| Autor: |
Huang Z; School of Materials Science and Engineering , Wuhan University of Technology , Wuhan 430070 , China., Gurney RS; School of Materials Science and Engineering , Wuhan University of Technology , Wuhan 430070 , China., Wang Y; School of Materials Science and Engineering , Wuhan University of Technology , Wuhan 430070 , China., Han W; School of Materials Science and Engineering , Wuhan University of Technology , Wuhan 430070 , China., Wang T; School of Materials Science and Engineering , Wuhan University of Technology , Wuhan 430070 , China., Liu D; School of Materials Science and Engineering , Wuhan University of Technology , Wuhan 430070 , China. |
| Abstrakt: |
Durability under UV illumination remains a big challenge of TiO 2 -based superhydrophobic coatings, with the photocatalytic effect causing degradation of low-surface-energy material over time, resulting in the surfaces losing their hydrophobicity. We report surfaces made from tolylene-2,4-diisocyanate (TDI)/TiO 2 hybrid networks that demonstrate superhydrophobicity and superior UV durability. Structural and morphological studies reveal that the TDI/TiO 2 hybrid networks are composed of TiO 2 nanoparticles interconnected with TDI bridges and then encapsulated by a TDI layer. Through controlling the fraction of TDI in the synthesis process, the thickness of the TDI encapsulation layer around the TDI/TiO 2 hybrid networks can be varied. When the weight ratio of TDI/TiO 2 is 5:1, the superhydrophobicity of the hybrid network surface remains almost unchanged after a month of continuous UV illumination. This hybrid network surface can also clean methylene blue solution through the synergistic effects of cation adsorption and photocatalysis, holding promising potential for applications toward reducing cation pollutions in both liquid and air environments. |
