Preparation method and application of silver phosphate/tungsten trioxide core-shell nano photocatalytic composite material
A technology of tungsten trioxide and composite materials, applied in the field of photocatalysis, can solve the problems of rare antibiotics, and achieve the effects of good sample stability, increased surface contact area, and uniform morphology
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Embodiment 1
[0033] Mix and stir 20ml of 0.15M sodium tungstate solution, 20ml of 0.5M sodium chloride solution, and 4ml of 3mol / L hydrochloric acid solution to form a uniform solution A, then transfer solution A to an autoclave and heat to 180°C, keep warm for 24 hours, after the reaction is completed, centrifuge and dry and collect the precipitate to obtain tungsten trioxide;
[0034] Dissolve 5 mg of tungsten trioxide in 50 ml of deionized water, and sonicate for 1 hour to obtain a tungsten trioxide solution (solution B); add 15 ml of 0.15 mol / L silver nitrate solution to solution B, and stir for 6 hours in the dark to obtain solution C; Add 5ml of 0.15mol / L disodium hydrogen phosphate dropwise to solution C, continue stirring in the dark for 3 hours, then centrifuge and dry at 70°C for 6 hours in a vacuum state to obtain silver phosphate / tungsten trioxide core-shell nanophotocatalytic composite Material. The resulting product was labeled APW-2.
Embodiment 2
[0036] Mix and stir 20ml of 0.15M sodium tungstate solution, 20ml of 0.5M sodium chloride solution, and 4ml of 3mol / L hydrochloric acid solution to form a uniform solution A, then transfer solution A to an autoclave and heat to 180°C, keep warm for 24 hours, after the reaction is completed, centrifuge and dry and collect the precipitate to obtain tungsten trioxide;
[0037] Dissolve 12.5 mg of tungsten trioxide in 50 ml of deionized water, and sonicate for 1 hour to obtain a tungsten trioxide solution (solution B); add 15 ml of 0.15 mol / L silver nitrate solution to solution B, and stir for 12 hours in the dark to obtain solution C ; Add 5ml of 0.15mol / L disodium hydrogen phosphate dropwise to solution C, continue to stir in the dark for 6h, then centrifuge and dry at 70°C for 6h in a vacuum state to obtain silver phosphate / tungsten trioxide core-shell nanophotocatalyst composite material. The resulting product was labeled APW-5.
Embodiment 3
[0039] Mix and stir 20ml of 0.15M sodium tungstate solution, 20ml of 0.5M sodium chloride solution, and 4ml of 3mol / L hydrochloric acid solution to form a uniform solution A, then transfer solution A to an autoclave and heat to 180°C, keep warm for 24 hours, after the reaction is completed, centrifuge and dry and collect the precipitate to obtain tungsten trioxide;
[0040] Dissolve 25 mg of tungsten trioxide in 50 ml of deionized water, and sonicate for 2 hours to obtain a tungsten trioxide solution (solution B); add 15 ml of 0.15 mol / L silver nitrate solution to solution B, and stir for 12 hours in the dark to obtain solution C; Add 5ml of 0.15mol / L disodium hydrogen phosphate dropwise to solution C, continue stirring in the dark for 6 hours, then centrifuge and dry at 70°C for 6 hours in a vacuum state to obtain silver phosphate / tungsten trioxide core-shell nanophotocatalytic composite Material. The resulting product was labeled APW-10.
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