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Reports from Tsinghua University Describe Recent Advances in Nanochannels

February 7, 2014

By a News Reporter-Staff News Editor at Science Letter -- New research on Nanochannels is the subject of a report. According to news originating from Beijing, People's Republic of China, by NewsRx correspondents, research stated, "Pressure-driven ultrafiltration membranes are important in separation applications. Advanced filtration membranes with high permeance and enhanced rejection must be developed to meet rising worldwide demand."

Our news journalists obtained a quote from the research from Tsinghua University, "Here we report nanostrand-channelled graphene oxide ultrafiltration membranes with a network of nanochannels with a narrow size distribution (3-5 nm) and superior separation performance. This permeance offers a 10-fold enhancement without sacrificing the rejection rate compared with that of graphene oxide membranes, and is more than 100 times higher than that of commercial ultrafiltration membranes with similar rejection. The flow enhancement is attributed to the porous structure and significantly reduced channel length. An abnormal pressure-dependent separation behaviour is also reported, where the elastic deformation of nanochannels offers tunable permeation and rejection. The water flow through these hydrophilic graphene oxide nanochannels is identified as viscous."

According to the news editors, the research concluded: "This nanostrand-channelling approach is also extendable to other laminate membranes, providing potential for accelerating separation and water-purification processes."

For more information on this research see: Ultrafast viscous water flow through nanostrand-channelled graphene oxide membranes. Nature Communications, 2013;4():1-9. Nature Communications can be contacted at: Nature Publishing Group, Macmillan Building, 4 Crinan St, London N1 9XW, England. (Nature Publishing Group -; Nature Communications -

The news correspondents report that additional information may be obtained from H.B. Huang, Tsinghua Univ, Center Nano & Micro Mech, Beijing 100084, People's Republic of China. Additional authors for this research include Z.G. Song, N. Wei, L. Shi, Y.Y. Mao, Y.L. Ying, L.W. Sun, Z.P. Xu and X.S. Peng (see also Nanochannels).

Keywords for this news article include: Asia, Beijing, Nanochannels, Nanotechnology, Emerging Technologies, People's Republic of China

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Source: Science Letter

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