Green Synthesis of Magnetite (Fe3O4) Nanoparticles Using Seaweed (Kappaphycus alvarezii) Extract

• Published in: Nanoscale research letters 2016-12, Vol.11 (1), p.276-276, Article 276
• Main Authors: Yew, Yen Pin, Shameli, Kamyar, Miyake, Mikio, Kuwano, Noriyuki, Bt Ahmad Khairudin, Nurul Bahiyah, Bt Mohamad, Shaza Eva, Lee, Kar Xin
• Format: Article
• Language: English
• Subjects: Chemistry and Materials Science; Materials Science; Molecular Medicine; Nano; Nano Commentary; Nanochemistry; Nanoscale Science and Technology; Nanotechnology; Nanotechnology and Microengineering
• ISSN: 1931-7573; 1556-276X
• DOI: 10.1186/s11671-016-1498-2

In this study, a simple, rapid, and eco-friendly green method was introduced to synthesize magnetite nanoparticles (Fe 3 O 4 -NPs) successfully. Seaweed Kappaphycus alvarezii ( K. alvarezii ) was employed as a green reducing and stabilizing agents. The synthesized Fe 3 O 4 -NPs were characterized with X-ray diffraction (XRD), ultraviolet-visible spectroscopy (UV-Vis), Fourier transform infrared (FT-IR), and transmission electron microscopy (TEM) techniques. The X-ray diffraction planes at (220), (311), (400), (422), (511), (440), and (533) were corresponding to the standard Fe 3 O 4 patterns, which showed the high purity and crystallinity of Fe 3 O 4 -NPs had been synthesized. Based on FT-IR analysis, two characteristic absorption peaks were observed at 556 and 423 cm −1 , which proved the existence of Fe 3 O 4 in the prepared nanoparticles. TEM image displayed the synthesized Fe 3 O 4 -NPs were mostly in spherical shape with an average size of 14.7 nm.