石墨烯改性半导体基纳米光催化材料的微波法制备及其性能研究
发布时间：2018-10-26 06:51
【摘要】：石墨烯是一种由单层碳原子紧密排列而成的二维蜂窝状晶格结构的纳米材料。石墨烯与其他碳材料相比,比表面积更大、电子迁移率更高、电化学稳定性更好。由于它具有如此优异的性能,所以石墨烯被广泛的应用于纳米复合材料的制备中以提高纳米材料的性能。本论文通过石墨烯改性半导体基光催化材料,以改善半导体材料光催化性能。我们采用微波法制备了石墨烯/半导体纳米复合光催化材料,并对其进行表征、性能测试,主要内容如下：(1) 运用Hummers法以天然鳞片石墨作为原料制备氧化石墨,再经过超声作用剥离成为氧化石墨烯。用)KRD、Raman、SEM、TEM进行物相结构表征。(2) 通过微波法以氧化石墨烯和硝酸锌作为反应原料,制备石墨烯/氧化锌。对制备的材料进行了TEM、SEM和XRD测试。结果表明制备的氧化锌是单晶结构,石墨烯和氧化锌成功复合,并提高了氧化锌的光催化性能。(3) 通过微波法以氧化石墨烯、醋酸锌和硝酸银作为反应原料,制备石墨烯/氧化锌/银。对制备的材料进行Raman、TEM、SEM、PL和XRD测试。结果表明石墨烯、氧化锌和银三种材料很好的复合在一起,加入银后,三元复合材料与石墨烯/氧化锌相比,光催化性能得到明显提升。(4) 通过微波法以氧化石墨烯和硝酸银作为反应原料,制备石墨烯/磷酸银。对制备的材料进行Raman、TEM、SEM、PL和XRD测试。结果表明石墨烯和磷酸银两种材料很好的复合在一起,复合后与磷酸银相比,光催化性能得到明显提升。
[Abstract]:Graphene is a kind of two-dimensional honeycomb lattice nanomaterials composed of single-layer carbon atoms. Compared with other carbon materials, graphene has larger specific surface area, higher electron mobility and better electrochemical stability. Because of its excellent properties, graphene has been widely used in the preparation of nanocomposites to improve the properties of nano-materials. In order to improve the photocatalytic performance of semiconductor materials, graphene was used to modify semiconductor based photocatalytic materials. Graphene / semiconductor nano-composite photocatalytic materials were prepared by microwave method and characterized. The main contents were as follows: (1) Graphite oxide was prepared from natural flake graphite by Hummers method. Then the graphene oxide was peeled off by ultrasonic. (2) graphene / zinc oxide was prepared by microwave method using graphene oxide and zinc nitrate as raw materials. The prepared materials were tested by TEM,SEM and XRD. The results showed that the prepared zinc oxide was single crystal structure, graphene and zinc oxide were successfully combined, and the photocatalytic properties of zinc oxide were improved. (3) graphene oxide, zinc acetate and silver nitrate were used as raw materials by microwave method. Graphene / zinc oxide / silver was prepared. The prepared materials were tested by Raman,TEM,SEM,PL and XRD. The results showed that graphene, zinc oxide and silver were well combined together. After silver was added, the ternary composites were compared with graphene / zinc oxide. The photocatalytic activity was improved obviously. (4) graphene / silver phosphate was prepared by microwave method using graphene oxide and silver nitrate as raw materials. The prepared materials were tested by Raman,TEM,SEM,PL and XRD. The results show that graphene and silver phosphate are well combined together, and the photocatalytic performance of the composite is obviously improved compared with that of silver phosphate.
【学位授予单位】：青岛科技大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：O643.36;TB383.1
本文编号：2294910
[Abstract]:Graphene is a kind of two-dimensional honeycomb lattice nanomaterials composed of single-layer carbon atoms. Compared with other carbon materials, graphene has larger specific surface area, higher electron mobility and better electrochemical stability. Because of its excellent properties, graphene has been widely used in the preparation of nanocomposites to improve the properties of nano-materials. In order to improve the photocatalytic performance of semiconductor materials, graphene was used to modify semiconductor based photocatalytic materials. Graphene / semiconductor nano-composite photocatalytic materials were prepared by microwave method and characterized. The main contents were as follows: (1) Graphite oxide was prepared from natural flake graphite by Hummers method. Then the graphene oxide was peeled off by ultrasonic. (2) graphene / zinc oxide was prepared by microwave method using graphene oxide and zinc nitrate as raw materials. The prepared materials were tested by TEM,SEM and XRD. The results showed that the prepared zinc oxide was single crystal structure, graphene and zinc oxide were successfully combined, and the photocatalytic properties of zinc oxide were improved. (3) graphene oxide, zinc acetate and silver nitrate were used as raw materials by microwave method. Graphene / zinc oxide / silver was prepared. The prepared materials were tested by Raman,TEM,SEM,PL and XRD. The results showed that graphene, zinc oxide and silver were well combined together. After silver was added, the ternary composites were compared with graphene / zinc oxide. The photocatalytic activity was improved obviously. (4) graphene / silver phosphate was prepared by microwave method using graphene oxide and silver nitrate as raw materials. The prepared materials were tested by Raman,TEM,SEM,PL and XRD. The results show that graphene and silver phosphate are well combined together, and the photocatalytic performance of the composite is obviously improved compared with that of silver phosphate.
【学位授予单位】：青岛科技大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：O643.36;TB383.1
【参考文献】
相关期刊论文 前1条
1 彭峰,任艳群;提高二氧化钛光催化性能的研究进展[J];现代化工;2002年10期
，本文编号：2294910
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