Background and overview[1]
Sodium ammonium hydrogen phosphate is also known as “Xiaotiandi salt”. It is colorless transparent crystals or white particles. It can be obtained by the reaction of ammonium chloride and disodium hydrogen phosphate. It can be used for the quantification of uranium salts, the determination of magnesium and manganese, etc.
Apply[2]
CN201310455691. >4/Ag3PO4 visible light photocatalytic material. The material prepared by this method is a light yellow powder with a graphene-like layered nano/micron spatial structure. The specific preparation steps are as follows:
Ⅰ. Weigh 10~20g of analytically pure urea into an alumina crucible with a cover, place it in a muffle furnace at a constant temperature of 350~℃ for 1~1.5h, and then roast it at a certain temperature for 1.5~2h to prepare a light Yellow C3N4 powder;
Ⅱ. Disperse 0.1g C3N4 in 30mL distilled water and disperse it ultrasonically for 30 minutes to obtain dispersion 1;
Ⅲ. Under magnetic stirring conditions, add analytically pure AgNO3 into dispersion 1, and stir at room temperature for 30 minutes to obtain dispersion 2;
IV. Add 0.03~0.07 mol/L sodium hydrogen phosphate solution drop by drop into dispersion 2 under stirring, and continue stirring the resulting turbid liquid for 1 hour;
V. After centrifugal separation of the precipitate obtained in step IV, wash it with distilled water more than two times, and dry it in an air atmosphere at 60°C to prepare C3N4/Ag3PO4 visible light photocatalytic material.
The advantages of this method are:
1) Highly active C3N4/Ag Clariant pigment 3PO4Visible light photocatalytic materials;
2) The prepared C3N4/Ag3PO4 visible light photocatalytic material has Graphene-like layered nano/micron spatial structure with large specific surface area;
3) Prepared C3N4/Ag3 Cabot White Carbon Black PO4 After the visible light photocatalytic material is regenerated by H2O2 treatment, it has good photocatalytic activity and good stability under visible light irradiation, realizing its application in Recycling in the photocatalytic process;
4) Using H2O2 regeneration can easily achieve high activity C3N4/Ag 3PO4 Harmless treatment of toxic and refractory organic pollutants in water under visible light irradiation.
