【摘要】 简述了汽车尾气净化过程中使用纳米TiO₂光催化材料的降解反应原理，系统梳理了纳米TiO₂光催化路面材料的研究进展和当前该材料在混凝土路面、沥青路面及道路沿线附属设施上的应用现状，分析了该技术在降解汽车尾气方面存在的问题，并给出了在道路工程领域中应用的建议：1)对纳米TiO₂光催化材料进行改性，解决其催化效率低的问题；2)采用多孔光催化材料，解决现有路面光催化材料与尾气接触不充分问题；3)加强光催化涂层与基体的粘结力，解决光催化涂层易于脱落问题；4)对光催化产物进行深入处理，多管齐下，在道路工程中建立高质量的光催化体系。更多还原

【Abstract】 The degradation reaction principle of Nano-TiO₂photocatalytic material used in the process of automobile exhaust gas purification is briefly discussed in this paper.The research progress of Nano-TiO₂ photocatalytic pavement materials is systematically sorted as well as its current applications in concrete pavements,asphalt pavementsand roadside facilities.Some application problems of the technology in automobile exhaust degradation are analyzed to propose suggestion as follows:1) Nano-TiO₂ photocatalytic materials is modified to solve the problem of low catalytic efficiency;2) Porous photocatalytic material is applied to solve the problem of insufficient contact of existing road photocatalytic material with exhaust gas;3) The adhesion between the photocatalytic coating and the substrate is strengthened to solve the problem that the photocatalytic coating is easy to fall off;4) Photocatalytic products are thoroughly treated by multi measures to establish a high-quality photocatalytic system in road engineering.更多还原