锰基异质结光催化材料在降解水体染料污染物中的研究进展

Research Progress of Recyclable Photocatalysts for Pollutants Degradation in Water

环境污染和能源危机逐渐成为了严峻的全球性挑战之一,迫切需要寻找到一种丰富的可再生能源来治理环境污染,光催化是一种性能优良、节能、反应条件温和的环境净化技术,可以有效降解水体有机染料污染物,具有比较良好的应用前景。光催化技术的关键在于光催化剂的开发,锰氧化物由于其独特的结构和性能,可以作为良好的光催化材料来应用于环境净化领域。然而,单组分锰基半导体光催化材料由于光生载流子体复合较快,使其在降解环境水体污染物的效率不理想,限制了其进一步的应用。在过去几年中,研究者们做出了重大努力,通过多种方法来提高锰基光催化剂的光催化效率,其中构建锰基半导体异质结来提高材料的光催化效率被认为是最有效的方法之一。因此,本文从锰基半导体材料的性质、异质结的构建等角度出发,总结了其在降解水体染料中的研究与进展。

Environmental pollution and the energy crisis are becoming one of the most serious global challenges, and there is an urgent need to find an abundant renewable energy source to combat environmental pollution. Photocatalysis is an environmental purification technology with excellent performance, energy saving and mild reaction conditions, which can effectively degrade organic dye pollutants in water bodies and has a relatively good application prospect. The key to photocatalysis technology lies in the development of photocatalysts, and manganese oxides can be used as good photocatalytic materials for environmental purification due to their unique structure and properties. However, single-component manganese-based semiconductor photocatalytic materials are less efficient in degrading environmental water pollutants due to the rapid compounding of photogenerated carriers, which limits their further applications. In the past few years,researchers have made significant efforts to improve the photocatalytic efficiency of manganese-based photocatalysts by various methods, among which the construction of manganese-based semiconductor heterojunctions to improve the photocatalytic efficiency of the materials is considered to be one of the most effective methods. Therefore, this paper summarises the research and progress of manganese-based semiconductor materials in the degradation of aqueous dyes from the perspectives of their properties and the construction of heterojunctions.