Superhydrophobic modification of an Al2O3 microfiltration membrane with TiO2 coating and PFDS grafting
Yu, Yun; Hou, W; Hu, X; Yu, Y; Mi, Le; Song, L
| HERO ID | 3859517 |
|---|---|
| In Press | No |
| Year | 2014 |
| Title | Superhydrophobic modification of an Al2O3 microfiltration membrane with TiO2 coating and PFDS grafting |
| Authors | Yu, Yun; Hou, W; Hu, X; Yu, Y; Mi, Le; Song, L |
| Journal | RSC Advances |
| Volume | 4 |
| Issue | 89 |
| Page Numbers | 48317-48321 |
| Abstract | A novel superhydrophobic Al2O3 microfiltration membrane was prepared by the layer-by-layer assembly of TiO2 coating with subsequent fluorination grafting surface treatment by 1H,1H,2H,2H-perfluorodecyltriethoxysilane. The influence of surface morphology on membrane superhydrophobicity, pore size diameter distributions and pure water permeability of the different membranes were studied. By optimizing the grafting parameters, a needle-like surface of grafted TiO2-coated Al2O3 membrane with a water contact angle of 169.5 degrees was obtained. The pure water permeability of different membranes varied from 100 l m(-2) h(-1) bar(-1) before grafting to 3-5 l m(-2) h(-1) bar(-1) after grafting, and the grafted superhydrophobic membrane showed excellent water repellence. The novel superhydrophobic membrane is shown to be promising for liquid-liquid and gas-liquid separation. |
| Doi | 10.1039/c4ra07485h |
| Wosid | WOS:000343709600043 |
| Is Certified Translation | No |
| Dupe Override | No |
| Is Public | Yes |