纳米TiO2基催化剂在环保功能路面应用的研究进展

Research Progress on the Application of Nanoscale TiO2-Based Catalysts in the Environment-Friendly Pavement

TiO2光催化纳米粒子因其具有捕捉和分解空气污染物的能力,作为清洁功能型材料被广泛应用于路面中,且前景可观。在近几年国内外研究的基础上,对纳米TiO2应用于路面降解汽车尾气的研究进行了较全面总结。首先介绍了纳米TiO2光催化降解汽车尾气的作用机理;其次对纳米TiO2的改性理论和改性效果进行了总结和论述;然后介绍了纳米TiO2降解NOx的研究情况以及掺杂纳米TiO2的路面的尾气降解性能和路面使用性能;最后对目前该领域存在问题进行探讨,并展望了将纳米TiO2应用于路面降解汽车尾气的发展趋势。

The TiO2 photocatalytic nanoparticles have been widely used in pavement as cleaning function materials due to the ability of catching and resolving the air pollutant,which have an excellent prospect.This paper summarizes the application research of nano TiO2 on pavement for the degradation of vehicle exhaust on the basic of domestic and foreign research in recent years.Firstly,the photocatalytic degradation mechanism of vehicle exhaust by nano TiO2 was introduced.Secondly,the modification mechanism and the modification effect of nano TiO2 were summarized and discussed.Moreover,the studies on the degradation of NO x by nano TiO2 were introduced,the degradation performance of tail gas and pavement performance of pavement containing nano TiO2 were analyzed.Finally,some problems in this field were discussed,and the development trend and the application prospect of nano TiO2 on pavement for the degradation of vehicle exhaust were prospected.