漂浮型光催化材料的制备及其在水处理领域的应用研究进展

Recent advances in preparation and application of floating photocatalysts in water treatment

漂浮型光催化材料以高效光催化剂为核心,以太阳光等绿色清洁能源为驱动力,克服了纳米光催化剂难以回收利用这一瓶颈问题,通过吸附、光催化等耦合作用高效原位降解水体中的污染物,是实现光催化高级氧化技术规模化应用最有前景的途径之一。本文从载体类型出发,概括总结了近年来漂浮型光催化材料的轻质特性构建策略、形貌结构和不同载体利弊;分析比较了典型光催化剂-载体复合材料制备方法的优缺点;分类阐述了漂浮型光催化剂在水处理领域的应用研究成果。通过归纳漂浮型光催化材料在实际应用中存在的问题,指出未来漂浮型光催化剂的研究开发应重点关注环境友好型载体和材料性能稳定性;同时可通过构建多功能复合材料或采取多工艺耦合的方式以推动高效光催化剂在水处理方面的规模化应用。

Photocatalysis with floating photocatalysts is one of the promising advanced oxidation technologies in water treatment field,which can overcome the recovery problem of nanoparticles.This method relies on the high-efficiency photocatalysts and could be driven by green energy such as sunlight.Pollutants can be efficiently in-situ degraded under the synergistic effects of adsorption and photocatalysis.In this paper,the lightweight construction strategies,morphological structures and pros and cons are summarized from the point of support styles.The advantages and disadvantages of typical composites preparation methods are analyzed and compared,and the applications of floating photocatalysts of different categories in the water treatment field are presented.By summarizing the problems of floating photocatalysts in practical applications,we point out that future research and development of floating photocatalysts should focus on the eco-friendly carriers and the stability of composites.Multifunctional floating photocatalysts as well as coupling technologies can be applied for promoting the large-scale application of high-efficiency photocatalysts in water treatment.