摘要本课题选用四氯化钛为钛源，糠醛等为碳源，采用浸渍法，经过老化、溶剂交换、超临界干燥、焙烧、浸渍等过程制备了纳米TiO2-C复合材料；考察了钛炭比、焙烧温度对材料降解性能的影响；并采用XRD和SEM检测方法对材料进行结构表征；同时以罗丹明B和活性艳红X-3B为降解对象，检测其光催化性能，并对影响降解的因素进行了分析。材料结构表征显示，制备的纳米TiO2-C复合材料颗粒分布均匀、具有较丰富的孔道、晶型基本都成锐钛矿相、碳元素以无定形碳的形式掺入到TiO2中。纳米TiO2-C复合材料在光催化条件下的降解实验结果显示，在紫外光条件下，纳米TiO2-C复合材料对有机污染物有较好的降解性能，降解后活性艳红X-3B溶液和罗丹明B溶液的降解率都达到90%以上，并且降解无选择性。在可见光条件下，纳米TiO2-C复合材料降解同浓度的罗丹明B和活性艳红时，降解性能体现出差异和降解选择性。36994
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 浸渍法制备纳米TiO2-C复合材料的研究:http://www.751com.cn/cailiao/lunwen_35508.html