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Updated: Jun 15, 2026
07:55
Ion-Exchange Membranes for the Fabrication of Reverse Electrodialysis Device
Published on: July 20, 2021
Improving the capacitive deionisation performance by optimising pore structures of the electrodes.
1SA Water Centre for Water Management and Reuse, University of South Australia, Mawson Lakes, Adelaide 5095, Australia. linda.zou@unisa.edu.au
Summary
Ordered mesoporous carbons (OMCs) with nickel salts show enhanced ion adsorption for desalination. These novel materials outperform activated carbons in electrosorptive deionization applications.
Area of Science:
- Materials Science
- Electrochemistry
- Environmental Engineering
Background:
- Developing efficient desalination technologies is crucial for addressing global water scarcity.
- Ordered mesoporous carbons (OMCs) offer tunable pore structures for adsorption applications.
- Activated carbons (ACs) are widely used but have limitations in performance.
Purpose of the Study:
- To synthesize and characterize novel ordered mesoporous carbons (OMCs) for desalination.
- To investigate the impact of pore structure and nickel incorporation on desalination performance.
- To compare the electrosorptive deionization capabilities of OMCs with traditional activated carbons.
Main Methods:
- Synthesis of OMCs using a template method and a modified sol-gel process with nickel salts.
- Characterization of pore arrangement (ordered vs. random) and pore size distribution (mesoporous vs. microporous).
- Electrosorptive deionization experiments using a flow-through apparatus in dilute NaCl solution.
Main Results:
- OMCs synthesized with nickel salts exhibited higher specific capacitances compared to those without nickel and ACs.
- OMCs with nickel demonstrated superior ion adsorption capacities (15.9 micromol g(-1)) compared to OMCs without nickel (10.3 micromol g(-1)) and ACs (4.7 micromol g(-1)).
- Pore structure and nickel incorporation significantly influence electrosorptive desalination performance.
Conclusions:
- Nickel incorporation enhances the performance of OMCs for electrosorptive desalination.
- OMCs present a promising alternative to ACs for efficient water deionization.
- The developed OMCs show potential for practical application in water treatment.
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