Graphene Oxide Membranes for Organic Solvent Filtration

  • Author: Charlotte Koschnick
  • Published: 27 November 2017
  • Copyright: Wiley-VCH Verlag GmbH & Co. KGaA
  • Source / Publisher: Nature Materials/Nature Publishing Group
thumbnail image: Graphene Oxide Membranes for Organic Solvent Filtration

Filtration of water and organic solutions plays an important role for applications such as water purification. Graphene oxide (GO) membranes are known for their mechanical robustness, making them attractive for molecular separation and filtration applications. However, nanofiltration through GO membranes is limited to aqueous solutions because organic solvents cannot permeate GO membranes.


Rahul Raveendran Nair, University of Manchester, UK, and colleagues have developed highly laminated GO (HLGO) membranes that are thin enough to permit the fast permeation by both water and organic solvents. The exceptionally thin GO laminates (as thin as 8 nm) are made from randomly stacked 10-20 µm large GO flakes. Due to the random stacking of the GO flakes, the thin layers contain pinholes between the flakes that allow solvent permeation.


The team performed filtration experiments using dye-containing methanol solutions. More than 99.9 % of the dye molecules were rejected, showing the potential of HLGO membranes for organic solvent filtration.


 

Article Views: 713

Sign in Area

Please sign in below

Additional Sign In options

Please note that to comment on an article you must be registered and logged in.
Registration is for free, you may already be registered to receive, e.g., the newsletter. When you register on this website, please ensure you view our terms and conditions. All comments are subject to moderation.

Article Comments - To add a comment please sign in

Bookmark and Share

If you would like to reuse any content, in print or online, from ChemistryViews.org, please contact us first for permission. more


CONNECT:

ChemistryViews.org on Facebook

ChemistryViews.org on Twitter ChemistryViews.org on YouTube ChemistryViews.org on LinkedIn Sign up for our free newsletter


A product of ChemPubSoc Europe (16 European Chemical Societies)and Wiley-VCH