Feng Yi, Wang Kun, Davies Chris H J, Wang Huanting
Department of Chemical Engineering, Monash University, Clayton, VIC 3800, Australia.
Department of Mechanical and Aerospace Engineering, Monash University, Clayton, VIC 3800, Australia.
Nanomaterials (Basel). 2015 Aug 20;5(3):1366-1378. doi: 10.3390/nano5031366.
Carbon nanotubes (CNTs) were incorporated into alumina/polyethersulfone hollow fibre membranes to enhance the mechanical property and the efficiency of water treatment. Results show that the incorporation of CNTs can greatly limit the formation of large surface pores, decrease the void size in support layers and improve the porosity and pore connectivity of alumina/polyethersulfone membranes. As a result of such morphology change and pore size change, both improved flux and rejection were achieved in such CNTs/alumina/polyethersulfone membranes. Moreover, the CNTs/alumina/PES membranes show higher antifouling ability and the flux recoveries after being fouled by bovine serum albumin (BSA) and humic acid were improved by 84.1% and 53.2% compared to the samples without CNT incorporation. Besides the improvement in water treatment performance, the incorporation of CNTs enhanced the tensile properties of inorganic/polymer membranes. Therefore, such CNTs/alumina/PES hollow fiber membranes are very promising candidates for good filter media in industry, considering their high efficiency and high mechanical properties.
将碳纳米管（CNTs）掺入氧化铝/聚醚砜中空纤维膜中，以提高其机械性能和水处理效率。结果表明，掺入碳纳米管可以极大地限制大表面孔隙的形成，减小支撑层中的空隙尺寸，并改善氧化铝/聚醚砜膜的孔隙率和孔隙连通性。由于这种形态变化和孔径变化，在这种碳纳米管/氧化铝/聚醚砜膜中实现了通量和截留率的提高。此外，碳纳米管/氧化铝/聚醚砜膜表现出更高的抗污染能力，与未掺入碳纳米管的样品相比，被牛血清白蛋白（BSA）和腐殖酸污染后的通量回收率分别提高了84.1%和53.2%。除了水处理性能的改善外，碳纳米管的掺入还增强了无机/聚合物膜的拉伸性能。因此，考虑到其高效率和高机械性能，这种碳纳米管/氧化铝/聚醚砜中空纤维膜是工业上优良过滤介质的非常有前途的候选材料。
