Study of α-Fe2O3@ ZnO nanoleaves: Morphological and optical study

Abstract

In this paper, α-Fe2O4@ZnO nanoparticles (NPs) were synthesized by coprecipitation method in the presence of PVP and EG surfactants. The samples were charactrized by x-ray fluorescence (XRF), x-ray diffraction (XRD), scanning electron microscopy (SEM), high resolution transmission electron microscopy (HRTEM), and fourier transform infrared spectroscopy (FTIR). The XRD results exhibited rhombohedral α-Fe2O3 and wurtzite structure of ZnO. The SEM images showed that the NPs changed from rod-shape to nanoleaves particles after heat treatment. The TEM studies displayed the formation of Fe2O3@ZnO core-shell of as-synthesized NPs. The stretching vibrations peaks in FTIR in the wavenumber of 532 cm-1 and 473 cm-1 ascribed to the Fe and Zn groups. The XRF data indicated decreasing of the Fe weight percent from 22 %Wt. to 25 %Wt., after heat treatment.

Effect of Zn–Fe2O3 nanomaterials on the phase separated morphologies of polyvinylidene fluoride piezoelectric nanogenerators

“…XRD spectra also contain characteristic peaks at 2 θ values 55.4°, 62.3° corresponding to the (003), (103) planes of composite. 23 A slight deviation of the peaks from the reported XRD pattern for Fe 2 O 3 indicates the successful incorporation of Zn in the Fe 2 O 3 structure. The sharp diffraction peak pattern further confirms the ultra-high crystallinity of the synthesized nanoparticles.…”