A kind of zirconia modified graphitic carbon nitride photocatalyst and preparation method thereof
A carbon nitride photocatalyst technology, applied in the field of materials, can solve the problems of large band gap, low photocatalytic activity, and weak light absorption intensity of zirconia, and achieve high photocatalytic stability, high photocatalytic activity, and easy availability of raw materials Effect
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Embodiment 1
[0019] Take 0.3 g of zirconium powder (Sanhe Haite Technology Co., Ltd.) in a plastic beaker, add dropwise 2 mL of hydrofluoric acid (concentration: 40%) and keep stirring until it is completely dissolved, then add dropwise 4 mL of hydrofluoric acid with a concentration of 2 mol / L Sodium solution until the white precipitate no longer occurs. The solution was filtered and washed several times until the pH was equal to 7, and the white zirconium hydroxide precipitate was dried in an oven at 80°C for 24 hours; 30 grams of urea (Tianjin Kaitong Chemical Reagent Co., Ltd.) and 30 mg of zirconium hydroxide were poured into Put it into an agate mortar, stir, grind, and mix for 10 minutes; put the above mixture into an alumina porcelain ark, then place the porcelain ark in a muffle furnace for heat treatment, and heat up from room temperature at a rate of 10 degrees per minute to 500 degrees, and keep it warm for 2 hours, and then cool with the furnace to make a photocatalyst, pour th...
Embodiment 2
[0024] Take 0.3 g of zirconium powder (Sanhe Haite Technology Co., Ltd.) in a plastic beaker, add 2 mL of hydrofluoric acid (concentration: 40%) dropwise and keep stirring until completely dissolved, then add dropwise 4 mL of hydrofluoric acid with a concentration of 2 mol / liter. Sodium solution until the white precipitate no longer occurs. The solution was filtered and washed several times until the pH was equal to 7, and the white zirconium hydroxide precipitate was dried in an oven at 80°C for 24 hours; 30 g of urea (Tianjin Kaitong Chemical Reagent Co., Ltd.) and 10 mg of zirconium hydroxide were poured Into an agate mortar, stir well, grind, and mix for 10 minutes. Put the above mixture into an alumina porcelain ark, then place the porcelain ark in a muffle furnace for heat treatment, increase the temperature from room temperature to 450 degrees at a rate of 2 degrees per minute, keep it warm for 1 hour, and then cool with the furnace to produce Obtaining a photocatalyst...
Embodiment 3
[0027] Take 0.3 g of zirconium powder (Sanhe Haite Technology Co., Ltd.) in a plastic beaker, add dropwise 2 mL of hydrofluoric acid (concentration: 40%) and keep stirring until it is completely dissolved, then add dropwise 4 mL of hydrofluoric acid with a concentration of 2 mol / L Sodium solution until the white precipitate no longer occurs. The solution was filtered and washed several times until the pH was equal to 7, and the white zirconium hydroxide precipitate was dried in an oven at 80°C for 24 hours; 30 g of urea (Tianjin Kaitong Chemical Reagent Co., Ltd.) and 15 mg of zirconium hydroxide were poured Put it into an agate mortar, fully stir, grind, and mix for 10 minutes; put the above mixture into an alumina porcelain ark, then place the porcelain ark in a muffle furnace for heat treatment, and increase the temperature from room temperature at a rate of 5 degrees per minute to 500 degrees, and keep it warm for 2 hours, and then cool with the furnace to make a photocata...
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