摘要随着全球环境污染的日益加重，光催化技术在环境净化中的潜在应用逐渐引起了科学界及工业界的广泛关注。为了拓展其实际应用，核心在于开发光谱响应范围宽、光催化效率高及实用性强的光催化材料。实验将以铋基光催化体系中最具代表性的Bi2WO6可见光响应光催化材料为研究对象，通过水热法合成Bi2WO6，然后采用光催化氧化的方法，将导电高分子聚合物聚噻吩(PTh)引入到Bi2WO6中，制备PTh/Bi2WO6复合光催化材料。用于提高了Bi2WO6对光能的利用率及光生载流子的迁移与分离效率。通过在模拟可见光下污染物罗丹明B的降解来表明PTh/Bi2WO6复合材料的光催化性。此外，进一步研究了这种复合光催化材料体系的性能提升机制，为更好的改进和提升光催化性能提供了研究思路，进一步提高Bi2WO6的光催化活性。33232
毕业论文关键词：Bi2WO6；光催化降解；复合材料；PTh/Bi2WO6
 Synthesis and Characterization of PTh/Bi2WO6
Abstract
With the global environmental pollution increasing, the potential application of photocatalysis in environmental purification has aroused widespread concern in the scientific community and industrial circles. In order to expand its application, the core of photocatalytic material is developed with wide spectral response range, high photocatalytic efficiency and practical. Bi2WO6 which was one of the most representative bismuth based photocatalytic system in visible light responsive photocatalytic materials as research object in experiment, Bi2WO6 was synthesised through the hydrothermal synthesis, then by the method of photocatalytic oxidation, the polymer polythiophene(PTh) was conducted into the Bi2WO6 to prepare of PTh/Bi2WO6 composite photocatalyst. To improve the solar energy utilization rate，the separation efficiency of Bi2WO6 migration and the photogenerated charge carriers effectively. The degradation of pollution rhodamine B in the simulation under visible light to show the photocatalytic of PTh/Bi2WO6 composites. In addition, further study of the properties of the composite photocatalyst system promotion mechanism, which provides research ideas for improvement catalytic performance, further improve the photocatalytic activity of Bi2WO6.
Keywords：Bi2WO6；Photocatalytic degradation；Composite material；PTh/Bi2WO6
目录
摘要    1
Abstract    2
1.文献综述    4
1.1 研究背景    4
1.2 光催化技术的应用    5
2.理论框架    6
2.1 半导体光催化剂的基本原理    6
2.2 常见的半导体光催化材料    7
2.3 光催化性能的影响因素    7
2.4 Bi2WO6的性能提升    8
2.5 实验原料的简介    9
2.5.1 Bi2WO6的简介    9
2.5.2 Bi2WO6光催化材料的研究现状    10
2.5.3 聚噻吩的简介    11
3.具体实验内容    11
3.1Bi2WO6的杂化    11
3.2实验内容和表征    13
3.2.1实验材料及仪器    13
3.2.2 样品制备    17
3.2.3 样品表征    19
3.2.4 光催化性能测试    19
4. 分析和讨论    20
4.1 实验样品    20
4.2 实验样品的数据分析    21
4.3分析结果    27
5.实验结论    27
致谢    28
参考文献    29
1.文献综述
1.1 研究背景
随着人类步入工业化社会，诸多有毒化学物质的排出，对环境造成严重污染这一问题已经成为影响人们生活质量和人类社会发展的重大问题。治理和防止环境污染已逐渐成为世界上很多国家普遍关注的重大问题。许多年来，使用光化学基本原理研究、开发和处理各种污染物的新技术与新方法一直是对污染控制化学研究的重点，国内外学者在这一领域做了许多的基础性工作，取得了诸多的成果，慢慢的形成了对污染进行控制的光化学方法。室温深度反应和可直接利用太阳能来驱动反应等是光催化的独特性能，这是一种比较理想的洁净能源生产技术和环境污染治理技术。 聚噻吩/钨酸铋复合材料的光催化性能研究:http://www.youerw.com/cailiao/lunwen_30197.html