Abstract
The development of cost-effective and ecofriendly approaches toward water purification and antibacterial activity is a hot research topic in this era. Purposely, strontium-doped zinc selenide (Sr-doped ZnSe) nanoparticles, with different molar ratios of Sr2+ cations (0.01, 0.05, and 0.1), were prepared via the co-precipitation method, in which sodium borohydride (NaBH4) and 2-mercaptoethanol were employed as reducing and stabilizing agents, respectively. The ZnSe cubic structure expanded by Sr2+ cations was indicated by X-ray diffraction (XRD) analysis. The absorption of the chemical compounds on the surface was observed via Fourier transform infrared (FT-IR) spectroscopy. The optical orientation was measured by ultraviolet–visible diffused reflectance spectroscopy (UV-DRS) analysis. The surface area, morphology, and elemental purity were analyzed using field emission scanning electron microscopy (FE-SEM), high-resolution transmission electron microscopy (HR-TEM), and energy-dispersive spectroscopy (EDS) analyses. The oxidation state and valency of the synthesized nanoparticles were analyzed using X-ray photoelectron spectroscopy (XPS). Sr-doped ZnSe nanoparticles were investigated for photocatalytic degradation of methyl orange (MO), and their antibacterial potential was investigated against different bacterial strains. The antibacterial activity examined against Staphylococcus aureus and Escherichia coli implied the excellent biological activity of the nanoparticles. Moreover, the Sr-doped ZnSe nanoparticles were evaluated by the successful degradation of methyl orange under visible light irradiation. Therefore, Sr-doped ZnSe nanoparticles have tremendous potential in biological and water remediation fields.
Highlights
Introduction conditions of the Creative CommonsWater contamination is a vital environmental issue that exhibits catastrophic consequences for the world [1]
All the chemicals were bought from HiMedia, India (99% purity)
ZnSe nanoparticle X-ray diffraction (XRD) pattern displayed in Figure 2 shows the crystallographic structure and phase nature of the samples
Summary
Introduction conditions of the Creative CommonsWater contamination is a vital environmental issue that exhibits catastrophic consequences for the world [1]. Various chemical, physical, and biological methods have been used for wastewater treatment, which includes filtration, advanced oxidation, flocculation and coagulation, catalysis, photo and chemical degradation, and adsorption [8,9] In this way, photocatalysis provides a low-cost and reliable treatment for water purification [10,11,12]. Scientific research is focused on the development of new eco-friendly and cost-effective materials for the elimination of harmful contaminants from wastewater streams. Because of their intriguing chemical and physical characteristics, semiconductor nanostructures have shown some efficiency regarding the photocatalytic removal of industrial effluents [13,14]
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