Synthesis of γFe2O3 Nanoparticles and Catalytic activity of AzideAlkyne Cycloaddition Reactions

Iron nanoparticles (NPs), due to their interesting properties, low cost preparation and many potential applications in ferrofluids, magnetooptical, catalysis, drug delivery systems, magnetic resonance imaging, and biology, have attracted a lot of interest during recent years. In this research, γFe2O3NPs were synthesized through simple coprecipitation method followed by thermal treatment at 300 °C for 2 hours. In our synthesis route, FeCl3 and FeCl2 were employed as precursors to synthesize γFe2O3NPs. This approach is very effective and economical. The γFe2O3NPs were characterized by Xray diffraction (XRD), Fourier transform infrared (FTIR) spectroscopy, scanning electron microscopy (SEM), transmission electron microscopy (TEM),and vibrating sample magnetometer (VSM). The XRD and FTIR results indicated the formation of γFe2O3NPs. The SEM and TEM images contributed to the analysis of particle size and revealed that the γFe2O3 particle size of the nanopowders ranged from 11 and 13 nm. Magnetic property was measured by VSM at room temperature and hysteresis loops exhibited that the γFe2O3 NPs were superparamagnetic. The synthesized γFe2O3NPs were applied in order to synthesize monotriazoles within one molecule using azidealkyne cycloaddition reactions. KEYWORDS: γFe2O3 Nanoparticles,