论文总字数：26295字

摘 要

ABSTRACT.......................................................................................................................................Ⅱ

第一章 绪论.......................................................................................................................................1

1.1 半导体.......................................................................................................................................1

1.1.1 半导体能带理论............................................................................................................2

1.1.2 半导体光催化原理.......................................................................................................3

1.1.3 影响光催化的因素.......................................................................................................3

1.2 光催化技术改性.....................................................................................................................5

1.3 掺杂............................................................................................................................................6

1.3.1 杂质...................................................................................................................................6

1.3.2 掺杂物...............................................................................................................................6

1.3.3 载子浓度..........................................................................................................................7

1.3.4 掺杂对结构的影响........................................................................................................7

1.4 氮化碳........................................................................................................................................7

1.4.1 背景...................................................................................................................................7

1.4.2 制备...................................................................................................................................8

1.4.3 P掺杂氮化碳的性质.....................................................................................................8

1.4.4 石墨相氮化碳的制备....................................................................................................9

1.5 二氧化钛....................................................................................................................................9

1.5.1 二氧化钛的光催化原理................................................................................................9

1.5.2 影响催化效率的因素....................................................................................................10

1.6 实验意义....................................................................................................................................11

第二章 实验部分..............................................................................................................................12

2.1 实验药品及仪器......................................................................................................................12

2.2 原料制备....................................................................................................................................12

2.2.1 纯氮化碳的制备.............................................................................................................12

2.2.2 P掺杂石墨相氮化碳的制备........................................................................................13

2.2.3 制备复合材料..................................................................................................................13

2.3 结构分析....................................................................................................................................14

2.3.1 XRD.......................................................................................................................................14

2.3.2 红外光谱仪......................................................................................................................15

2.3.3 场发射电镜......................................................................................................................15

2.4 光催化研究...............................................................................................................................15

2.4.1 甲基蓝降解率..................................................................................................................15

2.4.2 分光光度计......................................................................................................................16

第三章 结果与讨论.........................................................................................................................18

3.1 光催化性能...............................................................................................................................18

3.2 XRD分析.....................................................................................................................................19

3.3 荧光分析....................................................................................................................................20

3.4 红外分析....................................................................................................................................20

3.5光催化机理研究........................................................................................................................21

3.6研究结果与建议........................................................................................................................23

参考文献.................................................................................................................................................25

致谢.............................................................................................................................................28

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