Preparation method of composite material of Zn0.8Cd0.2S and graphene
A composite material, graphene technology, applied in chemical instruments and methods, light water/sewage treatment, physical/chemical process catalysts, etc., can solve the problem that photogenerated electrons and holes cannot be effectively separated, limit photocatalytic activity, and reduce adsorption performance. and other problems, to achieve the effect of high photocatalytic activity and stability, improved photocatalytic activity, and simple process
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[0029] Example 1: A Zn of the present invention 0.8 Cd 0.2 The preparation method of S / graphene (GZCS0.5) composite material includes the following steps:
[0030] (1) After mixing zinc acetate dihydrate (329mg) and cadmium acetate dihydrate (120mg) at a molar ratio of 3.33:1, put them in dimethyl sulfoxide solvent (150mL) and stir for 30 minutes;
[0031] (2) Add 2.25 mg of graphene oxide to the mixed solution in step (1), stir and disperse for 60 minutes; the amount of graphene oxide added is the same as that of step (1) zinc acetate dihydrate (329 mg) and cadmium acetate dihydrate ( The ratio of the total weight of 120mg) is 0.5:100, that is, the percentage is 0.5%.
[0032] (3) Transfer the reaction system of step (3) to a 200mL reactor and react at 180°C for 12 hours;
[0033] (4) Pour the product of step (4) into a centrifuge (5000 rpm) for centrifugation, wash it with ethanol and deionized water, and dry it under vacuum at 60°C for 8 hours, then grind to obtain graphene oxide a...
Example Embodiment
[0034] Example 2:
[0035] Change the amount of graphene oxide in step (3) of Example 1 to 11 mg, and the rest of the steps are the same as Example 1, to obtain graphene oxide and Zn 0.8 Cd 0.2 S precursor weight ratio of 2.5% Zn 0.8 Cd 0.2 S / graphene composite material (GZCS2.5).
Example Embodiment
[0036] Example 3:
[0037] Change the amount of graphene oxide in step (3) of Example 1 to 22.5 mg, and the rest of the steps are the same as in Example 1, to obtain graphene oxide and Zn 0.8 Cd 0.2 S precursor weight ratio of 5.0% Zn 0.8 Cd 0.2 S / graphene composite material (GZCS5.0).
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