Fig. 1From: Green Synthesis of Magnetite (Fe3O4) Nanoparticles Using Seaweed (Kappaphycus alvarezii) Extract a Solution of Fe3+ and Fe2+ with 2:1 M ratio and seaweed K. alvarezii extract. b K. alvarezii/Fe3O4-NPs. c Separation of synthesized Fe3O4-NPs from reaction mixture using an external magnetBack to article page