Preparation of Co3O4 nanoparticles by nonhydrolytic thermolysis of [Co(Pht)(H2O)]n polymers |
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Authors: | Fatemeh Mohandes Masoud Salavati-Niasari |
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Institution: | a Institute of Nano Science and Nano Technology, University of Kashan, Kashan, PO Box 87317-51167, Iran b Department of Inorganic Chemistry, Faculty of Chemistry, University of Kashan, Kashan, PO Box 87317-51167, Iran |
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Abstract: | Benzenedicarboxylate complexes, especially phthalate ones, can be significant precursors for the preparation of nano-sized metal and metal oxides. The injection of organic surfactants such as oleic acid (OA) and triphenylphosphine into molecular precursors has yielded samples with size control, narrow size distributions and crystallinity of individual nanocrystals. Fourier transform infrared and X-ray photoelectron spectroscopy revealed that the OA molecules were adsorbed on the ferromagnetic nanoparticles by chemisorption. The temperature-dependent magnetization curve in zero-field-cooled and field-cooled exhibit weak ferromagnetism of the Co3O4 nanoparticles. At 300 K the remanent magnetization is 0.02 emu/g, the coercive field is 441 Oe and the magnetization at saturation is 1.05 emu/g. |
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Keywords: | Magnetic nanoparticles Thermolysis Coordination polymers Oleic acid |
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