Estudo da suspensão do óleo de copaíba Multijulga com Nanopartículas de magnetitas substituídas

Abstract

Nanotechnology excels in many areas of expertise, for example, magnetic nanoparticles of iron oxides contribute to the therapy and diagnosis of cancer. Nanoparticles from iron oxides (NM) and magnetite (Fe3O4) and maghemite (γ-Fe2O3) assist in early detection of tumors by nuclear magnetic resonance and permeate into cancer cells for the eradication of tumors by hyperthermia. However, the application of magnetic iron oxides depends on the synthetic route of the magnetic namomaterial and their incorporation in cancer cells. Thus, a series of NM, replaced by Ni and Co, was synthesized by co-precipitation in this work to incorporate them into Copaiba oil Copaifera multijuga as a way to produce nanomaterials able to interact with cancer cells. Six NM replaced by Ni (Ni 1 Ni 2, Ni 3) and Co (Co1, Co 2, Co 3) were chosen using the exploratory techniques HCA and PCA with the R software (ChemoSpec packet) applied to spectra ray diffraction X. Selected NM were studied by XRD, FT-NIR, SEM-EDS and Mössbauer spectroscopy on samples embedded in C. oil multijuga and not incorporated. The results of XRD, SEM and FT-NIR showed a mixture of magnetite / maghemite particles distributed in small average particle size, or even amorphous. This suggests that the synthesis process generated the formation of NM with different morphologies. The Mössbauer spectra suggest different behavior as it increases the isomorphic substitution, so the higher is the substitution is superparamagnetic NM synthesized.