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Synthesis, characterization, antibacterial activity and VSM investigation of FeO–NiCrO nano oxide obtained from a new oxalato-bridged complex

Chemical Papers, ISSN: 1336-9075, Vol: 72, Issue: 2, Page: 487-495
2018
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The preparation of FeO–NiCrO nano-oxide (2) is reported via thermal decomposition of [Fe(phen)(HO)][(ox)Cr(μ-ox)Ni(phen)(μ-ox)Cr(ox)] (1) [phen = 1,10-phenanthroline; ox = oxalate] precursor complex for the first time. The complex 1 was characterized by FT-IR spectroscopy and elemental analysis. The thermal stability of complex 1 was also investigated. The composition of the nano oxide 2 was confirmed by energy-dispersive X-ray spectroscopy analysis and the cubic structure, was supported by powder X-ray diffraction. In addition, uniform morphology of the nano-oxide was illustrated by field-emission scanning electron microscopy. The elemental mapping was carried out and presented the distribution of Cr, Fe and Ni ions in nano oxide. In vitro antibacterial activity of 2 was investigated by using IZ and bacterium as per the colony count method against two gram-positive and two gram-negative bacteria. All the experiments revealed that the nano oxide had good effect on deactivating of bacteria. Finally, ferromagnetic behavior of 1 and paramagnetic feature of 2 were measured by vibrating sample magnetometer.

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