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PubMed Publications| Keyword search (4,163 papers available) |  |
"HILIC" Keyword-tagged Publications:
| Title: | Robust self-cleaning membrane with superhydrophilicity and underwater superoleophobicity for oil-in-water separation | ||||
| Authors: | Yue RY, Yuan PC, Zhang CM, Wan ZH, Wang SG, Sun X | ||||
| Link: | https://pubmed.ncbi.nlm.nih.gov/37068616/ | ||||
| DOI: | 10.1016/j.chemosphere.2023.138706 | ||||
| Publication: | Chemosphere | ||||
| Keywords: | Oil-in-water separation; Photo-induced superhydrophilicity; Self-cleaning; Underwater superoleophobic; g-C(3)N(4)/TiO(2)/PVDF; | ||||
| PMID: | 37068616 | Category: | Date Added: | 2023-04-18 | |
| Dept Affiliation: |
ENCS
1 School of Resources and Environmental Engineering, Hefei University of Technology, Hefei, 230009, China; Shandong Key Laboratory of Water Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Shandong University, Qingdao, 266237, China; Department of Building, Civil and Environmental Engineering, Concordia University, Montreal, H3G 1M8, Canada. 2 Shandong Key Laboratory of Water Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Shandong University, Qingdao, 266237, China. 3 School of Resources and Environmental Engineering, Hefei University of Technology, Hefei, 230009, China; Shandong Key Laboratory of Water Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Shandong University, Qingdao, 266237, China. 4 School of Resources and Environmental Engineering, Hefei University of Technology, Hefei, 230009, China. 5 School |
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Description: |
The discharge of oily wastewater has increased dramatically and will bring serious environmental problems. In this work, a self-cleaning and anti-fouling g-C3N4/TiO2/PVDF composite membrane was fabricated via the layer-by-layer approach. The surface of as-prepared composite membrane displayed a superhydrophilic and underwater superoleophobic behavior under irradiation with visible light. Also, upon irradiation with visible light, the fabricated g-C3N4/TiO2/PVDF composite membrane displayed enhanced permeation flux and improved oil removal efficiency as a result of the generation of hydroxyl free radicals during the photocatalytic filtration process. Significantly, irradiation with visible light remarkably improved reusability of the composite membrane by initiating photocatalytic decomposition of deposited oil foulants, which enabled removal of over 99.75% of oils, thus reaching a nearly 100% flux recovery ratio. Furthermore, the g-C3N4/TiO2/PVDF composite membrane exhibited great anti-fouling behavior in photocatalysis-assisted filtration. The mechanistic study revealed that underwater superhydrophobicity and the generation of free hydroxyl radicals jointly contributed to membrane anti-fouling. The greatest advantages of this g-C3N4/TiO2/PVDF composite membrane are that not only does it degrades the oil pollutants, but it also makes the membrane less vulnerable to fouling. |
