“…The compatibility of these applications is mainly controlled by phase, size and morphology of nanomaterials. Several methods have been reported on the synthesis of different sizes and morphologies of iron oxide Fe 3 O 4 and γ-Fe 2 O 3 nanoparticles which mainly involve simple wet chemical [15,19,[26][27][28][29][30], hydrothermal [9,[31][32][33], electrochemical [34] and microwave methods [35,36]. Since magnetite nanoparticles are susceptible to oxidation by atmospheric oxygen, the synthesis of this oxide is best performed in presence of protecting agents like PPy [31], polyethylene glycol [35] and reducing agents like trisodium citrate and ethylene glycol [31].…”