In the past, studies have found that the infiltration of the TiO2 surface of ultraviolet irradiation from water sparse to hydrophilic has been transformed. For a long time, it is not completely clear whether the TIO2 surface is hydrophilic or hydrophilic at room temperature.

CHEMICAL Science "(Chemical Science) magazine in September published the research on the research of the Shanghai Academy of Higher Research and the joint scientific research team on the problem of titanium hydrophobic hydrophilic at room temperature and made progress.

titanium dioxide (TI1Ti1Ti1Ti1Ti1Ti1Ti O2) Materials due to excellent ones The optical catalytic performance is used in cosmetics, antibacterial removal and catalytic system. The problem is not completely clear.

TIO2's crystal surface, frequent resonance spectrum experiments and theory find the orderly double layer of water structure on the surface, which causes water droplets on the water layer. Courtyard researcher Wang Chunlei and the joint research team led by Gao Yan, take the Rutile crystal type 110 face of TIO2 as an example. It is found by the surface and frequency vibration dynamic spectrum theory calculation and experiments. There are sequential water layers, and then the classic molecular dynamics simulation based on traditional force field+machine learning training strength field further discovered that the orderly water causes water droplets on the water to exist (about 25 degrees contact angle), that is, incomplete infiltration of normal temperature occurs. The two -layer orderly water phenomenon. Basic issues of hydrophilicity on the surface of TIO2. Based on this new mechanism, we can explore the mechanism of UV irradiation TIO2 from hydrophobic to hydrophilic transformation: surface OH or oxygen defects will damage the orderly water layer, and then then Enhance the hydrophilicity of the surface water layer. The phenomenon.

appropriation $ 10.9 million pushed ceramic electrolyte battery projects