TiO2MWNTs光催化复合膜的制备及其水处理性能的开题报告

精品文档---下载后可任意编辑TiO2MWNTs 光催化复合膜的制备及其水处理性能的开题报告【摘要】光催化技术已成为当前热门的水处理技术之一。TiO2 是典型的光催化材料，然而其狭窄的吸光带难以利用可见光，限制了其在光催化领域的应用。而 MWNTs（多壁碳纳米管）有很强的光吸收和电导性，因此制备 TiO2MWNTs 光催化复合膜可以拓展其可见光催化性能。本课题拟选用水热法合成 TiO2MWNTs 复合材料，并将其应用于废水处理。讨论复合膜制备工艺和热处理条件对其性能的影响，探究其在光催化水处理方面的性能。计划采纳紫外可见漫反射光谱（UV-Vis DRS）、扫描电子显微镜（SEM）和 X 射线衍射（XRD）等手段对复合膜的晶体结构、形貌和吸收谱进行表征，并利用采纳对甲酚（HPh）污染的水溶液作为模拟废水，讨论复合膜在搭建的太阳能光催化反应器中的处理效果。【关键词】光催化；TiO2；MWNTs；复合膜；水处理【Abstract】Photocatalysis has become one of the hot water treatment technologies nowadays. TiO2 is a typical photocatalytic material. However, its narrow absorption band makes it difficult to utilize visible light, which limits its application in photocatalytic field. MWNTs have strong absorbability and conductivity and therefore preparing TiO2MWNTs photocatalytic composite film could extend its visible light photocatalysis performance.In this project, TiO2MWNTs composite material will be synthesized by hydrothermal method and applied for wastewater treatment. The influence of composite film preparation process and heat treatment conditions on its performance will be studied, and its performance in photocatalytic water treatment will be explored. Ultraviolet-visible diffuse reflectance spectroscopy (UV-Vis DRS), scanning electron microscopy (SEM) and X-ray diffraction (XRD) will be used to characterize the crystal structure, morphology and absorption spectrum of the composite film. The simulated wastewater polluted by o-cresol (HPh) will be used to measure 精品文档---下载后可任意编辑the treatment effect of the composite film in the solar photocatalytic reactor built in the lab.【Keywords】photocatalysis; TiO2; MWNTs; composite film; water treatment