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Ultrasound assisted facile synthesis of Mn(II) and Cu(II) coordination
polymers and their use as precursors for α-Mn3O4 and CuO nanoparticles:
Synthesis, characterization and catalytic properties

Research Authors
Mohamed I. Said, Asma I. El-Said, Aref A.M. Aly, Asia Abou-Taleb
Research Abstract

A self-assembly of pyridine-2,6-dicarboxylate with Cu(II) and Mn(II) under ultrasonic and microwave irradiation gave the two coordination polymers [Cu(PDA)(H2O)1.5]n (1) and [Mn(PDA)(H2O)1.5]n (2). Their structures were characterized using IR, elemental analysis, X-ray diffraction (XRD) and spectroscopic methods. The corresponding α-Mn3O4 and CuO nanoparticles were synthesized by calcination of 1 and 2 in air at 600 °C.Transmission electron microscopy (TEM) reveals a sphere-like morphology for the Mn3O4 nanoparticles. Shrinkage of the particle size from 90 nm (by conventional synthesis of the precursor) to 19 nm (ultrasonicassisted)
takes place, indicating the great effect of ultrasonication. CuO nanoparticles were of semispherical (conventional and ultrasonic-assisted methods) and hexagonal shapes (microwave irradiation) with an average diameter of 7, 15 and 25 nm, respectively. The catalytic performance of the coordination polymers towards
degradation of methylene blue and methyl orange in the presence of hydrogen peroxide was studied. Using the same dose, catalyst 1 proved to be more efficient in color removal of both MB and MO than catalyst 2 did. Recycling test for 2 showed that it is a recyclable catalyst with no structural changes over three recycling
experiments.

Research Department
Research Journal
Ultrasonics - Sonochemistry
Research Publisher
ElSEVIER
Research Rank
1
Research Vol
Vol. 46
Research Website
https://www.sciencedirect.com/science/article/abs/pii/S1350417718305443
Research Year
2018
Research Pages
pp. 68–78