Changchun University of Architecture and Civil Engineering, Changchun 130000, China E-mail:
Changchun University of Architecture and Civil Engineering, Changchun 130000, China.
Water Sci Technol. 2023 Sep;88(6):1495-1507. doi: 10.2166/wst.2023.288.
Organic pollutants in water bodies pose a serious environmental problem, and photocatalytic technology is an efficient and environmentally friendly water treatment method. Titanium dioxide (TiO) is a widely used photocatalyst, but it suffers from some drawbacks such as a narrow light response range, fast charge recombination, and low photocatalytic activity. To improve the photocatalytic performance of TiO, this article reviews the preparation methods, performance evaluation, and applications of modified TiO photocatalysts. Firstly, the article introduces the effects of doping modification, semiconductor composite modification, and other modification methods on the structure and properties of TiO photocatalysts, as well as the common characterization techniques and activity test methods of photocatalysts. Secondly, the article discusses the effects and mechanisms of modified TiO photocatalysts on degrading dye, pesticide, and other organic pollutants in water bodies, as well as the influencing factors. Finally, the article summarizes the main achievements and advantages of modified TiO photocatalysts in degrading organic pollutants in water bodies, points out the existing problems and challenges, and prospects for the development direction and future of this field.
水体中的有机污染物构成了严重的环境问题，而光催化技术是一种高效且环保的水处理方法。二氧化钛（TiO）是一种广泛应用的光催化剂，但它存在一些缺点，如窄光响应范围、快速电荷复合以及低光催化活性。为了提高 TiO 的光催化性能，本文综述了改性 TiO 光催化剂的制备方法、性能评价和应用。首先，本文介绍了掺杂改性、半导体复合改性等改性方法对 TiO 光催化剂结构和性能的影响，以及光催化剂常见的表征技术和活性测试方法。其次，本文讨论了改性 TiO 光催化剂对水体中染料、农药等有机污染物的降解效果和机制，以及影响因素。最后，本文总结了改性 TiO 光催化剂在降解水体中有机污染物方面的主要成果和优势，指出了存在的问题和挑战，并展望了该领域的发展方向和未来。
