“Green Synthesis of nanoparticles (Ag, Fe3O4) using Baccurea ramiflora and Calamus tenuis: Characterization and applications”

Due to the cost effectiveness, eco-friendly nature and economic feasibilities, green synthesis

must be considered as the safer alternative to conventional chemical, physical and microbial

methods. In the present study, a green synthesis of magnetite nanoparticles (Fe3O4 NPs) and

silver nanoparticles (Ag NPs) has been carried out by co-precipitation method using the green

roots Calamus tenuis and Baccurea ramiflora as reducing and capping agent. The successful

synthesis of magnetite and silver nanoparticles was confirmed by UV-Visible spectroscopy and

characterized by Scanning electron microscopy, X-Ray diffraction, and Fourier transform

infra-red spectroscopy. The formation of magnetite nanoparticles was confirmed by color

change of the reaction mixture and continuous absorbance peak at 300-800 nm without any

strong absorption band in UV-Visible Spectrometer. The formation of silver nanoparticles was

confirmed by color change and strong absorption peak at 475 nm in UV-Visible

spectrophotometer. From XRD, the size of synthesized magnetite nanoparticles was 8 nm, 7.75

nm and 7.41 nm respectively. Stable magnetite nanoparticles of average 26 nm, 21 nm and 18

nm size with spherical like shape were obtained maintaining point of zero charge at pH 7.

Posteriorly, the synthesized Fe3O4 NPs and Ag NPs were evaluated on the methylene blue and

methyl red dye degradation process. These phytogenic nanoparticles possess characteristic

magnetic property and DPPH free radical scavenging activity. The synthesis process is

environmentally compatible and the synthesized Fe3O4 NPs could be a potential candidate for

many biomedical applications.

• Supervision