Metal or metalloid modified zinc cadmium sulfide-ethylenediamine photocatalyst and preparation method
An ethylenediamine light and metal modification technology, applied in chemical instruments and methods, physical/chemical process catalysts, organic compound/hydride/coordination complex catalysts, etc., can solve the problem of high photogenerated electron-hole recombination rate, high Poor photochemical stability, low photon efficiency, etc., to achieve the effects of good chemical stability, easy operation and low preparation cost
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Embodiment 1
[0043] Example 1 Nickel-modified sulfur-zinc-cadmium (Ni / Zn 0.6 Cd 0.4 The preparation method of S)-ethylenediamine photocatalyst comprises the following steps:
[0044] (1) Mix cadmium acetate, zinc acetate and sulfur to urine in a molar ratio of 1:1.5:8 to obtain a mixture, take 5g of the mixture and add it to 100ml of ethylenediamine, stir to obtain a transparent solution, heat it in water at 180°C for 12h, and cool to room temperature, centrifuged, and the solid was washed with distilled water and dried to obtain Zn 0.6 Cd 0.4 S-ethylenediamine hybrid nanosheets;
[0045] (2) Add 2gZn 0.6 Cd 0.4 S-ethylenediamine hybrid nanosheets dispersed in 2ml 0.2M NiCl 2 In the aqueous solution, disperse evenly, and evaporate the water at 60°C to obtain Ni 2+ Modified Zn 0.6 Cd 0.4 S-ethylenediamine hybrid nanosheets;
[0046] (3) the Ni obtained by 2g step (2) 2+ Modified Zn 0.6 Cd 0.4 S-ethylenediamine hybrid nanosheets were dispersed in 50ml of deionized water, adding ...
Embodiment 2
[0049] Example 2 Cobalt-modified sulfur-zinc-cadmium (Co / Zn 0.9 Cd 0.1 Preparation of S)-ethylenediamine photocatalyst
[0050] (1) Mix cadmium acetate, zinc acetate and sulfur to urine in a molar ratio of 1:9:30 to obtain a mixture, take 8g of the mixture and add it to 100ml of ethylenediamine, stir to obtain a transparent solution, heat it in water at 200°C for 36h, and cool to room temperature, centrifuged, and the solid was washed with distilled water and dried to obtain Zn 0.9 Cd 0.1 S-ethylenediamine hybrid nanosheets;
[0051] (2) 3gZn 0.9 Cd 0.1 S-ethylenediamine hybrid nanosheets dispersed in 3ml 0.4M CoCl 2 In the aqueous solution, the dispersion is uniform, and the water is evaporated at 70°C to obtain Co 2+ Modified Zn 0.9 Cd 0.1 S-ethylenediamine hybrid nanosheets;
[0052] (3) 3gCo 2+ Modified Zn 0.9 Cd 0.1 S-ethylenediamine hybrid nanosheets were dispersed in 50ml of deionized water, adding NaOH to adjust the pH to 13, heating to 70°C, adding 0.3g o...
Embodiment 3
[0056] Example 3 NiCo / Zn 0.8 Cd 0.2 Preparation of S-ethylenediamine photocatalyst
[0057] (1) Mix cadmium acetate, zinc acetate, and sulfur to urine in a molar ratio of 1:4:15 to obtain a mixture, take 10 g of the mixture and add it to 100 ml of ethylenediamine, stir to obtain a transparent solution, heat at 220°C for 48 hours, and cool to room temperature, centrifuged, and the solid was washed with distilled water and dried to obtain Zn 0.8 Cd 0.2 S-ethylenediamine hybrid nanosheets;
[0058] (2) 5gZn 0.8 Cd 0.2 S-ethylenediamine hybrid nanosheets dispersed in 5ml 0.5M NiCl 2 and 0.5MCoCl 2 In the mixed aqueous solution, the dispersion is uniform, and the water is evaporated to dryness at 80°C to obtain Ni 2+ -Co 2+ Modified Zn0.8 Cd 0.2 S-ethylenediamine hybrid nanosheets.
[0059] (3) the Ni obtained by 5g step (2) 2+ -Co 2+ Modified Zn 0.8 Cd 0.2 S-ethylenediamine hybrid nanosheets were dispersed in 50ml of deionized water, adding NaOH to adjust the pH to ...
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