Selective Ion Penetration of Graphene Oxide Membranes
Top Cited Papers
- 12 December 2012
- journal article
- Published by American Chemical Society (ACS) in ACS Nano
- Vol. 7 (1), 428-437
- https://doi.org/10.1021/nn304471w
Abstract
The selective ion penetration and water purification properties of freestanding graphene oxide (GO) membranes are demonstrated. Sodium salts permeated through GO membranes quickly, whereas heavy-metal salts infiltrated much more slowly. Interestingly, copper salts were entirely blocked by GO membranes, and organic contaminants also did not infiltrate. The mechanism of the selective ion-penetration properties of the GO membranes is discussed. The nanocapillaries formed within the membranes were responsible for the permeation of metal ions, whereas the coordination between heavy-metal ions with the GO membranes restricted the passage of the ions. Finally, the penetration processes of hybrid aqueous solutions were investigated; the results revealed that sodium salts can be separated effectively from copper salts and organic contaminants. The presented results demonstrate the potential applications of GO in areas such as barrier separation and water purification.This publication has 26 references indexed in Scilit:
- Membrane-based processes for sustainable power generation using waterNature, 2012
- Graphene oxide as a chemically tunable platform for optical applicationsNature Chemistry, 2010
- Chemically Derived Graphene Oxide: Towards Large‐Area Thin‐Film Electronics and OptoelectronicsAdvanced Materials, 2010
- Impermeable Atomic Membranes from Graphene SheetsNano Letters, 2008
- Functionalized graphene sheets for polymer nanocompositesNature Nanotechnology, 2008
- Large-area ultrathin films of reduced graphene oxide as a transparent and flexible electronic materialNature Nanotechnology, 2008
- Science and technology for water purification in the coming decadesNature, 2008
- Synthesis of graphene-based nanosheets via chemical reduction of exfoliated graphite oxideCarbon, 2007
- Electric Field Effect in Atomically Thin Carbon FilmsScience, 2004
- Study of oxygen-containing groups in a series of graphite oxides: Physical and chemical characterizationCarbon, 1995