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Graphene and graphene oxide for desalination
Yi You1, Veena Sahajwalla1, Masamichi Yoshimura2
1Centre for Sustainable Materials Research and Technology, School of Materials Science and Engineering, University of New South Wales, NSW 2052, Australia. veena@unsw.edu.au r.joshi@unsw.edu.au.
Nanoscale
|December 1, 2015
Summary
Graphene membranes show promise for desalination, achieving 100% salt rejection. Cost-effective fabrication of graphene oxide membranes with controlled pores could offer a practical filtration solution.
Area of Science:
- Materials Science
- Environmental Engineering
- Nanotechnology
Background:
- Graphene-based materials offer significant potential for advanced membrane applications in water desalination.
- Current research explores the efficacy of single-layer nonporous graphene in achieving high salt rejection rates.
Purpose of the Study:
- To investigate the feasibility of graphene oxide membranes for efficient desalination.
- To explore cost-effective fabrication methods for precise pore size control in graphene oxide membranes.
Main Methods:
- Utilizing single-layer nonporous graphene structures.
- Developing cost-effective fabrication procedures for graphene oxide membranes.
- Implementing precise control over membrane pore size.
Main Results:
- Demonstrated 100% salt rejection for common ions using single-layer nonporous graphene.
- Identified the potential for graphene oxide membranes to achieve 100% salt rejection with controlled pore sizes.
Conclusions:
- Single-layer nonporous graphene is highly effective for desalination.
- Cost-effective graphene oxide membranes with tailored pore sizes represent a practical approach for future desalination technologies.
