Synthesis of Co3O4 nanoparticles from amino acids mixed ligands and its adsorption properties

Abstract

The metal precursor derived from the reaction of Co(II) acetate with the mixed ligands of lysine(Lys) and glutamine(Glu) was used to synthesize Co 3 O 4 nanoparticles. The precursor was characterized by (C, H, N, M), IR, electronic spectra, TGA and effective magnetic moments. Co 3 O 4 nanoparticles were prepared from calcinations of the synthesized precursor at 800 o C. The obtained nanoparticles were characterized by X-ray powder diffraction and transmittance electron microscope. The average particle size is 50 nm. Co 3 O 4 nanoparticles. Adsorption of Methylene Blue on the surface of the Co 3 O 4 was studied. The synthesized metal oxide has 27.2 (mg/g) adsorption capacity of methylene blue (MB) from aqueous solution and removed 95 % of it. This method can be used to remove dyes from wastewater. Langmuir isotherm was the best model represents the adsorption of MB. Pseudo-second-order model with determination coefficient (R 2) close to the unity was the best model for adsorption kinetic of MB.

Sulfanilamide and 2‐hydroxy acetophenone driven Schiff base metal complex synthesizing, identification, and promising bioactivity

“…[18][19][20][21] These elements' compounds are helpful in other domains, especially nano fields. [22][23][24][25][26] In literature, the Schiff bases (ligands) produced from 2-hydroxy acetophenone and primary amine (-NH2) compounds are highly remarkable due to their non-toxic qualities, aqueous solubility, excellent coordinating ability, and metabolic activity. [27][28][29] It has been demonstrated that such similar ligands coordinate with a wide range of ionized bivalent metals, including Fe 2+ , Co 2+ , Cu 2+ , Ni 2+ , and Zn 2+ ; these complexes have been demonstrated to contribute to medication-proof against malignancy in vivo and in vitro cells.…”

“…These ions produce small molecular mass complexes more effective than various ailments 18–21 . These elements' compounds are helpful in other domains, especially nano fields 22–26 …”