水热法控制合成Bi12O17Cl2及其结构表征
关键词 Bi12O17Cl2 水热法 光催化 可见光
毕业论文设计说明书外文摘要
Title Structure Characterization of Bi12O17Cl2 Synthesized by Hydrothermal method
Abstract
As a new green technology which has a significant application prospect in the process to solve energy crisis and environmental pollution, photocatalytic technology shows more and more obvious advantages. Recently, the research in bismuth-containing materials have made great progress. bismuth oxyhalide, as one of the bismuth-containing materials, has excellent electrical, magnetic, optical and photoluminescence properties due to its own unique layered structure.In this study,we synthesized Bi12O17Cl2 with unconventional stoichiometric ratio using a hydrothermal method.we also change the composition of the samples by changing the bismuth precursor, chlorine precursor, ratio of reactant, pH and so on. The band gap of as-prepared samples has been tested and found it was approximately 2.2eV .The photocatalytic ability of as-prepared samples in Rhodamine B was checkouted under visible light. The result shows that there is a close relationship between the samples’component and photocatalytic ability ,a mixture of Bi12O17Cl2 and BiOCl shows the highest photocatalytic ability.
Keywords Bi12O17Cl2 hydrothermal method photocatalysis visible light
目 次
1 引言 1
1.1 光催化的意义 1
1.2 主要铋系半导体光催化材料 1
1.2.1 三氧化二铋 1
1.2.2 含铋金属氧化物 1
1.2.3 其他 2
1.3 卤氧化铋的研究现状 2
1.3.1 结构 2
1.3.2 制备技术 3
1.4 本文主要研究工作 3
2 实验部分 5
2.1 实验试剂及仪器 5
2.2 催化剂的制备 6
2.3 材料的表征和分析 7
2.3.1 形貌分析 7
2.3.2 组成分析 8
2.3.3 光学性质分析 8
2.4 光催化活性测试 8
3 实验结果与讨论 9
3.1 结构和形态表征 9
3.1.1 方法1所制备样品的表征 9
3.1.2 方法2所制备样品的表征 11
3.1.3 方法3所制备样品的表征 13
3.1.4 小结 15