Nitrogen-doped anatase/brookite titanium dioxide, and preparation method and application thereof
A titanium dioxide, anatase technology, applied in chemical instruments and methods, physical/chemical process catalysts, inorganic chemistry, etc., can solve the problems of low hydrogen production efficiency, obstacles, poor visible light absorption rate, etc., to achieve excellent results, improve Catalytic performance and good stability
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[0027] In view of this, in a typical embodiment of the present invention, a method for preparing nitrogen-doped anatase / brookite titanium dioxide is provided, the method comprising:
[0028] S1. After uniformly mixing N,N-dimethylformamide (DMF) and methanol solution, add terephthalic acid and continue stirring until the solution is clear;
[0029] S2. Add the aqueous solution to the above mixed solution; then add tetrabutyl titanate therein and keep stirring to obtain a viscous liquid;
[0030] S3, subjecting the viscous liquid obtained in step S2 to high-temperature reaction treatment;
[0031] S4, purifying the product after the high-temperature reaction in step S3 to obtain a white precipitate;
[0032] S5. Calcining the white precipitate obtained in step S4.
[0033] Wherein, in the step S1, the volume-to-mass ratio of N,N-dimethylformamide, methanol and terephthalic acid is 30-60ml:6ml:0.1-1g; preferably 54ml:6ml:0.5g;
[0034] In the step S2, tetrabutyl titanate is a...
Embodiment 1
[0046] A preparation method for nitrogen-doped anatase / brookite titanium dioxide, comprising: 1. Mixing of reagents: take N,N-dimethylformamide (DMF) and 6ml of Mix the methanol solution evenly; 2. After mixing evenly, add 0.5g terephthalic acid under constant stirring and continue stirring until the solution is clear; 3. Use a pipette to measure 5ml of aqueous solution and add it to the above mixed solution; 4. After 2 minutes Use a pipette to measure 1.54ml tetrabutyl titanate and slowly add it into the solution. Observe the solution carefully. At this time, the solution turns slightly yellow; Keep at 200°C for 18 hours; 6. After the reaction is completed, after the cooling is complete, pour the liquid out and centrifuge and wash the white precipitate three times with DMF and methanol; 7. After fully washing, put the remaining white precipitate into a drum at 60°C Dry overnight in an air dryer to obtain a solid white precipitate; 8. Put the white precipitate in a porcelain b...
Embodiment 2
[0053] A preparation method for nitrogen-doped anatase / brookite titanium dioxide, comprising: 1. Mixing of reagents: take N, N-dimethylformamide (DMF) and 6ml of Mix the methanol solution evenly; 2. After mixing evenly, add 0.5g terephthalic acid under continuous stirring and continue stirring until the solution is clear; 3. Use a pipette to measure 5ml of aqueous solution and add it to the above mixed solution; 4. After 1 min Use a pipette gun to measure 2ml of tetrabutyl titanate and slowly add it to the solution, carefully observe the change of the solution, and the solution turns slightly yellow at this time; 5. After stirring continuously for 1 hour, transfer the viscous liquid into a 100ml polyvinyl chloride reaction kettle, oven 200 Keep at ℃ for 18 hours; 6. After the reaction is completed, after the cooling is complete, pour the liquid out and centrifuge and wash the white precipitate three times with DMF and methanol respectively; 7. After fully washing, put the remai...
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