Caracterização química do extrato da Imburana (Commiphora Leptophloeos) e seu emprego na síntese verde de partículas de CuFe2O4

Abstract

Copper Ferrite Nanoparticles (CuFe2O4) were synthesized by a green route using the aqueous and hydroethanolic extract of the bark of Commiphora Leptophloeos, popularly known as “Imburana”, a plant native to the Caatinga region in Brazil. The phytoconstituents present in the extract were used as complexing and chelating agents for the synthesis of CuFe2O4 particles. All characterizations of the bark and plant extract were performed by FTIR, TG, UV/Vis and HPLC-MS/MS analyses. The particle size, morphologies and properties of the materials obtained were analyzed by DRX, SEM, UV/Vis and FTIR. The present study intends to demonstrate the effectiveness of the use of natural extracts as providers of secondary metabolics for the reduction and stabilization of nanomaterial structures of metallic oxides, in this case, Ferrites using an ecologically correct and economically viable green synthesis route. They were identified as secondary metabolites in acid and flavonoid extracts. The presence of quinic acid, eriodictiol, catechins, quercetins and luteolins showed good efficiency and action as complexing, chelating and reducing agents, as well as stabilizersfor the synthesis of CuFe2O4 particles. The obtained particles showed crystallite sizes between 25,6 and 42,4nm at the extract. The UV-Vis and FTIR analysis showed the characteristic bands for Copper Ferrite, confirming its presence on the formation of an inverted spinel with tetrahedral and octahedral sites. The morphology of the samples in the presence of the extract became uniform, flocculated and agglomerated. The presence of the phytoconstituents showed good effectiveness to the formation of the CuFe2O4, assisting on the reduction and stabilization of particles.