Abstract
Zn1-xMnxSe (x=5,10, and 15 wt.%) nanoparticles (NPs) were synthesized by a conventional hydrothermal method using hydrazine hydrate as a reducing agent. Structural, microstructural, surface morphological, vibrational, and optical features of as-synthesized nanoparticles were studied with the help of powder X-ray diffraction (PXRD), and high-resolution transmission electron microscopy (HRTEM), ultraviolet–visible spectroscopy (UV–vis), Fourier transform infrared spectroscopy (FT-IR), and micro-Raman spectroscopy. Powder X-ray diffraction patterns revealed that all the synthesized NPs exhibit wurtzite-like hexagonal crystal structure. HR-TEM micrographs illustrate that the synthesized particles have agglomerated with non-identical sizes. From UV–vis spectra, the calculated bandgap values have been found to be in the range of 2.59 – 2.67 eV because of the incorporation of Mn2+ into Zn2+ site in ZnSe, seen redshift phenomenon. Pure and Mn-doped ZnSe NPs are ferromagnetic in nature and as Mn concentration increases to 5, 10, and 15 wt% in ZnSe, the saturated magnetization increases to 0.000352 emu/g, 0.000565 emu/g, and 0.000842 emu/g, respectively. Additionally, the photocatalytic efficiency of all the synthesized compounds towards reactive black 5 dye (RB5) degradation has manifested under UV irradiation and it has been found to be the maximum photocatalytic activity of 83%. In vitro MTT assay was performed using the lung adenocarcinoma basal alveoli epithelial cells (A549) cell for all the samples, which reveals that Mn-doped ZnSe NPs established strong anti-proliferative activities when compared to untreated ZnSe against the A549 cell line (lung adenocarcinoma basal alveoli epithelial cells).
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