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

Abstract

In this study, a simple, rapid, and eco-friendly green method was introduced to synthesize magnetite nanoparticles (Fe3O4-NPs) successfully. Seaweed Kappaphycus alvarezii (K. alvarezii) was employed as a green reducing and stabilizing agents. The synthesized Fe3O4-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 Fe3O4 patterns, which showed the high purity and crystallinity of Fe3O4-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 Fe3O4 in the prepared nanoparticles. TEM image displayed the synthesized Fe3O4-NPs were mostly in spherical shape with an average size of 14.7 nm.

Catalytic degradation of methylene blue by iron nanoparticles synthesized using Galinsoga parviflora, Conyza bonariensis and Bidens pilosa leaf extracts

“…Green synthesized metallic nanoparticles exhibit unique physical, thermal, chemical, and catalytic properties, [1,2] and have found great application in health care as antiplasmodial [3], anticancer, and antimicrobial [4,5], synthetic biology and cellular transportation [6]. The most important feature responsible for their wide range use is attributed to their large surface area to volume ratio, stability, biocompatibility and have a high surface energy as well as unique adsorption phenomenon [7][8][9]. In addition, metal nanoparticles are a few hundred nanometers smaller than comparable large biological molecules such as enzymes, receptors and antibodies [1].…”

Suppressor capacity of iron nanoparticles biosynthesized using Salvia chloroleuca leaf aqueous extract on methadone‐induced cell death in PC12: Formulation a new drug from relationship between the nanobiotechnology and neurology sciences

“…In our review of literature, different sizes have been revealed for the biosynthesized FeNPs using plants extracts. For example, 7–14 nm for T. foenum‐graecum ; 20 nm for Dioscorea opposite ; 20–70 nm for eucalyptus leaf extracts; 9.2 nm for Daphne mezereum ; 60 to 300 nm for Amaranthus dubius ; 11.0 and 20.0 nm for Seaweed of Kappaphycus alvarezii ; 40–50 nm for oolong tea extract . 7.69 nm for Platanus orientalis ; 96 to 110 nm for Azardirachta indica ; 40 to 60 nm for tea extract …”

Green Route Synthesis and Preliminary Characterization of Iron Oxide Nanoparticles using Leaf Extract of Ocimum tenuiflorum

“…For the synthesis of IONPs, 1 mole of FeCl 2 .4H 2 O and 2 moles of FeCl 3 .6H 2 O were dissolved in 100 ml sterile DW and heated at 80 °C under constant stirring conditions. To this solution, 5 ml aqueous leaf extract of Ocimum tenuiflorum was added followed by dropwise addition of NaOH solution [33,34]. Continuous stirring was carried out during the entire synthesis process to ensure uniform mixing.…”