| Synthesis, Characterization and Effect of Precipitating
Agent on the Antibacterial Properties of Cobalt
Ferrite Nanoparticles |
Shanmugam Sumathi,* Mopuri Nehru and R. Vidya1
pages : 79-82
DOI : 10.1080/0371750X.2015.1011791 |
| Abstract |
| Cobalt ferrite nanoparticles have been synthesized by co-precipitation method using three different precipitating
agents, viz. ammonium hydroxide, sodium hydroxide and monoethanolamine. The average particle size of the
nanoparticles varied in the range 17-70 nm by varying the precipitating agents. The phase formation of the
synthesized nanoparticles was performed via X-ray diffraction. Fourier infrared spectroscopy also confirmed
the product formation. The microstructure and elemental composition were characterized by scanning electron
microscopy and energy dispersive X-ray spectroscopy respectively. The precipitating agents were varied to
vary the size and to study the effect of size on the morphology and antibacterial properties. The effect of
precipitating agents and particle size on the antibacterial activity was carried out against the microorganism
Staphylococcus aureus (gram positive bacteria) quantitatively by spread plate method.
[Keywords: Cobalt ferrite, Nanoparticles, Co-precipitation, S.aureus, Spread plate method] |
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