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Prof. Talaat Younis Mohamed :: Publications:

Title:
One-pot solvothermal synthesis of novel cobalt salicylaldimine–urea complexes: A new approach to Co3O4 nanoparticles
Authors: M.Y. Nassar ⇑, T.Y. Mohamed, I.S. Ahmed
Year: 2013
Keywords: Not Available
Journal: Journal of Molecular Structure
Volume: 1050
Issue: Not Available
Pages: 81–87
Publisher: Not Available
Local/International: International
Paper Link: Not Available
Full paper Talaat Younis Mohamed_Mostafa Yassin Mohamed Yassin Nassar_One-pot solvothermal synthesis of novel cobalt salicylaldimine_urea complex.pdf
Supplementary materials Not Available
Abstract:

Three novel Cobalt salicylaldimine–urea complexes {[CoxLy(H2O)n]Clz; where, L = 1,3-bis(salicylaldehydimine) urea Schiff base; x, y = 1 or 2; n = 2 or 8; z = 0 or 2} were synthesized by one-pot solvothermal treatment of methanolic solutions of urea, salicylaldehyde, and cobalt chloride at 120 C for 3 h. Subsequently, normal spinel-type Co3O4 nanoparticles, with an average crystallite size in the range 22–38 nm, were easily produced via thermal decomposition of the synthesized complexes at 400 C for 2 h. The synthesized compounds were characterized by elemental analysis, thermal analysis (TG-DTA/DTG), X-ray powder diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), UV–Vis spectroscopy, transmission electron microscopy (TEM) and EI mass spectroscopy. Investigation of the optical properties of the produced cobalt oxide, using UV–Vis spectroscopy, confirmed its semiconducting properties by revealing two optical band gabs in the range of 1.42–1.50 and 1.83–1.95 eV.

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