Chemical co-precipitation produces ZnxNi1–xO composites with varying structures and energy gaps, suggesting diverse optical properties.
Chemical co-precipitation was applied to create ZnxNi1–xO nano-powder material composites. This was achieved by mixing varied ratios (X = 0.0, 0.25, 0.50, 0.75, and 1.0) of zinc oxide (ZnO) and nickel oxide (NiO). The fabricated samples were then annealed at 400°C for 2 h. The outcomes of the X-ray diff raction (XRD) analysis revealed hexagonal or cubic lattices. Th e crystallite sizes were evaluated using Debye-Scherrer and Williamson-Hall equations. Th e outcomes of the Fourier transform infrared (FTIR) spectroscopy verified the existence of ZnO and NiO in all samples. The results of the field emission scanning electron microscopy (FESEM) revealed different nano-structures, and the morphology relied on the X. The outcomes of the energy-dispersive X-ray (EDX) confirmed the purity of the samples. Moreover, zinc (Zn), nickel (Ni) and oxygen (O) were discovered, which are compatible with the XRD and FTIR outcomes. Finally, the Kubelka-Munk function (F[R∞]) was applied to evaluate the samples’ optical characteristics in the ultraviolet-visible (UV-Vis) range. The energy gap (Eg) of the samples varied according to the X. Numerous samples had two Eg.
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Abed et al. (2025) studied this question.
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