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通过溶剂热法和溶胶-凝胶法分别制备磁性石墨烯和氧化锌量子点,然后通过超声的方法将氧化锌量子点成功负载到磁性石墨烯上制得氧化锌量子点修饰的磁性石墨烯三元复合材料。通过透射电镜(TEM)和X射线衍射(XRD)对制得的材料进行表征。结果显示氧化锌量子点均匀地分布在石墨烯表面,粒径为5nm。通过在紫外光照射下降解亚甲基蓝来研究复合材料的光催化性能。结果显示,对亚甲基蓝的降解率,单纯的氧化锌量子点为53.32%;而氧化锌量子点修饰的磁性石墨烯三元复合材料提高到了87.56%,即使在使用5次后仍然具有较高的光催化活性和稳定性。
Preparation of magnetic graphene and zinc oxide quantum dots by solvothermal method and sol-gel method, respectively, and then the quantum dots of zinc oxide were successfully loaded onto the magnetic graphene by the ultrasonic method to obtain zinc oxide quantum dot modified magnetic graphene tris Meta composite materials. The prepared material was characterized by transmission electron microscopy (TEM) and X-ray diffraction (XRD). The results show that ZnO quantum dots are uniformly distributed on the graphene surface and have a particle size of 5 nm. The photocatalytic activity of the composites was studied by degrading methylene blue under UV irradiation. The results showed that the degradation rate of methylene blue was 53.32% of the pure zinc oxide quantum dot, while the quantum dot-modified magnetic graphene composite with zinc oxide increased to 87.56%, and still had higher light even after 5 times Catalytic activity and stability.