A composite photocatalytic material with high photocatalytic activity and its preparation method
A technology of composite photocatalysis and photocatalytic activity, applied in the field of composite photocatalytic materials and their preparation, can solve the problems of poor photocatalytic activity, low pollution degradation efficiency, etc. Effect
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Embodiment 1
[0046] S1: Prepare materials: weigh cadmium nitrate tetrahydrate, thiourea, glutathione, absolute ethanol, ammonia water and tetrabutyl titanate, weigh bismuth nitrate pentahydrate, silver nitrate, ethylene glycol, sodium hydrogen phosphate, Melamine, thiocyanate, carbon fiber and sodium phosphate, for use;
[0047] S2: Preparation of the first catalytic material: take bismuth nitrate pentahydrate and silver nitrate, dissolve ethylene glycol, stir for 20 min, add sodium hydrogen phosphate, continue stirring for 30 min, place in an oil bath for insulation, and the oil bath temperature is 120 ° C, The holding time is 3h, filtered, washed with deionized water and ethanol alternately twice, and then placed in a drying oven to dry, the drying temperature is 70°C, and the drying time is 9h, to obtain the first catalyst material;
[0048] S3: Preparation of the second catalytic material:
[0049] Take cadmium nitrate tetrahydrate, thiourea, and glutathione, dissolve in distilled wat...
Embodiment 2
[0057] S1: Prepare materials: weigh cadmium nitrate tetrahydrate, thiourea, glutathione, absolute ethanol, ammonia water and tetrabutyl titanate, weigh bismuth nitrate pentahydrate, silver nitrate, ethylene glycol, sodium hydrogen phosphate, Melamine, thiocyanate, carbon fiber and sodium phosphate, for use;
[0058] S2: preparation of the first catalytic material: take bismuth nitrate pentahydrate and silver nitrate, dissolve ethylene glycol, stir for 25min, add sodium hydrogen phosphate, continue stirring for 35min, place in an oil bath for insulation, and the oil bath temperature is 125 ℃, The holding time is 2.5h, filtered, washed with deionized water and ethanol alternately twice, and then placed in a drying oven to dry, the drying temperature is 75°C, and the drying time is 8.5h to obtain the first catalyst material;
[0059] S3: Preparation of the second catalytic material:
[0060] Take cadmium nitrate tetrahydrate, thiourea, glutathione, dissolve in distilled water, s...
Embodiment 3
[0068] S1: Prepare materials: weigh cadmium nitrate tetrahydrate, thiourea, glutathione, absolute ethanol, ammonia water and tetrabutyl titanate, weigh bismuth nitrate pentahydrate, silver nitrate, ethylene glycol, sodium hydrogen phosphate, Melamine, thiocyanate, carbon fiber and sodium phosphate, for use;
[0069] S2: the preparation of the first catalytic material: take bismuth nitrate pentahydrate and silver nitrate, dissolve ethylene glycol, stir for 30min, add sodium hydrogen phosphate, continue stirring for 40min, place in an oil bath for insulation, and the oil bath temperature is 130 ℃, The holding time is 2h, filtered, washed with deionized water and ethanol alternately for 3 times, and then placed in a drying oven to dry, the drying temperature is 80°C, and the drying time is 8h to obtain the first catalyst material;
[0070] S3: Preparation of the second catalytic material:
[0071] Take cadmium nitrate tetrahydrate, thiourea and glutathione, dissolve in distilled...
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