反蛋白石结构ZnO、TiO2光催化薄膜的制备及其性能研究
毕业论文关键字：反蛋白石结构；ZnO；TiO2 ；光催化降解；自组装
Abstract
This paper expounds the preparation and the photocatalytic property research of inverse opal ZnO（ZnO-IO） photonic crystal films. The controllable polymethyl methacrylate (PMMA) microspheres were prepared by micro emulsion polymerization. Then, PMMA is used as a template of preparing the ZnO-IO structures which are face-centered cubic (FCC) shell structures. The structure and morphology of the ZnO photocatalytic films were characterized by XRD and SEM. Herein, we have studied on influence of different concentrations, different sizes, and different materials of glass and different permeation methods which affected on the ZnO-IO photocatalytic degradation of methylene blue (MB). The ZnO-IO thin film showed better photocatalytic degradation efficiency under ultraviolet - visible light. The degradation rate of MB reached 80% after 110 minutes when using the ZnO-IO film with an area of 600 mm2. In addition, the Ag-modified TiO2-IO film was prepared by similar methods. This study indicates that Ag-modified TiO2-IO is a catalyst with higher catalytic activity of photocatalytic degradation.
KeyWoeds: Inverse Opal; ZnO; TiO2;Photocatalytic degradation; Self-assembly
目录
1 绪论 1
1.1 光子晶体的简介 1
1.1.1 光子晶体的特征 1
1.1.2 光子晶体的发展 2
1.1.3 光子晶体的用途 3
1.2 反蛋白石结构光子晶体 4
1.2.1 反蛋白石结构光子晶体的简介 4
1.2.2 反蛋白石结构制的制备方法 5
1.3 ZnO和TiO2在光摧化方面的简介 6
1.3.1 ZnO和TiO2的光催化原理 6
1.3.2 ZnO光催化性能 7
1.3.3 贵金属改性TiO2在光催化方面的应用 7
1.4 本课题主要研究的内容 8
1.4.1 课题的研究目的及意义 8
1.4.2 实验方案 8
2 实验部分 9
2.1 实验药品及主要仪器 9
2.1.1 实验原料 9
2.1.2 实验主要仪器 10
2.2 实验操作 11
2.2.1 聚甲基丙烯酸甲酯（PMMA）单分散亚微米小球的制备 11
2.2.2 ZnO反蛋白石结构制备 12
2.2.3 ZnO光催化降解亚甲基蓝 12
2.2.4 Ag / TiO2反蛋白石结构薄膜制备及光催化 13
3 结果与讨论 14
3.1 PMMA分析 14
3.1.1 PMMA的粒径分布 14
3.1.2 自组装的PMMA扫描电镜图 15
3.1.3 自组装的PMMA数码照片 17
3.2 ZnO反蛋白石薄膜分析 18
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