浸渍法制备纳米TiO2-C复合材料的研究
毕业论文关键词：浸渍法；纳米TiO2-C复合材料；光催化
Abstract
The topic chosen titanium tetrachloride titanium source， furfural as the carbon source， by impregnation method， after aging， solvent exchange， supercritical drying， charring， and dipping the preparation of nano-TiO2-C composites ; The effects of titanium ratio， charcoal carbonization temperature properties of material degradation; and using XRD and SEM detection methods for structural characterization of materials; and Rhodamine B and Reactive Brilliant Red X-3B was degraded object detected photocatalytic properties ， and the effect on the degradation factors were analyzed. Characterization of material shows that the nano TiO2-C composite particle distribution， with a wealth of channels， crystal basically into the anatase phase， carbon in the form of amorphous carbon is incorporated into the TiO2 in. Nano-TiO2-C composites degradation experiments under light catalytic conditions shows under UV conditions， Nano TiO2-C composite materials on the degradation of organic pollutants have better performance degradation after reactive brilliant red X-3B solution Rhodamine B degradation rate has reached more than 90%， and non-selective degradation. In visible light conditions， Nano TiO2-C composite material degradation of rhodamine B with concentration and activity of red， reflecting the differences in performance degradation and degradation of selectivity.
KeyWords：impregnation method; nano-TiO2-C composites; photocatalytic
目录
1 引言 1
1.1 课题研究背景 1
2 文献综述 3
2.1 TiO2概述 3
2.1.1 TiO2结构性能 3
2.1.2 TiO2光催化机理 4
2.1.3 TiO2主要的掺杂改性类型 5
2.1.4 TiO2光催化材料的应用 8
2.1.5 TiO2光催化的优点和存在的问题 9
2.2炭气凝胶概述 10
2.2.1炭气凝胶结构性能 10
2.2.2.炭气凝胶的应用 10
2.3 纳米TiO2-C复合材料的主要制备方法及发展 10
2.3.1 气相法 11
2.3.2 液相法 11
2.3.3 固相法 12
3 实验及表征 13
3.1 实验原料及试剂 13
3.2 实验仪器与设备 13
3.3 实验步骤 14
3.3.1 纳米TiO2-C复合材料的制备 14
3.3.2 纳米TiO2-C复合材料光催化实验步骤 14
3.4 结果表征 16
3.4.1 XRD的表征 16
3.4.2 SEM的表征 16
4 结果与讨论 17
4.1二氧化钛掺碳XRD分析 17