[0037] (2) Preparation of carbon nitride (g-C 3 N 4 ): First, weigh 1.2g of urea and 2.5g of melamine in a molar ratio of 1:1, grind and mix them evenly in a mortar, then transfer the mixture into a semi-cl...
Example Embodiment
[0040] Example 3
[0041] A carbon dots / carbon nitride / titanium dioxide (C-dots / g-C 3 N 4 / TiO 2 ) The preparation method of composite material, comprises the steps:
[0042] (1) Titanium dioxide (TiO 2 ) Preparation of nanosheets: First, add 25ml of tetrabutyltitanate (TBT) and 3ml of hydrofluoric acid into a polytetrafluoroethylene reaction kettle, stir and mix evenly, then place the reaction kettle in an oven and heat to 180°C, The holding time is 24h. After the reaction is completed, the reaction kettle is cooled to room temperature. After that, the obtained product is washed with 1M sodium hydroxide to neutrality, and then washed with water and ethanol for three times respectively. Finally, the product is dried to obtain titanium dioxide (TiO2). 2 )Nanosheets;
[0043] (2) Preparation of carbon nitride (g-C 3 N 4 ): First, weigh 1.2g of urea and 2.5g of melamine in a molar ratio of 1:1, grind and mix them evenly in a mortar, then transfer the mixture into a semi-cl...
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