Synthesis, structural, spectroscopic, biological and catalytic activity of Co(II), Ni(II) and Cu(II) complexes of benzilic hydrazide (BH)

Immobilization of novel inorganic nano-complexes onto MWCNT nanomaterials as a novel adsorbent and anti-inflammatory therapy in an induced model of rheumatoid arthritis

Novel supported inorganic metal nano-complexes of Ag(I) and Co(II) derived from 4-amino-N-(4-methylpyrimidin-2-yl) benzene sulfonamide (SulMer) were synthesized using olive leaf extract as a reducing agent with grinding and microwave methods. The prepared samples were denoted as Comp1-6. The surface morphologies of the synthesized nanomaterials were analyzed using C, H, N, S analysis, Fourier-transform infrared spectroscopy, UV- visible spectroscopy, proton and carbon nuclear magnetic resonance, scanning electron microscopy, transmission electron microscopy, thermogravimetric analysis, and x-ray powder diffraction (XRD) analysis. The data revealed that all the synthesized complexes exhibited a 1:1 metal-to-ligand ratio with a coordination number of 4 or 6. The mean particle size of the nanomaterial samples was 25-35 nm. The XRD patterns indicated a crystalline nature for the complexes. The supported inorganic metal nano-complexes displayed good activity in the adsorptive removal of Direct Red 81 (DR-81) from aqueous solutions. In addition, the effect of the supported metal nano-complexes on the immune system was studied as well as how these anti-inflammatory compounds could be used to treat many autoimmune diseases, most notably rheumatoid arthritis. An experimental model for arthritis can be induced using complete Freund's adjuvant. It was shown that the supported complex offers several advantages such stability, eco-friendliness, simple experimental conditions, short reaction times, and easy work- up.