Loaded type silver phosphate/polyphosphoric silver/silver chloride compound water treatment photo-catalyst and preparation method thereof
A technology of silver polyphosphate and photocatalyst, which is applied in the direction of physical/chemical process catalyst, light water/sewage treatment, energy wastewater treatment, etc. The effect of accelerating the decomposition
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Embodiment 1
[0017] Weigh 1 mol of NaCl, grind it to a particle size of 100 μm, and add it into 3 L of H with a concentration of 1 mol / L under vigorous stirring (350 rpm). 3 PO 4 In the solution, keep stirring (200 rpm) for 30min; add dropwise AgNO with a concentration of 1mol / L to the above solution 3 A total of 2L, continue to stir during the dropwise addition, stir for another 60min after the dropwise addition, precipitate and age for 24h; wash the obtained precipitate with deionized water 4 times, and dry to obtain the loaded silver phosphate / silver polyphosphate / chlorine Silver compound water treatment photocatalyst.
[0018] Add 0.1 g of the obtained silver phosphate / silver polyphosphate / silver chloride photocatalyst into 500 mL of Orange II wastewater with a concentration of 30 mg / L, react for 20 min under the irradiation of a 500 w metal halide lamp, and the decolorization rate is 98.8%, repeat After 6 times of utilization, the decolorization rate of Orange II is 90.5%.
Embodiment 2
[0020] Weigh 2 mol of NaCl, grind it to a particle size of 300 μm, and add it into 4 L of H with a concentration of 2 mol / L under vigorous stirring (350 rpm). 3 PO 4 In the solution, keep stirring (200 rpm) for 40min; add dropwise AgNO with a concentration of 2mol / L to the above solution 3 A total of 4L, continue to stir during the dropwise addition, stir for another 70min after the dropwise addition is completed, precipitate and age for 24h; wash the obtained precipitate with deionized water 5 times, and dry to obtain the loaded silver phosphate / silver polyphosphate / chlorine Silver compound water treatment photocatalyst.
[0021] 0.1 g of the obtained silver phosphate / silver polyphosphate / silver chloride photocatalyst was added to 500 mL of methyl orange wastewater with a concentration of 20 mg / L, and reacted for 20 min under the irradiation of a 500 w metal halide lamp, and the decolorization rate was 97.6%. After repeated use for 6 times, the decolorization rate of methyl...
Embodiment 3
[0023] Weigh 2 mol of NaCl, grind it to a particle size of 300 μm, and add it into 3 L of H with a concentration of 2 mol / L under vigorous stirring (350 rpm). 3 PO 4 In the solution, keep stirring (200 rpm) for 40min; add dropwise AgNO with a concentration of 2mol / L to the above solution 3 A total of 3L, continue to stir during the dropwise addition, stir for another 70min after the dropwise addition, precipitate and age for 24h; wash the obtained precipitate with deionized water for 5 times, and dry to obtain the loaded silver phosphate / silver polyphosphate / chlorine Silver compound water treatment photocatalyst.
[0024] Add 0.1 g of the obtained silver phosphate / silver polyphosphate / silver chloride photocatalyst into 500 mL of acidic scarlet wastewater with a concentration of 20 mg / L, and react for 20 minutes under the irradiation of a 500 w metal halide lamp, and the decolorization rate is 99.8%. After being used for 6 times, the decolorization rate to acid scarlet is 91....
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Abstract
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