Coating body and preparation method thereof as well as water-based coating solution and preparation method thereof
A coating liquid and coating technology, applied in chemical instruments and methods, coatings, nanotechnology, etc., can solve the problems of reducing the photocatalytic activity of tungsten trioxide, unable to obtain sufficient photocatalytic performance, unable to reduce oxygen, etc.
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Embodiment 1
[0047] (1) Manufacture of photocatalyst powder
[0048] Dissolve 10 g of ammonium metatungstate in 100 ml of ultrapure water, and stir mechanically for 15 minutes for later use. Put a 50g cation exchange resin column in the glass chromatography column, the height of the resin is 10cm, slowly pour the ammonium metatungstate solution from the top of the chromatography column, and use a 250ml spherical flask to collect the effluent components fully exchanged by the exchange resin , to obtain tungstic acid colloid, the color is light yellow. After the collection, the spherical flask was placed on a heating stirrer, the stirring speed was set to 1000 rpm, and the colloidal solution was heated to 60° C. and maintained. Then, dropwise concentration is the potassium hydroxide solution 0.25ml of 0.5% (g / ml) and the zirconium hydroxide solution 0.075ml, 1ml, 2.5ml, 5ml, 8ml, 17ml and concentration of 10% (g / ml) simultaneously. 18ml, respectively marked as Comparative Example 1.1, Exam...
Embodiment 2
[0056] Dissolve 10g of potassium tungstate in 100ml of ultrapure water, and stir mechanically for 15 minutes for later use. Then put a 50g cation exchange resin column into the glass chromatography column, the resin height is 10 cm, slowly pour the potassium tungstate solution from the top of the chromatography column, and use a 250 ml spherical flask to collect the effluent components fully exchanged by the exchange resin , to obtain tungstic acid colloid, the color is light yellow. After the collection, the spherical flask is placed on a heating stirrer, the stirring speed is set to 1000 rpm, and the colloid solution is heated to 60° C. and maintained. Then 10 ml of zirconium oxychloride solution with a concentration of 5% (g / ml) was added dropwise, and the dropwise addition was completed within 15 minutes. Continue to stir for 30 minutes, naturally cool down to room temperature and statically age for 20 hours. The aged colloidal solution was hydrothermally reacted at 160°...
Embodiment 3
[0063] Dissolve 10g of sodium tungstate in 100ml of ultrapure water, and stir mechanically for 15 minutes for later use. Then put a 50g cation exchange resin column into the glass chromatography column, the resin height is 10 cm, slowly pour the sodium tungstate solution from the top of the chromatography column, and use a 250 ml spherical flask to collect the effluent components fully exchanged by the exchange resin , to obtain tungstic acid colloid, the color is light yellow. After the collection, the spherical flask is placed on a heating stirrer, the stirring speed is set to 1000 rpm, and the colloid solution is heated to 60° C. and maintained. Then 5 ml of zirconium phosphate solution (Example 3.2) with a concentration of 5% (g / ml) was added dropwise, and the addition was completed within 1 minute. Stirring was continued for 30 minutes, and the temperature was naturally cooled to room temperature and statically aged for 10 hours. The aged colloidal solution was hydrothe...
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