钛基纳米复合材料的制备及可见光降解水中污染物性能研究

Preparation of Titanium Matrix Nanocomposites and Visible Light Degradation of Pollutants in Water

随着医药科技的发展,抗生素污染逐渐严重。针对环境污染等系列污染物问题,光催化成为了一门处理污染物的热门技术。光催化材料经常使用的有二氧化钛,二氧化钛的优点有健康环保、无污染、容易获取、光催化效率高、储备量大。光催化技术具有成本廉价、简单易操作、太阳能方便获取等优点,为解决环境污染问题提供了有效的途径。为了解决环境污染,修饰二氧化钛的缺陷,提升二氧化钛性能,提出以TiO_(2)为主体,通过TiO_(2)与窄带隙半导体CdS复合,用溶剂热合成法制备出TiO_(2)/CdS二元复合物,增强TiO_(2)对于可见光区间吸收。为了提升降解效果,引入MOF材料UiO-66,制备TiO_(2)/CdS/UiO-66三元复合材料,增大比表面积,提升材料去污能力。

With the development of medical science and technology,antibiotic pollution is gradually serious.Aiming at a series of pollutants such as environmental pollution,photocatalysis has become a hot technology to deal with pollutants.Titanium dioxide is often used as a photocatalytic material.Titanium dioxide has the advantages of healthy environmental protection,no pollution,easy access,high photocatalytic efficiency and large reserve.Photocatalysis has the advantages of cheap cost,simple operation,easy access to solar energy,etc.Photocatalysis technology provides an effective way to solve the problem of environmental pollution.In order to solve environmental pollution,modify the defects of titanium dioxide,and improve the performance of titanium dioxide.This paper proposed TiO_(2)as the main body,through TiO_(2)and narrow band gap semiconductor CdS composite.TiO_(2)/CdS binary composite was prepared by solvothermal synthesis method to enhance the absorption of TiO_(2)in the visible range.In order to improve the degradation effect,MOF material UiO-66 was introduced to prepare TiO_(2)/CdS/UiO-66 terpolymer,which increased the specific surface area and improved the decontamination ability of the material.