Synergistic High-flux Oil–Saltwater Separation and Membrane Desalination with Carbon Quantum Dots Functionalized Membrane uri icon

abstract

  • Copyright © 2019 American Chemical Society. The treatment of offshore oil spills requires effective oil-water separation, where oil would be recovered and the collected seawater would be used to generate fresh water for an emergency water supply. Herein, a hydrophobic membrane was fabricated simply by a controlled cross-linking reaction between C18-CQDs (octadecylamine-functionalized carbon quantum dots) and commercial textiles using tolylene-2,4-diisocyanate. The modified membrane not only achieved efficient oil-saltwater separation (up to 99%) but also exhibited unique permselectivity: highly permeable to water vapor yet impermeable to liquid water, which is feasible for water desalination. Our research offers an "all-in-one" prototype for oil-water separation and saltwater desalination using a single type membrane.

author list (cited authors)

  • Lei, S., Zeng, M., Huang, D., Wang, L., Zhang, L., Xi, B., ... Cheng, Z.

citation count

  • 12

complete list of authors

  • Lei, Shijun||Zeng, Minxiang||Huang, Dali||Wang, Ling||Zhang, Lecheng||Xi, Beidou||Ma, Wenchao||Chen, Guanyi||Cheng, Zhengdong

publication date

  • August 2019