| abstract |
The invention discloses a method for treating black and odorous water by utilizing sunlight, comprising the following steps: S1, preparing a nitrogen-doped titanium dioxide photocatalyst and a silica fixing plate; S2, loading the nitrogen-doped titanium dioxide photocatalyst on a On the silica fixing plate, the density of the silica fixing plate is close to that of water and floats on the water; S3. Use sunlight to irradiate the surface of the silica fixing plate attached to the titanium dioxide, and the titanium dioxide absorbs sunlight and undergoes an electronic transition to generate "electron" ‑hole pair”, the pollutants in the black and odorous water are adsorbed and oxidized in the “electron-hole pair”, decomposed into non-toxic products such as carbon dioxide and released. The titania photocatalyst is loaded on the silica fixing plate, so that the nitrogen-doped titania photocatalyst can be immersed in water for a long time without falling off, and the silica fixing plate plays the role of supporting the titania photocatalyst and improves the work of the catalyst time and optimize governance capabilities. |