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Gravity-Driven Separation of Oil/Water Mixture by Porous Ceramic Membranes with Desired Surface Wettability
| Content Provider | MDPI |
|---|---|
| Author | Ren, Chunlei Chen, Wufeng Chen, Chusheng Winnubst, Louis Yan, Lifeng |
| Copyright Year | 2021 |
| Description | Porous Al2O3 membranes were prepared through a phase-inversion tape casting/sintering method. The alumina membranes were embedded with finger-like pores perpendicular to the membrane surface. Bare alumina membranes are naturally hydrophilic and underwater oleophobic, while fluoroalkylsilane (FAS)-grafted membranes are hydrophobic and oleophilic. The coupling of FAS molecules on alumina surfaces was confirmed by Thermogravimetric Analysis and X-ray Photoelectron Spectroscopy measurements. The hydrophobic membranes exhibited desired thermal stability and were super durable when exposed to air. Both membranes can be used for gravity-driven oil/water separation, which is highly cost-effective. The as-calculated separation efficiency (R) was above 99% for the FAS-grafted alumina membrane. Due to the excellent oil/water separation performance and good chemical stability, the porous ceramic membranes display potential for practical applications. |
| Starting Page | 457 |
| e-ISSN | 19961944 |
| DOI | 10.3390/ma14020457 |
| Journal | Materials |
| Issue Number | 2 |
| Volume Number | 14 |
| Language | English |
| Publisher | MDPI |
| Publisher Date | 2021-01-19 |
| Access Restriction | Open |
| Subject Keyword | Materials Polymer Science Oil/water Separation Porous Alumina Fas Grafting Hydrophilic/underwater Oleophobic Hydrophobic/oleophilic |
| Content Type | Text |
| Resource Type | Article |
