Abstract
In this work, copper pyrovanadate (Cu3V2O7(OH)2(H2O)2) nanoparticles have been synthesized by a simple and rapid chemical precipitation method. Different copper-organic complexes were used to control the size and morphology of products. The morphology and structure of the as-synthesized products were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), Fourier transform infrared (FT-IR) spectrum, electron dispersive X-ray spectroscopy (EDX), thermal gravimetric analysis (TGA), differential thermal analysis (DTA) and photoluminescence (PL) spectroscopy. The influence of copper pyrovanadate nanostructures on the flame retardancy of the polystyrene, poly vinyl alcohol and cellulose acetate was studied. Dispersed nanoparticles play the role of a magnetic barrier layer, which slows down product volatilization and prevents the flame and oxygen from the sample during decomposition of the polymer. Cu3V2O7(OH)2(H2O)2 is converted to Cu3V2O8 with an endothermic reaction which simultaneously releases water and decrease the temperature of the flame region.
Highlights
Agglomerated particles Agglomerated particles resistance, low density and thermal insulation
All diffraction peaks were indexed to pure Monoclinic phase of Cu3(OH)2V2O7.nH2O with space group of C2/m and cell constants a = 10.6060 Å, b = 5.8740 Å, and c = 7.2130 Å (JCPDS Card No.80–1169)
Band gap of as-synthesized sample was obtained to 2.91 eV, which shows blue shift compared with Cu3V2O7(OH)2(H2O)[2] nanowires (1.94–2.22 eV)[30]
Summary
Agglomerated particles Agglomerated particles resistance, low density and thermal insulation. The influence of copper pyrovanadate nanostructures on the flame retardancy of the polymeric matrix nanocomposites was studied. The influence of different copper-organic complexes on the morphology and particle size of copper pyrovanadate samples were investigated by FESEM.
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