Nano-Co synthesized by sol-gel progress with acrylamide and pea (pisum sativum) and lucerne (medicago sativa): magnetic and structural properties.

Cobalt nano-materials are widely used in the manufacture of biomedical, medical sensors, and contrasting agents in magnetic resonance imaging procedures. Also, its electromagnetic wave shielding properties makes the compound ideal for use in manufacture of cell phones. Co₃O₄ (STREM CHEMICALS) was used, X-ray powder diffraction, (PDF 43-1003) and 3% of several iron oxides impurities. Co₃O₄ was diluted with HCl and HNO₃ at 321 K, under constant magnetic stirring, gets CoCl₂ salt. With sol-gel (microwave-assisted) we added monomer acrylamide, crosslinker agent N, N'-methylenebisacrylamide and polymerization accelerator agent α, α'-azodiisobutyramidine dihydrochloride, 3 s to obtain the gel. We detect the oxidation changes of the Co in each synthesis stage process done. The pea (pisum sativum) and lucerne (medicago sativa) was grown-up in distilled water with Co₃O₄. Thermogravimetric analysis determines gel’s stages of degradation. In order to remove the organic compounds a thermal treatment at 873 K, was given to the gel. By Atomic Force Microscopy saw the topography of Co and crystals size (50- 120 nm). Measure of magnetic properties changes with the crystal sizes. HRTEM we visualised the Co in pea, lucerne and the shape of the nano-crystals.