A kind of (nh4)2sif6/mpg-c3n4 powder and its preparation method and application
A technology of mpg-c3n4 and powder, applied in the direction of light water/sewage treatment, energy wastewater treatment, etc., can solve the problems of no patents and literature reports, and the work of powder with photocatalytic activity has not been reported, etc., to achieve high degradation The ability of organic pollutants, the effect of increased specific surface area, and high photocatalytic activity
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Embodiment 1
[0029] Step 1: with 50g melamine and 200mL silica sol (containing the SiO that massfraction is 30%) 2 , with a particle size of 12nm) were mixed evenly, heated and stirred at 90°C until the solvent was evaporated to dryness, and a white solid was obtained;
[0030] Step 2: Grind the white solid into a crucible and heat it up to 550°C for 4 hours in a muffle furnace at a heating rate of 2.5°C / min to obtain a yellow powder;
[0031] Step 3: Add 10g of yellow powder to 400mL of NH with a concentration of 4mol / L 4 HF 2 In the aqueous solution, long-time magnetic stirring can remove SiO in the yellow powder 2 , to obtain a mixture;
[0032] Step 4: Wash the mixed solution with deionized water for 18 hours, and control the pH value of the mixed solution to 5.1, then dry the mixed solution at 80° C. for 10 hours to obtain (NH 4 ) 2 SiF 6 / mpg -C 3 N 4 Powder.
Embodiment 2
[0034] Step 1: with 50g melamine and 200mL silica sol (containing the SiO that massfraction is 30%) 2 , with a particle size of 12nm) were mixed evenly, heated and stirred at 90°C until the solvent was evaporated to dryness, and a white solid was obtained;
[0035] Step 2: Grind the white solid into a crucible and heat it up to 550°C for 4 hours in a muffle furnace at a heating rate of 2.5°C / min to obtain a yellow powder;
[0036] Step 3: Add 10g of yellow powder to 400mL of NH with a concentration of 4mol / L 4 HF 2 In the aqueous solution, long-time magnetic stirring can remove SiO in the yellow powder 2 , to obtain a mixture;
[0037] Step 4: wash the mixed solution with deionized water for 12 hours, and control the pH value of the mixed solution to 4.3, then dry the mixed solution at 80° C. for 10 hours to obtain (NH 4 ) 2 SiF 6 / mpg -C 3 N 4 Powder.
Embodiment 3
[0039] Step 1: with 50g melamine and 200mL silica sol (containing the SiO that massfraction is 30%) 2 , with a particle size of 12nm) were mixed evenly, heated and stirred at 90°C until the solvent was evaporated to dryness, and a white solid was obtained;
[0040] Step 2: Grind the white solid into a crucible and heat it up to 550°C for 4 hours in a muffle furnace at a heating rate of 2.5°C / min to obtain a yellow powder;
[0041] Step 3: Add 10g of yellow powder to 400mL of NH with a concentration of 4mol / L 4 HF 2 In the aqueous solution, long-time magnetic stirring can remove SiO in the yellow powder 2 , to obtain a mixture;
[0042] Step 4: wash the mixed solution with deionized water for 6 hours, and control the pH value of the mixed solution to 2.5, then dry the mixed solution at 80° C. for 10 hours to obtain (NH 4 ) 2 SiF 6 / mpg -C 3 N 4 Powder.
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