A kind of carbon nitride-carbon doped mesoporous titanium dioxide composite photocatalyst and preparation method thereof
A mesoporous titanium dioxide, carbon nitride technology, applied in physical/chemical process catalysts, chemical instruments and methods, chemical/physical processes, etc., to achieve uniform morphology, improve photocatalytic performance, and large specific surface area.
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Embodiment 1
[0030] 1) Add 4 mL of glacial acetic acid to 40 mL of butyl titanate ethanol solution with a concentration of 0.86 mol / L, stir for 0.2 h, add 0.2 g of CTAB (cetyltrimethylammonium bromide) and stir for 0.2 h to obtain Mixture A.
[0031] 2) Mix 2mL of glacial acetic acid, 3mL of deionized water and 4mL of absolute ethanol evenly to obtain the mixed solution B.
[0032] 3) Under stirring, slowly drop the mixed solution B into the mixed solution A;
[0033] 4) After dropping, continue to stir for 2 hours, then age at room temperature for 2 hours to form a transparent sol.
[0034] 5) The transparent sol is heated in a water bath at 60°C to become a gel, and then dried at 70°C to obtain a xerogel.
[0035] 6) Put 1g of urea and 1g of xerogel into an agate mortar and grind for 30min;
[0036] 7) Pour the ground raw materials into a crucible, cover the crucible and put it into a high-temperature furnace, place a heavy object on the crucible cover, raise the temperature to a calc...
Embodiment 2
[0043] 1) Add glacial acetic acid to 0.86mol / L butyl titanate ethanol solution and stir for 0.1h, then add CTAB and stir for 0.5h to obtain mixed solution A; the ratio of butyl titanate ethanol solution to glacial acetic acid is 40mL: 10mL ; The ratio of butyl titanate ethanol solution to CTAB is 40mL: 3g;
[0044] 2) Mix glacial acetic acid, deionized water and absolute ethanol evenly to obtain a mixed solution B; wherein, the volume ratio of glacial acetic acid, deionized water and absolute ethanol is 2:1:5;
[0045] 3) Under stirring, drop the mixed solution B into the mixed solution A dropwise; after dropping, continue to stir for 1 hour, and age at room temperature for 1 hour to form a transparent sol;
[0046] 4) heating the transparent sol in a water bath at 80°C to form a gel, and then drying at 50°C to obtain a xerogel;
[0047] 5) Grind urea and xerogel and pour them into a crucible, cover the crucible and put it into a high-temperature furnace, place a heavy object...
Embodiment 3
[0049] 1) Add glacial acetic acid to 0.86mol / L butyl titanate ethanol solution and stir for 0.6h, then add CTAB and stir for 0.8h to obtain mixed solution A; the ratio of butyl titanate ethanol solution to glacial acetic acid is 40mL: 6mL; the ratio of butyl titanate ethanol solution to CTAB is 40mL: 1g;
[0050] 2) Mix glacial acetic acid, deionized water and absolute ethanol evenly to obtain mixed liquid B; wherein, the volume ratio of glacial acetic acid, deionized water and absolute ethanol is 2:3:1;
[0051] 3) Under stirring, drop the mixed solution B into the mixed solution A dropwise; after dropping, continue to stir for 12 hours, and age at room temperature for 10 hours to form a transparent sol;
[0052] 4) heating the transparent sol in a water bath at 50°C to form a gel, and drying at 100°C to obtain a dry gel;
[0053] 5) Grind urea and xerogel and pour them into a crucible, cover the crucible and put it into a high-temperature furnace, place a heavy object on th...
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