5 years ago

Synthesis of highly stable UiO-66-NH2 membranes with high ions rejection for seawater desalination

Synthesis of highly stable UiO-66-NH2 membranes with high ions rejection for seawater desalination
Compact and phase-pure UiO-66-NH2 membranes were synthesized on the 3-aminopropy-ltriethoxysilane (APTES) modified macroporous Al2O3 tubes through a repeated synthesis strategy. APTES acts as a molecular linker for anchoring the metal ions onto the support surface to promote the nucleation and the crystallization of UiO-66-NH2 membrane. Therefore, well-intergrown UiO-66-NH2 membranes could be prepared through a repeated synthesis method on the APTES-modified macroporous Al2O3 tubes. The developed UiO-66-NH2 membranes were evaluated for seawater desalination by pervaporation. It is found that the UiO-66-NH2 membranes show high desalination performances attributing to the narrow pore size which is exactly in between the size of water molecules and hydrated ions. With increasing the feed temperature from 318 to 363 K, the water fluxes increase from 1.5 to 12.1 kg m−2 h−1, with ions rejections of above 99.7%. Further, the UiO-66-NH2 membranes display high stability for a long time in seawater desalination, which is very promising for seawater desalination.

Publisher URL: www.sciencedirect.com/science

DOI: S1387181117304286

You might also like
Discover & Discuss Important Research

Keeping up-to-date with research can feel impossible, with papers being published faster than you'll ever be able to read them. That's where Researcher comes in: we're simplifying discovery and making important discussions happen. With over 19,000 sources, including peer-reviewed journals, preprints, blogs, universities, podcasts and Live events across 10 research areas, you'll never miss what's important to you. It's like social media, but better. Oh, and we should mention - it's free.

  • Download from Google Play
  • Download from App Store
  • Download from AppInChina

Researcher displays publicly available abstracts and doesn’t host any full article content. If the content is open access, we will direct clicks from the abstracts to the publisher website and display the PDF copy on our platform. Clicks to view the full text will be directed to the publisher website, where only users with subscriptions or access through their institution are able to view the full article.