Preparation of HS-CoFe2O4/Cu(ΙΙ) as a natural based magnetic catalyst.

In this research, HS-CoFe2O4/Cu(ΙΙ) has been synthesized as a novel, natural based and recoverable magnetic composite with high catalytic activity. The structure of this magnetic natural based catalyst was investigated and approved using various analytical tools such as FT-IR, EDX-map, X-ray diffraction (XRD), VSM and FE-SEM. Among the advantages of the developed catalyst, one can point to compatibility with the environment, easy preparation and separation, reusability and low production cost. According to the principles of green chemistry, this study seeks to highlight the possibility of applying renewable and cheap materials and preparing catalysts with waste materials. The synthesized HS-CoFe2O4/Cu(ΙΙ) has shown high catalytic activity for the preparation of bis(indolyl)methane and dihydropyrano[2,3-c]pyrazole derivatives.