氧化锌量子点修饰磁性石墨烯三元复合材料制备和光催化性能

发布时间：2018-04-24 00:08

本文选题：氧化锌量子点 + 磁性石墨烯　；参考：《化工新型材料》2017年01期

【摘要】：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。
[Abstract]:Magnetic graphene and zinc oxide quantum dots were prepared by sol-gel method and sol-thermal method respectively. Then zinc oxide quantum dots were successfully loaded onto magnetic graphene by ultrasonic method to prepare magnetic graphene ternary composites modified by zinc oxide quantum dots. The materials were characterized by transmission electron microscopy (TEM) and X-ray diffraction (XRD). The results show that ZnO quantum dots are uniformly distributed on the surface of graphene with a particle size of 5 nm. The photocatalytic properties of the composites were studied by degradation of methylene blue under UV irradiation. The results showed that the degradation rate of methylene blue was 53.32 for pure zinc oxide quantum dots, while that for magnetic graphene ternary composites modified by zinc oxide quantum dots was increased to 87.56, and the photocatalytic activity and stability were still higher even after 5 times of application.
【作者单位】：天津工业大学环境与化学工程学院中空纤维膜材料与膜过程国家重点实验室;哈尔滨工业大学材料科学与工程学院;
【基金】：国家自然科学基金项目(201106101,21475095) 天津市自然科学基金资助项目(12JCZDJC29500,13JCQNJC06300) 中国博士后科学基金资助项目(2013M540281)
【分类号】：TB332;O643.36

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