Investigation of self-cleaning effect of titanium dioxide surface under UV irradiation and water flow

在本研究中，我们发现在TiO2光催化剂膜表面同时进行紫外线照射和水流，可以获得有效的自清洁性能。即使紫外线强度与室内紫外线强度水平一样弱，但紫外线照射与水流同时进行，也会产生自洁效果。结果表明，即使在纳米~微米级的TiO2膜表面超亲水区域，吸附的污染物也能被有效地冲走。

In this study, it was found that simultaneous UV irradiation and water flow on TiO2 photocatalyst film surface brought about effective self-cleaning property. Even though the UV intensity is as weak as the indoor UV intensity level, self-cleaning effect appeared by simultaneous UV irradiation and water flow. It was suggested that adsorbed contaminant could be effectively washed away even at nano~micrometersized superhydrophilic domains of the TiO2 film surface.