细菌纤维素基碳材料合成及其负载二氧化钛的研究
关键词： 二氧化钛 细菌纤文素 水热碳 光催化
毕业论文设计说明书外文摘要
Title The synthesis of bacterial cellulose carbon material and the research of loading titanium dioxide.
Abstract：
In today's society, the problem of pollution is more and more serious, more and more researchers focus on the photocatalytic technology which can make full use of solar energy, titanium dioxide is one of the most important kind of photocatalyst,but there are some defects of TiO2 due to its own properties:it only absorb ultraviolet light, and light excitation generated carrier and holes is easy to compound. Therefore it is necessary to research the titanium dioxide composite material, nano carbon materials as high-profile materials, has a good electrical conductivity, thermal stability,chemical stability and good mechanical performance, etc, so the titanium dioxide can be loaded on a carbon material. But general carbon fibre or carbon nanotubes need in the process of surface treatment before as catalyst carrier, so you need to select a surface oxygen groups more carbon materials. This study selected carbon material is produced by bacterial cellulose hydrothermal carbonization hydrothermal carbon, the experimental characterization results show that more oxygen containing groups on the carbon materials can make titanium dioxide load its surface well; By photocatalytic experiment test, and the composite nanomaterials under uv irradiation on escherichia coli and staphylococcus aureus sterilization efficiency than single ultraviolet sterilization with high efficiency, The degradation of methyl orange rate as high as 99%.
Keywords： Titanium dioxide Bacterial cellulose Hydrothermal carbon
photocatalytic
目录
1 绪论 1
1.1 光催化的意义 1
1.2二氧化钛光催化的原理 2
1.3二氧化钛的结构 4
1.4 TiO2的制备方法 5
1.5 TiO2的复合材料 6
1.6 一文碳材料和水热碳材料 7
2.实验部分 8
2.1实验试剂与仪器 8
2.2制备细菌纤文素 9
2.3细菌纤文素水热合成碳材料 9
2.4水热合成碳球负载TiO2 10
2.5 光催化实验 10
2.6表征 12
3.结果与讨论 14
3.1 BC及水热碳材料表征结果 14
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