High-efficiency full-spectrum response CuS/graphene composite photocatalyst and preparation method thereof
A graphene composite and photocatalyst technology, which is applied in the field of photocatalytic materials, can solve the problems of complex preparation process, unsafety, and difficult operation, and achieve the effects of low cost, convenient operation, and mild conditions
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Embodiment 1
[0024] 1) Preparation of photocatalyst
[0025] Add 1.6mg graphite oxide to 10ml 0.1mol / l copper sulfate solution, ultrasonically disperse, add 10ml 0.1mol / l thioacetamide solution dropwise to the above solution, stir for 30 minutes to form a uniformly dispersed mixed solution, put into a 35ml microwave tube. Then, the microwave tube was placed in a microwave reaction synthesizer, reacted at 150° C. for 10 minutes, washed, and dried to obtain a CuS / graphene composite.
[0026] figure 1 SEM images of the synthesized CuS / graphene. As can be seen from the figure, graphene is a transparent, wrinkled sheet structure. Pure CuS is a spherical structure with a diameter of about 200-500nm, and the spherical CuS is assembled by nanoparticles, and the CuS microspheres are well dispersed on the graphene sheet.
[0027] figure 2 is the X-ray diffraction pattern of the synthesized CuS / graphene. It is found from the figure that there is only the diffraction peak of CuS in the XRD diff...
Embodiment 2
[0033] Add 3.6mg graphite oxide to 10ml 0.15mol / l copper chloride solution, ultrasonically disperse, add 10ml 0.2mol / l sodium sulfide solution dropwise to the above solution, stir for 30 minutes to form a uniformly dispersed mixed solution, put 35ml microwave tube. Then, the microwave tube was placed in a microwave reaction synthesizer, reacted at 160° C. for 10 minutes, washed, and dried to obtain a CuS / graphene composite.
[0034] The method described in Embodiment 1 was used to test the degradation activity of p-nitrobenzene of the photocatalyst prepared in this example under the irradiation of ultraviolet, visible and infrared light. Its photocatalytic performance is shown in Table 1.
Embodiment 3
[0036] Add 1.9mg graphite oxide to 10ml 0.1mol / l copper nitrate solution, ultrasonically disperse, add 10ml 0.2mol / l thiourea solution dropwise to the above solution, stir for 30 minutes to form a uniformly dispersed mixed solution, put in 35ml in the microwave tube. Then, the microwave tube was placed in a microwave reaction synthesizer, reacted at 140° C. for 10 minutes, washed, and dried to obtain a CuS / graphene composite.
[0037] The method described in Embodiment 1 was used to test the degradation activity of the photocatalyst prepared in this example to nordamine B under the irradiation of ultraviolet, visible and infrared light. Its photocatalytic performance is shown in Table 1.
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