Maggos Th, Bartzis J G, Liakou M, Gobin C
Environmental Research Laboratory, INT-RP, NCSR "Demokritos", 153 10 Aghia Paraskevi, Athens, Greece.
J Hazard Mater. 2007 Jul 31;146(3):668-73. doi: 10.1016/j.jhazmat.2007.04.079. Epub 2007 Apr 21.
An indoor car park was appropriately equipped in order to test the de-polluting efficiency of a TiO(2)-containing paint in an indoor polluted environment, under real scale configuration. Depollution tests were performed in an artificially closed area of the parking, which was polluted by a car exhaust during the testing period. The ceiling surface of the car park was covered with white acrylic TiO(2)-containing paint (PP), which was developed in the frame of the EU project 'PICADA' (Photocatalytic Innovative Coverings Application for Depollution Assessment). The closed area was fed with car exhaust gases. As soon as the system reached steady state, the UV lamps were turned on for 5h. The difference between the final and the initial steady state concentration indicates the removal of the pollutants due to both the photocatalytic paint and car emission reduction. Results showed a significant photocatalytic oxidation of NO(x) gases. The photocatalytic removal of NO and NO(2) was calculated to 19% and 20%, respectively, while the photocatalytic rate (microgm(-2)s(-1)) ranged between 0.05 and 0.13 for NO and between 0.09 and 0.16 for NO(2).
为了在实际规模配置下测试含TiO₂ 涂料在室内污染环境中的净化效率，配备了一个室内停车场。净化测试在停车场的一个人工封闭区域进行，在测试期间该区域被汽车尾气污染。停车场的天花板表面覆盖着白色含丙烯酸TiO₂ 的涂料（PP），这是在欧盟项目“PICADA”（用于污染评估的光催化创新覆盖物应用）框架内开发的。向封闭区域输送汽车尾气。一旦系统达到稳态，就打开紫外线灯照射5小时。最终稳态浓度与初始稳态浓度之间的差异表明由于光催化涂料和汽车排放减少导致污染物的去除。结果显示NO(x) 气体有显著的光催化氧化。NO和NO₂ 的光催化去除率分别计算为19%和20%，而NO的光催化速率（微克每平方米每秒）在0.05至0.13之间，NO₂ 的光催化速率在0.09至0.16之间。
