Photocatalysis dust haze eliminating agent and preparation method thereof
A photocatalyst and photocatalytic technology, applied in chemical instruments and methods, separation methods, combined devices, etc., can solve the problems of poor haze particle trapping ability and low practicability, and improve the photocatalytic ability and reduce the surface area. Tension, easy trapping effect
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[0043] Example 1
[0044] Dissolve 25.8g (0.1mol) of titanium oxysulfate (0.1mol), 4.0g (0.01mol) of iron sulfate, and 17.2g (0.05mol) of aluminum sulfate in deionized water to prepare a 2mol / L sulfate solution, and filter to remove insoluble And mix to form a mixed sulfate solution. Under stirring, add 205mL of 2mol / L ammonia water to the mixed sulfate solution to co-precipitate titanium-iron-aluminum hydroxide, neutralize the solution to pH 11, filter and separate the formed hydroxide precipitate, and deionize Wash the hydroxide precipitate with water, and use barium chloride test solution to check that the washing water does not contain sulfate ions. Disperse the hydroxide precipitate in 56g (0.56mol) of acetylacetone solvent, so that the hydroxide precipitate can be completely peptized, and heat and reflux at 130-140℃ for 6h to form Fe-Al co-doped nano-TiO 2 Photocatalyst sol.
[0045] Dilute 37.2g (0.187mol) of commercially available 30% alkaline silica sol with deionized wa...
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[0047] Example 2
[0048] Dissolve 25.8g (0.1mol) of titanium oxysulfate (0.1mol), 8.0g (0.02mol) of iron sulfate and 8.6g (0.025mol) of aluminum sulfate in deionized water to prepare a 2mol / L sulfate solution, and filter to remove insolubles. , Mixed to form a mixed sulfate solution. Under stirring, add 235mL of 2mol / L ammonia water to the mixed sulfate solution to co-precipitate the titanium iron aluminum hydroxide, neutralize the solution to pH 10, filter and separate the formed hydroxide precipitate, and deionize Wash the hydroxide precipitate with water, and use barium chloride test solution to check that there is no sulfate ion in the washing water. Disperse the hydroxide precipitate in 47g (0.47mol) of acetylacetone solvent, so that the hydroxide precipitate can be completely peptized, and heat and reflux for 10h at 130-140℃ to form Fe-Al co-doped nano-TiO 2 Photocatalyst sol.
[0049] Dilute 47.1g (0.235mol) of commercially available 30% alkaline silica sol with deionized...
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