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Carbon materialshave the advantages of good electrical conductivity and excellent chemicalstability, so many carbon materials have been introduced as electrodes for thecapacitive deionization CDI process. Due to the low surface area compared tothe other nanocarbonaceous materials, CNFs performance as electrode in the CDIunits is comparatively low. This problem has been overcome by preparing highsurface area carbon nanofibers and by creating numerous long pores on thenanofibers surface. The modified CNFs have been synthesized using low cost,high yield and facile method; electrospinning technique. Stabilization andgraphitization of electrospun nanofiber mats composed of polyacrylonitrile PAN and poly methylmethacrylate PMMA leads form longitudinal pores CNFs. The utilizedcharacterizations indicated that the CNFs obtained from electrospun solutionhaving 50% PMMA have surface area of 181 m2-g which are more than the conventional CNFs.Accordingly, these nanofibers revealed salt removal efficiency of ~90% andspecific capacitance of 237 F-g.

KEYWORDS

Capacitive Deionization; Carbon Nanofibers; Electrospinning; Multi-Channels CNFs; Desalination

Cite this paper

Barakat, N. , El-Deen, A. and Khalil, K. 2014 Effective Modified Carbon Nanofibers as Electrodes for Capacitive Deionization Process. Journal of Materials Science and Chemical Engineering, 2, 38-42. doi: 10.4236-msce.2014.21007.





Autor: Nasser A. M. Barakat, Ahmed G. El-Deen, Khalil Abdelrazek Khalil

Fuente: http://www.scirp.org/



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