Journal
DESALINATION
Volume 276, Issue 1-3, Pages 199-206Publisher
ELSEVIER
DOI: 10.1016/j.desal.2011.03.044
Keywords
Nanoporous carbon; Capacitive deionization; MnO2
Categories
Funding
- University of South Australia
- ARC [LP0883282]
- Australian Research Council [LP0883282] Funding Source: Australian Research Council
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Capacitive deionization (CDI) is a technology for desalination and water purification that charged ions are electrosorbed on the porous electrodes, thus its performance largely affected by choice of electrodes. In this paper, the MnO2/nanoporous carbon composites were prepared and used as electrodes in CDI Salt removal efficiency for the MnO2/nanoporous carbon was 16.9 mu mol/g which was higher than 5,4 mu mol/g of the commercially available activated carbon (AC). The nanoporous carbons were synthesised using silica templates while their composites were prepared by a co-precipitation method and were characterised carefully. The capacitance of the MnO2/carbon composites (204.7 F/g) was higher than the AC (98.6 F/g). The capacitance increase may be attributed to the high surface area and suitable pore size distribution properties. Moreover, the MnO2 film provided a high surface adsorption capability and an effective cation intercalation. (C) 2011 Elsevier B.V. All rights reserved.
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