Preparation method of visible light response zinc cadmium sulfur solid solution photocatalytic material
A photocatalytic material, solid solution technology, applied in chemical instruments and methods, physical/chemical process catalysts, organic compound/hydride/coordination complex catalysts, etc. problems such as poor performance, to achieve the effect of uniform morphology and structure, simple process and low cost
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Embodiment 1
[0018] Disperse 0.6g of cadmium chloride, 0.74g of zinc acetate and 0.68g of sublimed sulfur in a mixed solution of 24mL of diethylenetriamine and 12mL of deionized water, and stir at room temperature at a speed of 600 rpm for 60 minutes to obtain a uniform The dispersion liquid, and then the dispersion liquid was transferred to a high-pressure reactor, and placed in a vacuum blast drying oven with a set temperature of 80° C. to react for 48 hours.
[0019] Then use deionized water to centrifuge at a speed of 6000 rpm until the pH value is about 7, remove the supernatant, freeze-dry the obtained product at -55°C for 30 hours, and then grind it with a mortar. Obtain zinc cadmium sulfur nanomaterials.
[0020] After testing, the material has good hydrogen production performance, and the hydrogen production rate reaches 9214 umol g -1 •h -1 , nearly double the hydrogen production rate in the prior art.
Embodiment 2
[0022] Disperse 1.1 g of cadmium nitrate, 0.8 g of zinc nitrate, 2.0 g of sodium sulfide and 0.5 g of polyvinylpyrrolidone in a mixed solution of 20 mL of hexamethylenetetramine and 20 mL of deionized water, at room temperature at 450 rpm Stir for 100 minutes to obtain a uniform dispersion, then transfer the dispersion to a high-pressure reactor, and place it in a vacuum blast drying oven with a set temperature of 130° C. for 48 hours.
[0023] Then use deionized water to centrifuge at a speed of 8000 rpm until the pH value is about 7, remove the supernatant, freeze-dry the obtained product at -55°C for 48 hours, and then grind it with a mortar to obtain Zinc cadmium sulfur nanomaterials with a particle size of 60nm.
[0024] After testing, the material has good hydrogen production performance, and the hydrogen production rate reaches 11642 umol g -1 •h -1 .
Embodiment 3
[0026] 17g of cadmium acetate, 22g of zinc chloride and 40g of sodium thiosulfate were dispersed in 10L of triethylenetetramine and 20L of aqueous solution, stirred at room temperature at a speed of 700 rpm for 120 minutes to obtain a uniform dispersion, and then The dispersion liquid was transferred to a high-pressure reactor, and placed in a vacuum blast drying oven with a set temperature of 160° C. to react for 36 hours.
[0027] Then use deionized water to centrifuge at a speed of 8000 rpm until the pH value is about 7, remove the supernatant, freeze-dry the obtained product at -55°C for 70 hours, and then grind it with a mortar to obtain Zinc cadmium sulfur nanomaterials with a particle size of 70nm.
[0028] After testing, the material has good hydrogen production performance, and the hydrogen production rate reaches 10221 umol g -1 •h -1 .
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