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Chementator: Nanotube membranes

By Chemical Engineering |

Researchers at the Lawrence Livermore National Laboratory (LLNL; Calif.; edlinks.chemengonline.com/5830-551) have constructed a membrane of carbon nanotubes (CNTs) on a silicone chip, which has the potential to reduce the energy costs of desalination by up to 75%, compared to conventional membranes used in reverse osmosis, says LLNL. The membrane is made by filling the space between billions of aligned CNTs with a ceramic matrix material. Simulations, which were verified by laboratory experiments, show that the membrane is permeable to water and gases, but blocks gold nanoparticles that are slightly larger than the pore diameter. The results were published in the May 19 cover story of Science magazine.   Click here for a full pdf version of the Chementator Section  
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