کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
624413 | 1455408 | 2011 | 4 صفحه PDF | دانلود رایگان |
Self-supporting bucky-papers membranes were processed from chemical vapour deposition grown carbon nanotubes and coated with a thin layer of poly(tetra-fluoro-ethylene) (PTFE) to enhance their hydrophobicity and improve their mechanical stability over time, without drastically changing their average pore size and porosity. Contact angles and bubble point pressure were respectively increased by 23% and 28%. After coating the membranes were tested in a direct contact membrane distillation setup at various feed temperatures with 35 g/L NaCl feed solution and coated samples exhibited improved lifespan and water vapour permeability at salt rejection higher than 99%. The bucky-paper membranes were also compared with commercial PTFE membranes of similar properties.
Research Highlights
► PTFE/carbon nanotube bucky-papers composites were fabricated by sputtering PTFE on top of a performed self-supporting bucky-paper.
► The samples were characterized and the membrane permeability performance tested in a direct contact membrane distillation rig.
Journal: Desalination - Volume 283, 1 December 2011, Pages 64–67