A kind of method and application of preparing dye-boron nitride composite photocatalytic material
A composite photocatalysis and boron nitride technology, applied in chemical instruments and methods, organic compound/hydride/coordination complex catalysts, physical/chemical process catalysts, etc., can solve the problems of undiscovered patents and published documents, etc. To achieve the effect of saving processing costs and easy industrialization
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Embodiment 1
[0028] A rhodamine B-boron nitride composite photocatalytic material, comprising the following steps:
[0029] First, weigh 24 g of urea and 12 g of boron trioxide, that is, the mass ratio of urea and boron trioxide is 2:1, and grind for half an hour to mix them evenly; Raise the temperature to 1100°C at a rate of 1 / min, react at a constant temperature for 4 hours and then cool down to room temperature naturally; take it out and wash it with hydrochloric acid 5 times to wash away the unreacted boron trioxide; put the processed sample in an oven at 105°C and dry it for 12 hours Take it out and grind it to powder to obtain a white powder sample;
[0030] Do crystal diffraction on the above samples, the results are as follows figure 1 As shown, it is the boron nitride crystal diffraction pattern in Example 1 of the present invention. It can be seen from the figure that there are two peaks at 26.7oC and 42.5oC, which are characteristic peaks of boron nitride, and support that the...
Embodiment 2
[0035] A kind of methylene blue-boron nitride composite photocatalytic material, it is made by following steps:
[0036] Weigh 24 g of urea and 12 g of boron trioxide, that is, the mass ratio of urea and boron trioxide is 2:1, and grind for half an hour to mix them evenly; Raise the temperature to 1100°C, react at a constant temperature for 4 hours and then cool down to room temperature naturally; take it out and wash it with hydrochloric acid 5 times to wash away the unreacted boron trioxide; put the processed sample in an oven at 105°C to dry for 12 hours and then take it out. Grind to powder to obtain a white powder sample;
[0037] Take 20 mg of methylene blue dye and configure it as a 20 mg / L methylene blue solution, take 30 mg of boron nitride prepared in the above steps, take 100 mL of methylene blue dye wastewater and place 30 mg in the solution for adsorption for 6 hours to reach adsorption saturation, forming methylene blue - Boron nitride complex, let it stand for ...
Embodiment 3
[0040] A rhodamine B-methylene blue-boron nitride composite photocatalytic material, which is prepared by the following steps:
[0041] Weigh 24 g of urea and 12 g of boron trioxide, that is, the mass ratio of urea and boron trioxide is 2:1, and grind for half an hour to mix them evenly; Raise the temperature to 1100°C, react at a constant temperature for 4 hours and then cool down to room temperature naturally; take it out and wash it with hydrochloric acid 5 times to wash away the unreacted boron trioxide; put the processed sample in an oven at 105°C to dry for 12 hours and then take it out. Grind to powder to obtain a white powder sample;
[0042]Take 20 mg of rhodamine B dye and configure it as a 20 mg / L rhodamine B solution and 20 mg of methylene blue dye as a 20 mg / L methylene blue solution, take 30 mg of boron nitride prepared in the above steps, and take rhodamine Mix 50 mL each of B and methylene blue dye wastewater to form a rhodamine B-methylene blue mixed solution...
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