Preparation method of three-dimensional mesoporous titanium dioxide photocatalyst by means of biological template method
A three-dimensional mesoporous, titanium dioxide technology, applied in the direction of titanium dioxide, titanium oxide/hydroxide, etc., can solve problems such as limitations, and achieve the effects of easy control of morphology, good repeatability, and low environmental requirements
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[0017] Example 1:
[0018] 1) First, dissolve 1 gram of rape pollen in 100 ml of ethanol, seal it and place it in a 58℃ water bath with magnetic stirring to hydroxylate the surface of rape pollen, collect it by centrifugation, and wash it 3 times in a cycle. Washed rape pollen is dried at ℃;
[0019] 2) Secondly, prepare 50 ml of ethanol solution of 0.1 mole per liter of butyl titanate as the growth solution, and disperse the washed rape pollen into the growth solution. After the system is sealed, it is placed in a 65°C water bath for magnetic stirring, and then Wash by centrifugation and dry at 60℃ to obtain powder;
[0020] 3) Then, re-disperse the collected powder into the growth solution, place it in a 65°C water bath and stir it magnetically, and then collect it by centrifugation and dry it to obtain a light yellow powder. This cycle is repeated three times;
[0021] 4) Finally, the collected powder is annealed in a muffle furnace at 400°C for 1 hour to obtain a three-dimensiona...
Example Embodiment
[0022] Example 2:
[0023] 1) First, dissolve 1.5 g of rape pollen in 80 ml of ethanol, seal and place it in a 60°C water bath with magnetic stirring to hydroxylate the surface of the rape pollen, collect it by centrifugation, and wash it 4 times in a cycle. Washed rape pollen is dried at ℃;
[0024] 2) Secondly, prepare 60 ml of ethanol solution of 0.15 mole per liter of butyl titanate as the growth solution, and disperse the washed rape pollen into the growth solution. After the system is sealed, it is placed in a 65°C water bath for magnetic stirring, and then Wash by centrifugation and dry at 60℃ to obtain powder;
[0025] 3) Then, re-disperse the collected powder into the growth solution, place it in a 65°C water bath and stir it magnetically, and then collect it by centrifugation and dry it to obtain a light yellow powder, which is repeated four times;
[0026] 4) Finally, the collected powder is annealed in a muffle furnace at 450°C for 2 hours to obtain a three-dimensional me...
Example Embodiment
[0031] Example 3:
[0032] 1) First, dissolve 2 g of rape pollen in 50 ml of ethanol, seal and place it in a 62°C water bath with magnetic stirring to hydroxylate the surface of the rape pollen, collect it by centrifugation, and wash it in cycles 5 times. After the washed pollen is taken out, it will reach 80 Washed rape pollen is dried at ℃;
[0033] 2) Secondly, prepare 60 ml of 0.2 mole per liter of ethanol solution of butyl titanate as the growth solution, and disperse the washed rape pollen into the growth solution. After the system is sealed, it is placed in a 65°C water bath for magnetic stirring, and then Wash by centrifugation and dry at 60℃ to obtain powder;
[0034] 3) Then, re-disperse the collected powder into the growth solution, place it in a 65°C water bath for magnetic stirring, and then collect it by centrifugation and dry it to obtain a light yellow powder, which is cycled three times;
[0035] 4) Finally, the collected powder is annealed in a muffle furnace at 550...
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