Synthesis and characterization of spinel FeAl2O4 (Hercynite) magnetic nanoparticles and it’s applications in multi-component reactions

Recent years, the improvement in nanotechnology led to an increasing insist for multifunctional materials owing to simplicity in operation1–3, remarkable recyclability, high surface areaand ecofriendly nature. In this regard, solid catalysts and magnetic composite nanoparticles are interesting for industrial and biomedical applications and, especially, in catalysis studies as a magnetically separable catalyst 4,5. Among the various MNPs, Fe3O4 has been widely considered as a catalyst6. In general, the spinel ferrite catalysts (AB2O4, B = Co, Fe, Ni, Mn, Mg, Al, Zr, Zn...) alloy (Fe-Co, Fe-Pt, Fe-Ru...) nanoparticles, and multifunctional nanoparticles have higher performance than the monometallic catalysts1,7,8. One of the most promising MNPs supports for the development of high-performance catalyst supports is superparamagnetic iron oxide. The notable advantages of spinel ferrite MNPs are simple synthesis, readily available, low cost, high surface area, low toxicity and superparamagnetism properties. Owing to the inherent advantages of recovery, in the context of green chemistry and reuse of catalyst, herein hercynite MNPs heterogeneous catalyst has been reported for one-pot synthesis of benzo[a]pyrano[2,3-c]phenazine and polyhydroquinoline derivatives (Fig. 1).

کلیدواژه ها:

FeAl2O4 ، Hercynite ، Magnetic nanoparticles ، Benzo[a]pyrano[2 ، 3-C]phenazine ، Polyhydroquinoline..