synthesis of γ-fe2o3 nanoparticles and catalytic activity of azide-alkyne cycloaddition reactions

Iron nanoparticles (nps), due to their interesting properties, low cost preparation and many potential applications in ferrofluids, magneto-optical, catalysis, drug delivery systems, magnetic resonance imaging, and biology, have attracted a lot of interest during recent years. in this research, γ- fe2o3nps were synthesized through simple co-precipitation method followed by thermal treatment at 300 °c for 2 hours. in our synthesis route, fecl3 and fecl2 were employed as precursors to synthesize γ-fe2o3nps. this approach is very effective and economical. the γ-fe2o3nps were characterized by x-ray diffraction (xrd), fourier transform infrared (ft-ir) spectroscopy, scanning electron microscopy (sem), transmission electron microscopy (tem),and vibrating sample magnetometer (vsm). the xrd and ft-ir results indicated the formation of γ-fe2o3nps. the sem and tem images contributed to the analysis of particle size and revealed that the γ-fe2o3 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 γ-fe2o3 nps were super-paramagnetic. the synthesized γ-fe2o3nps were applied in order to synthesize mono-triazoles within one molecule using azide-alkyne cycloaddition reactions.