Solid state thermal decomposition synthesis of CuO nanoparticles from coordinated pyrazolopyridine as novel precursors

Abstract

The complexes derived from reaction of copper(II) salts (Cl−, Br−, CH3COO− and SO 4 −2 ) 2-(3-Amino-4,6-dimethyl-1H-pyrazolo[3,4-b]pyridin-1-yl)acetohydrazide were prepared and characterized. Different standardized instruments were used for obtaining the required data (spectral method UV–Vis., IR, 1H-NMR, mass spectra) magnetic susceptibility and thermogravimetric analysis TGA were performed. The electronic spectral data and magnetic moment values proved that all the copper complexes have octahedral geometry. CuO nanoparticles with 15.5 nm of particle size have been synthesized via solid state thermal decomposition using these copper (II) complexes as new precursors. Surface morphology of the synthesized CuO nanoaprticles were investigated by Ultraviolet visible light spectroscopy (UV–Vis), X-ray diffraction, X-ray photoelectron spectroscopy, and scanning electron microscopy. The photocatalytic activity of CuO nanoparticles was assessed toward photocatalytic degradation of MB dye and the results exhibited 97 % efficiency with degradation rate of 0.018 min−1.