A kind of preparation method of rounded cube type zinc hydroxystannate solar photocatalyst
A technology of zinc hydroxystannate and sunlight, applied in chemical instruments and methods, physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, etc., to achieve high degradation efficiency
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Embodiment 1
[0011] 0.8mmol ZnCl 2 Add it into 16mL deionized water and stir until completely dissolved. During the stirring process, add 1mL concentrated ammonia solution (25wt%-28wt%) to obtain a milky white solution. After 2min, add 16mL Na with a molar concentration of 0.05mol / L dropwise. 2 SnO 3 solution, continue to react for 15 minutes under stirring conditions, centrifuge the precipitate, wash it with water, put it in a drying oven, dry it, and then put it in a mortar to grind it to obtain a rounded cubic type zinc hydroxystannate solar catalyst, which is irradiated by natural sunlight 5h, the removal rate of 5mg / L methylene blue dye wastewater was 70.29%.
Embodiment 2
[0013] 0.8mmol ZnCl 2 Add it into 16mL deionized water and stir until completely dissolved. During the stirring process, add 1mL concentrated ammonia solution (25wt%-28wt%) to obtain a milky white solution. After 2min, add 16mL Na with a molar concentration of 0.05mol / L dropwise. 2 SnO 3 solution, continue to react for 15 minutes under stirring conditions, centrifuge the precipitate, wash it with water, place it in a drying oven and dry it, and then grind it in a mortar to obtain a zinc hydroxystannate photocatalyst. The zinc hydroxystannate photocatalyst prepared above is The catalyst was calcined at 300°C to obtain the product, and the removal rate of 5 mg / L methylene blue dye wastewater was 71.84% after natural sunlight irradiation for 5 hours.
Embodiment 3
[0015] 0.8mmol ZnCl 2 Add it into 16mL deionized water and stir until completely dissolved. During the stirring process, add 1mL concentrated ammonia solution (25wt%-28wt%) to obtain a milky white solution. After 2min, add 16mL Na with a molar concentration of 0.05mol / L dropwise. 2 SnO 3 solution, continue to react for 15 minutes under stirring conditions, centrifuge the precipitate, wash it with water, place it in a drying oven and dry it, and then grind it in a mortar to obtain a zinc hydroxystannate photocatalyst. The zinc hydroxystannate photocatalyst prepared above is The catalyst was calcined at 700°C to obtain the product, and the removal rate of 5 mg / L methylene blue dye wastewater was 49.58% after natural sunlight irradiation for 5 hours.
[0016] Based on the above examples, the performance of the zinc hydroxystannate photocatalyst prepared at room temperature is better. Through further characterization studies, the zinc hydroxystannate photocatalyst prepared under ...
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