cobalt(ii) macrocycle complexes based synthesis of co3o4 nanoparticles: structural and spectral characterization

in this paper, macrocyclic cobalt(ii) complexes [col1](no3)2.4h2o (1) and [col2](no3)2.2h2o (2) have been synthesized from the reaction of dialdehydes 1,2-bis(2-formylphenyl)ethane and 1,3-bis(2-formylphenyl)propane, co(no3)2.6h2o and 1,2-cyclohexanediamine with molar ration 1:1:1 in methanole and characterized by elemental analyses and ft-ir spectroscopy. then used as precursors for preparation of co3o4 nanoparticles via solid-state thermal decomposition without the need a catalyst, employing toxic solvent, template or surfactant and complicated equipment, which makes it efficient, one-step, simple and environment-friendly. the structure and morphology of the co3o4 products were characterized by ft-ir spectroscopy, xrd and tem. the xrd result shows that the co3o4 products are pure, single phase and crystalline. the tem result shows co3o4 nanoparticles with the size between