Composite aerogel photocatalyst for recovering titanium dioxide/silicon dioxide
A composite aerogel, photocatalyst technology, applied in chemical instruments and methods, physical/chemical process catalysts, chemical/physical processes, etc. It can achieve the effect of easy recycling, high photocatalytic activity and uniform pore distribution.
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[0036] Example one
[0037] (1) Take out 5ml of ethyl orthosilicate and pour it into the beaker, then pour 6.5ml of absolute ethanol into the beaker, stir while pouring, then add 1.2ml of deionized water, and finally adjust the pH of the mixed solution with nitric acid Is 0.6. Let the above solution be hydrolyzed at a constant temperature of 80°C for 30 minutes, and then stand still to continue the hydrolysis.
[0038] (2) Mix 23ml of butyl titanate and 34.5ml of absolute ethanol uniformly, and add 1.61ml of formamide dropwise, adjust the pH of the solution to 1 with nitric acid to obtain solution 1; combine 23ml of absolute ethanol and 2.8ml of ethanol Deionized water was mixed uniformly in a certain proportion, and the pH of the solution was adjusted to 0.6 with nitric acid to obtain solution 2. Under the strong stirring of a magnetic stirrer, the solution 2 was slowly added dropwise to solution 1 with a dropper at room temperature at a speed of about 90 Drops / min, continue to s...
Example Embodiment
[0040] Example two
[0041] (1) Take out 2.52ml of ethyl orthosilicate and pour it into the beaker, then pour 3.28ml of absolute ethanol into the beaker, stir while pouring, then add 0.6ml of deionized water, and finally adjust the pH of the mixed solution with nitric acid The value is 0.8. Let the above solution be hydrolyzed at a constant temperature of 80°C for 40 minutes, and then stand still to continue the hydrolysis.
[0042] (2) Mix 26ml of butyl titanate and 39.5ml of absolute ethanol uniformly, and add 1.56ml of formamide dropwise, adjust the pH of the solution to 0.8 with nitric acid to obtain solution 1; combine 26ml of absolute ethanol and 3.25ml of ethanol Mix deionized water uniformly in a certain proportion, and adjust the pH of the solution to 0.8 with nitric acid to obtain solution 2. Under the strong stirring of a magnetic stirrer, slowly drop solution 2 into solution 1 with a dropper at room temperature at a speed of about 90 Drops / min, continue to stir for 1~2...
Example Embodiment
[0044] Example three
[0045] (1) Take out 10ml of ethyl orthosilicate and pour it into the beaker, then pour 13ml of absolute ethanol into the beaker, stir while pouring, then add 2.4ml of deionized water, and finally adjust the pH of the mixed solution with nitric acid 0.6. Let the above solution be hydrolyzed at a constant temperature of 80°C for 40 minutes, and then stand still to continue the hydrolysis.
[0046] (2) Mix 26ml of butyl titanate and 39.5ml of absolute ethanol uniformly, and add 1.56ml of formamide dropwise, adjust the pH of the solution to 0.6 with nitric acid, to obtain solution 1; combine 26ml of absolute ethanol and 3.25ml of ethanol Mix deionized water uniformly in a certain proportion, and adjust the pH of the solution to 1.0 with nitric acid to obtain solution 2. Under the strong stirring of a magnetic stirrer, slowly drop solution 2 into solution 1 with a dropper at room temperature at a speed of about 90 Drops / min, continue to stir for 1~2min to make th...
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