Synthesis of NiFe2O4/sawdust nanocomposite for oil-water separation

Document Type : Original Research Paper


1 Department of chemistry, Science and Research Branch, Islamic Azad University, Tehran, Iran

2 Department of Chemistry, Science and Research Branch, Islamic Azad University, Tehran, Iran

3 Department of chemistry, North Tehran Branch, Islamic Azad University, Tehran, Iran


organic solvents. In this study, NiFe2O4/sawdust nanocomposite was synthesized for removing
oil pollutants. The oil-adsorbing nanocomposite could be easily separated from water by
magnet bar. The XRD results show tetragonal phase proving the composite formation. The
FESEM pictures successfully reveal the growth of NiFe2O4 on the sawdust template. The FTIR
bands at 422 cm-1 and 615 cm-1correspond to the metal oxygen stretching band. VSM hysteresis
loop proves the superparamagnetism of the composite. In addition contact angle depicts
hydrophobic properties of the resulted nanocomposite. More importantly, as-prepared
nanocomposite exhibited high oil adsorption capacity and good reusability. Our studies show
easy synthesis and fast method for oil removal from water. Facile synthesis procedure, high
oil adsorption capacity, fast and simple magnetic separation and reusability of nanoadsorbent
are among the benefits of these composite. This approach will open up new fields of studies
in polluted-water treatment.