Preparation method of silver carbonate compounded silver bromide photocatalyst
A technology of photocatalyst and silver carbonate, applied in physical/chemical process catalysts, chemical instruments and methods, chemical/physical processes, etc., can solve problems such as performance needs to be improved
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Embodiment 1
[0012] Weigh 16mmol silver nitrate, configure it into a 15mmol / L silver nitrate solution, weigh 8mmol sodium carbonate, configure it into a 20mmol / L sodium carbonate solution; mix the above two solutions at a speed of 350 rpm to form a gel The substance was continuously stirred for 3 hours. During the stirring process, sodium carbonate and silver nitrate reacted to generate silver carbonate colloid; the silver carbonate colloid was placed in a semi-permeable membrane bag, washed 3 times with distilled water to remove free ions, and then the silver carbonate colloid was Add the colloid to 60mL of sodium bromide solution with a concentration of 3mol / L, soak for 2 days, form silver bromide nanoparticles on the surface of silver carbonate particles, separate the solid from the liquid, wash the solid twice with deionized water, and dry it at 75°C to prepare A silver carbonate composite silver bromide photocatalyst is obtained.
[0013] Add 0.5 g of the obtained silver carbonate com...
Embodiment 2
[0015] Take by weighing 12mmol silver nitrate, configure it into a 15mmol / L silver nitrate solution, take by weighing 6.6mmol sodium carbonate, configure it into a 20mmol / L sodium carbonate solution; mix the above two solutions at a speed of 400 rpm to form a gel Stir continuously for 4 hours, during the stirring process, sodium carbonate and silver nitrate react to generate silver carbonate colloid; silver carbonate colloid is placed in a semi-permeable membrane bag, washed 4 times with distilled water to remove free ions, and then the carbonic acid colloid Add silver colloid to 80mL sodium bromide solution with a concentration of 4mol / L, soak for 4 days, form silver bromide nanoparticles on the surface of silver carbonate particles, separate solid from liquid, wash solid with deionized water for 3 times, and dry at 105°C. A silver carbonate composite silver bromide photocatalyst is prepared.
[0016] Add 0.5 g of the obtained silver carbonate composite silver bromide photoca...
Embodiment 3
[0018] Take by weighing 14mmol silver nitrate, configure it into a 15mmol / L silver nitrate solution, weigh 7mmol sodium carbonate, configure it into a 20mmol / L sodium carbonate solution; mix the above two solutions at a speed of 400 rpm to form a gel The substance was continuously stirred for 4 hours. During the stirring process, sodium carbonate and silver nitrate reacted to generate silver carbonate colloid; the silver carbonate colloid was placed in a semi-permeable membrane bag, washed 4 times with distilled water to remove free ions, and then the silver carbonate colloid was The colloid was added to 70 mL of sodium bromide solution with a concentration of 4 mol / L, soaked for 3 days, and silver bromide nanoparticles were formed on the surface of silver carbonate particles, separated from solid and liquid, washed with deionized water for 3 times, and dried at 95 ° C to prepare A silver carbonate composite silver bromide photocatalyst is obtained.
[0019] Add 0.5 g of the o...
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