论文部分内容阅读
二氧化钛光催化纳米粒子具有捕获和分解有机与无机空气污染物的能力,它可用来设置路面涂层以减少车辆排放物的不利影响,具有重要的环境保护意义。该文旨在评估在沥青路面中加入二氧化钛之后的性能。分别对水质二氧化钛喷洒涂层进行了光催化效率与耐久性评估的室内评估,并对位于路易斯安那州的光催化沥青路面进行了现场测试。室内评估表明:二氧化钛对空气中氮氧化物的降解率达31%~55%;二氧化钛最佳喷洒量为0.05L/m2;氮氧化物降解率受污染物流动速率、相对湿度和紫外线光强影响。现场测试表明,在沥青路面喷涂二氧化钛薄膜后一氧化氮浓度明显下降。
Titanium dioxide photocatalytic nanoparticles have the ability to capture and decompose organic and inorganic air pollutants, which can be used to set the road surface coating to reduce the adverse effects of vehicle emissions, has important environmental protection significance. This article aims to evaluate the performance of titanium dioxide added to asphalt pavements. The evaluation of the photocatalytic efficiency and durability of the aqueous titanium dioxide spray coating was evaluated in house and the field test of the photocatalytic asphalt pavement in Louisiana was conducted. The indoor evaluation showed that the degradation rate of nitrogen oxides in air was 31% ~ 55% and the optimum spraying amount of titanium dioxide was 0.05L / m2. The degradation rate of nitrogen oxides was affected by the flow rate of pollutants, relative humidity and ultraviolet light intensity . Field tests showed that the concentration of nitric oxide dropped significantly after the titanium dioxide film was sprayed on the asphalt pavement.