ISSN print edition: 0366-6352 ISSN electronic edition: 1336-9075 Registr. No.: MK SR 9/7 Published monthly

Synthesis, characterization, antibacterial activity and VSM investigation of Fe₃O₄–NiCr₂O₄ nano oxide obtained from a new oxalato-bridged complex

Parisa Iranmanesh, Hamideh Saravani, and Alireza Rezvani

University of Sistan and Baluchestan, Zahedan, Iran

E-mail: saravani@chem.usb.ac.ir

Abstract: The preparation of Fe₃O₄–NiCr₂O₄ nano-oxide (2) is reported via thermal decomposition of [Fe(phen)₂(H₂O)₂]₂[(ox)₂Cr(μ-ox)Ni(phen)(μ-ox)Cr(ox)₂] (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.

Keywords: Oxalato complex ; Thermal decomposition ; Nano particle ; Morphology ; Antibacterial activity 

Full paper is available at www.springerlink.com.

DOI: 10.1007/s11696-017-0301-x

Chemical Papers 72 (2) 487–495 (2018)