Study of doping effect of manganese on the morphological, optical, and thermal properties of zinc oxide nanoparticles embedded on poly-(p-anisidine)
J. Environ. Nanotechnol., Volume 13, No 4 (2024) pp. 462-477
Abstract
Metal-doped nanoparticles are of great interest for their multifunctionality and versatile applications. Recent research has focused on analyzing the morphological and optical properties of zinc oxide nanoparticles. Nanostructured materials find diverse uses, including corrosion protection, sunscreen, anti-scratch coatings, and stain removal, driving the need for novel materials with specific properties. This present work analyzed the structural, optical, and thermal properties of ZnO and Mn/ZnO synthesized nanoparticles, poly-(p-anisidine) (PPA), ZnO-PPA, Mn/ZnO-PPA by various techniques including X-Ray diffraction, Fourier transform infra-red, Scanning electron microscope, Energy dispersive studies, Ultra-violet-visible spectra, and Photo luminescence studies. XRD results confirmed the wurtzite type structure for all the synthesized nanoparticles, and no phase of impurity was noted. SEM analysis confirmed the rod like structure with crystallites shape of hexagonal, spherical morphology for pure zinc oxide and nanoflower like shape for all the manganese doped nanoparticle and polymer nanocomposites. A very clear polymer cross-linkage chain formation for polymer nanocomposites was also observed. The ultraviolet-visible spectra results showed a red shift in absorption with doping of manganese doped and zinc oxide embedded on PPA while comparing with the pure zinc oxide. The bandgap values are noted to be 3.20, 2.29, 2.89, 2.00 and 2.98eV for pure ZnO, Mn/ZnO, poly-(p-anisidine) (PPA), ZnO-PPA and Mn/ZnO-PPA polymer nanocomposites respectively. The existence of elements such as Zn, O, Mn, C and N were evidenced by EDAX analysis. It also confirms the absence of impurities in the synthesized nanoparticles and poly-(p-anisidine) (PPA) polymer. A finite difference in the weight loss was noted in the temperature range from 25 oC to 900oC in the respective pattern. Three-different stages of thermal decomposition were observed in all the above synthesized nanomaterials.
Keywords: Zinc oxide, Nanoparticles, Dopant, Poly-(p-anisidine), Manganese
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Reference
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