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Silver-titaniumdioxide composite nanoparticles imbedded in polyacrylonitrile PAN nanofibersand converted into carbon nanofibers by stabilization and calcination wasobtained and tested for capacitive deionization technology. First, the silverions were converted to metallic silver nanoparticles, through reduction ofsilver nitrate with dilute solution of PAN. Second, the TiO2 precursor Titanium Isopropoxide was added to the solution to form Ag-TiO2 composites imbedded in the PAN polymer solution. Last step involveselectrospinning of viscous PAN solution containing silver-TiO2 nanoparticles, thus obtaining PAN nanofibers containing silver-TiO2 nanoparticles. Scanning electron microscopy SEM revealed that the diameter ofthe nanofibers ranged between 50 and 300 nm. Transmission electron microscopyTEM and energy dispersive spectroscopy EDS showed silver-TiO2 nanoparticles dispersed on the surface of the carbon nanofibers. The obtainedfiber was fully characterized by measuring and comparing the FTIR spectra andthermogravimetric analysis TGA diagrams of PAN nanofiber with and withoutimbedded nanoparticles, in order to show the effect of silver-TiO2 nanoparticles on the electrospun fiber properties.

KEYWORDS

Polyacrylonitrile PAN Nanofibers; Carbon Nanofibers; Electrospinning; Silver-TiO2 Nanoparticles

Cite this paper

Khalil, K. , Eltaleb, H. , Abdo, H. , Al-Deyab, S. and Fouad, H. 2014 Carbon Nanofibers Containing Ag-TiO2 Composites as a Preliminary Stage for CDI Technology. Journal of Materials Science and Chemical Engineering, 2, 31-37. doi: 10.4236-msce.2014.21006.





Autor: Khalil Abdelrazek Khalil, Hamoud Eltaleb, Hany S. Abdo, Salem S. Al-Deyab, H. Fouad

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



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