Modification strategies to enhance electrosorption performance of activated carbon electrodes for capacitive deionization applications

dc.contributor.authorSufiani, Omari
dc.contributor.authorElisadiki, Joyce
dc.contributor.authorMachunda, Revocatus L.
dc.contributor.authorJande, Yusufu A.C.
dc.date.accessioned2020-11-24T13:32:11Z
dc.date.available2020-11-24T13:32:11Z
dc.date.issued2019
dc.descriptionAbstract. Full text article available at https://doi.org/10.1016/j.jelechem.2019.113328en_US
dc.description.abstractCapacitive deionization (CDI) is the competitive technology for water desalination which appears to become an alternative to conventional methods such as ion exchange resins, reverse osmosis, and electrodeionization. Variety of materials including, carbide-derived carbon, activated carbons, carbon nanotubes, carbon aerogels and mesoporous carbons have been studied for CDI applications most of them being porous carbons. However, materials such as carbon nanotubes are highly expensive and hinder applications at large industrial scale. Activated carbon is a cheap and commercially available electrode material for CDI though its desalination capacity is limited by factors such as low electrical conductivity, inability to selectively remove specific ions, co-ion expulsion, poor wettability, inappropriate pore size distribution and lack of inter-pore connectivity to enable ion diffusion. These factors have raised a concern to most researchers and try to find a way to modify the surface of porous materials. Some strategies have been used to modify activated carbons including dip-coating in dopamine solution, mixing with quaternized poly (4-vinylpyridine), combining with graphenes and carbon nanotubes, direct fluorination and etching in acid solution to mention few. This review highlight factor(s) that cause low performance of activated carbon and modification strategies used to treat activated carbon to enhance its adsorption performance. Furthermore, characterization methods used to confirm whether the modification was successful and the practical application of modification methods have been discussed. To our view this work will provide an understanding of the contribution offered by modified activated carbon electrodes in the development of CDI technology.en_US
dc.identifier.citationSufiani, O., Elisadiki, J., Machunda, R. L., & Jande, Y. A. (2019). Modification strategies to enhance electrosorption performance of activated carbon electrodes for capacitive deionization applications. Journal of Electroanalytical Chemistry, 848, 113328.en_US
dc.identifier.otherDOI:10.1016/j.jelechem.2019.113328
dc.identifier.urihttp://hdl.handle.net/20.500.12661/2562
dc.language.isoenen_US
dc.publisherElsevieren_US
dc.subjectCapacitive deionizationen_US
dc.subjectCDIen_US
dc.subjectActivated carbonen_US
dc.subjectModification strategiesen_US
dc.subjectElectrical double layersen_US
dc.subjectEDLsen_US
dc.subjectCDI technologyen_US
dc.subjectWater desalinationen_US
dc.titleModification strategies to enhance electrosorption performance of activated carbon electrodes for capacitive deionization applicationsen_US
dc.typeArticleen_US
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