Gunatilake Udara Bimendra, Bandara Jayasundera
National Institute of Fundamental Studies, Hantana Road, CP 20000, Kandy, Sri Lanka.
National Institute of Fundamental Studies, Hantana Road, CP 20000, Kandy, Sri Lanka.
Chemosphere. 2017 Mar;171:134-141. doi: 10.1016/j.chemosphere.2016.12.031. Epub 2016 Dec 10.
In this report, we investigated the TiO nanofibers coated stainless steel mesh as a novel underwater superoleophobic membrane for the effective separation of contaminated oil-water mixtures. The membrane was fabricated by spray deposition of hydrothermally synthesized TiO nanofibers on stainless steel mesh. The fabricated membrane exhibits superhydrophilicity and supereleophobicity properties in air and underwater respectively allowing the separation of oil-water efficiently. Randomly deposited TiO nanofibers on mesh exhibit rough surface property and hence superhydrophilic nature. Water oil separation efficiencies of ∼90 and ∼99% were achieved with this filter for less viscous and highly viscous oil respectively. Additionally, the TiO nanofibers coated mesh can degrade immiscible organic molecules due to photocatalytic activity of TiO nanofibers under UV light. As a result of self-cleaning property of TiO nanofibers coated mesh, the durability of the filter membrane is enhanced.
在本报告中，我们研究了涂覆有TiO纳米纤维的不锈钢网作为一种新型水下超疏油膜，用于有效分离受污染的油水混合物。该膜是通过将水热合成的TiO纳米纤维喷涂沉积在不锈钢网上制成的。所制备的膜在空气中和水下分别表现出超亲水性和超疏油性，从而能够高效地分离油水。随机沉积在网上的TiO纳米纤维具有粗糙的表面特性，因此具有超亲水性。使用该过滤器分别对低粘度油和高粘度油实现了约90%和约99%的水油分离效率。此外，涂覆有TiO纳米纤维的网由于TiO纳米纤维在紫外光下的光催化活性，可以降解不混溶的有机分子。由于涂覆有TiO纳米纤维的网具有自清洁特性，提高了过滤膜的耐久性。
