Preparation method and application of supported double-doped modified titanium dioxide photocatalyst
A titanium dioxide and photocatalyst technology, applied in the direction of physical/chemical process catalysts, chemical instruments and methods, chemical/physical processes, etc., can solve the problems of poor photocatalytic effect of photocatalysts, achieve improved photocatalytic effect, lower recombination probability, Inhibit the effect of compounding
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specific Embodiment approach 1
[0023] Specific embodiment one: the preparation method of the supported double-doped modified titanium dioxide photocatalyst in this embodiment is carried out according to the following steps:
[0024] 1. Under the conditions of 25-35°C constant temperature water bath and magnetic stirring, slowly add tetratincture of titanate into absolute ethanol, and continue magnetic stirring for 10-50 minutes to obtain a light yellow mixed solution A;
[0025] 2. Mix absolute ethanol, deionized water and anhydrous acetic acid to obtain a mixed solution, add copper nitrate and urea to the mixed solution, mix well, adjust the pH of the mixed solution to 1-3 with concentrated nitric acid, and obtain solution B;
[0026] 3. Slowly add solution B to solution A in a constant temperature water bath at 25-35°C and magnetic stirring, and continue magnetic stirring for 40-80 minutes to obtain solution C;
[0027] 4. Seal the solution C and let it stand for 2-4 hours, and then use the dipping and pu...
specific Embodiment approach 2
[0032] Embodiment 2: The difference between this embodiment and Embodiment 1 is that the volume ratio of absolute ethanol and tetratincture of titanate in Step 1 is (28-252): (6-54).
specific Embodiment approach 3
[0033] Specific embodiment three: the difference between this embodiment and specific embodiment one or two is: the volume ratio of absolute ethanol, deionized water and anhydrous acetic acid described in step two is (14-126): (2-18): (4-36).
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