The effect of ultrasonic irradiation power and initial concentration on the particle size of nano copper(II) coordination polymer: Precursors for preparation of CuO nanostructures

The general objective of this research was to study the effect of initial concentration of reactants and ultrasonic irradiation power impacts on the nanostructure of copper (II) coordination polymer of {[Cu-3(L)(NO3)(2)(DMF)(H2O)].(3)(DMF)}(n)(1) [H4L = N2,N6-bis[(E)-(2-hydroxyphenyl)imino)methyl)pyridine-2,6-dicarboxamide]. Different characterization methods utilized to determine the nanoparticles of compound 1 and thermal gravimetric (TGA) and differential thermal analyses (DTA) give us thermal stability of the nanoparticles. Reducing the concentration of initial reactants together with the increasing power of ultrasound irradiation can lead to obtaining nanoparticles of compound 1 with uniformed morphology and small particle size. Bandgap energy calculation revealed that as particles size decreases, nanoparticles of compound 1 shift to the blue light wavelengths. Thermal decomposition of the nanoparticles of compound 1 at 400 oC under an air atmosphere led to the synthesis of phase-pure CuO nanoparticles that are characterized by scanning electron microscope (SEM) and X-ray powder diffraction (XRD) analyses. The CuO nanoparticles obtained in this research appear to be highly dispersed with a particle size of around 23 nm.

Automated summary

The general objective of this research was to investigate the impact of initial concentration of reactants and ultrasonic irradiation power on the nanostructure of copper (II) coordination polymer. The study found that reducing the concentration of reactants and increasing the power of ultrasound irradiation can result in the formation of nanoparticles with uniform morphology and reduced particle size. Thermogravimetric and differential thermal analyses were used to determine the thermal stability of the nanoparticles. Additionally, the research successfully synthesized CuO nanoparticles through thermal decomposition.