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Carbon Nanofibers Containing Ag/TiO2 Composites as a Preliminary Stage for CDI Technology

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DOI: 10.4236/msce.2014.21006    3,917 Downloads   6,801 Views   Citations

ABSTRACT

Silver/titanium dioxide composite nanoparticles imbedded in polyacrylonitrile (PAN) nanofibers and converted into carbon nanofibers by stabilization and calcination was obtained and tested for capacitive deionization technology. First, the silver ions were converted to metallic silver nanoparticles, through reduction of silver 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 involves electrospinning of viscous PAN solution containing silver/TiO2 nanoparticles, thus obtaining PAN nanofibers containing silver/TiO2 nanoparticles. Scanning electron microscopy (SEM) revealed that the diameter of the nanofibers ranged between 50 and 300 nm. Transmission electron microscopy (TEM) and energy dispersive spectroscopy (EDS) showed silver/TiO2 nanoparticles dispersed on the surface of the carbon nanofibers. The obtained fiber was fully characterized by measuring and comparing the FTIR spectra and thermogravimetric analysis (TGA) diagrams of PAN nanofiber with and without imbedded nanoparticles, in order to show the effect of silver/TiO2 nanoparticles on the electrospun fiber properties.

Conflicts of Interest

The authors declare no conflicts of interest.

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.

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