Organic Pollutant Remover

  • Author: Charlotte Koschnick
  • Published: 04 June 2018
  • Copyright: Wiley-VCH Verlag GmbH & Co. KGaA
  • Source / Publisher: Advanced Materials/Wiley-VCH
thumbnail image: Organic Pollutant Remover

Organic pollutants in water have an impact on both water ecosystems and human health. Therefore, their removal and prevention is of great interest. Metal-organic frameworks and activated carbons are the most common sorbent materials used. However, regeneration of these sorbents is costly, requires a lot of solvent, and does not restore the material to full performance.

A promising alternative is the use of aromatic rod amphiphiles. These consist of conjugated carbon and hydrophilic coil segments and can be tailored to reversibly sequester molecules of interest. Zhegang Huang, Sun Yat-sen University, China, and colleagues have synthesized a conjugated carbazole derivative to obtain a novel propeller-shaped aromatic amphiphile that aggregates into hollow porous spheres of approximately 7 nm in diameter (see picture). These pores provide an excellent carbon environment to adsorb dissolved organic contaminants.

Under addition of salt, the propeller segment flattened to enhance π-π-interactions. This causes the porous material to close and transform into non-porous solid fibers which provoke the spontaneous release of absorbed material. Once the salt is removed through dialysis, the pores are recovered, and the adsorption capacity of the material is fully restored.

The researchers tested the ability of the material to sequester the organic pollutants ethinyloestradiol (Eo) and bisphenol A (BPA) from water. It was found that 92 % and 90 % of the Eo and BPA were removed, respectively.


 

Article Views: 598

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