Abstract
Environmental nanotechnology has received much attention owing to its implications on environmental ecosystem, and thus is promising for the elimination of toxic elements from the aquatic surface. This work focuses on Cu-doped ZnSe nanoparticles using the co-precipitation method. The synthesized Cu-doped ZnSe nanoparticles were examined for structural, optical, and morphological properties with the help of XRD, FTIR, UV/vis diffuse reflection spectroscopy (DRS), FESEM, TEM, and XPS. The synthesized Cu-doped ZnSe nanoparticles revealed the presence of Cu2+ in the ZnSe lattice, which has been shown to take a predominant role for enhanced catalysis in the Cu-doped ZnSe nanoparticles. The synthesized Cu-doped ZnSe nanoparticles were investigated for their catalytic and antibacterial activities. The 0.1 M copper-doped ZnSe nanoparticles exhibited the highest rate of degradation against the methyl orange dye, which was found to be 87%. A pseudo-first-order kinetics was followed by Cu-doped ZnSe nanoparticles with a rate constant of 0.1334 min−1. The gram-positive and gram-negative bacteria were used for investigating the anti-bacterial activity of the Cu-doped ZnSe nanoparticles. The Cu-doped ZnSe nanoparticles exhibited enhanced photocatalytic and antibacterial activity.
Highlights
For the removal of dyes as organic contaminants in an aqueous system, conventional methods have been in vogue, which include ultrafiltration, reverse osmosis, ion exchange, adsorption, photocatalytic degradation, and so on; these methods cannot completely degrade the organic pollutants [1,2,3,4,5,6,7]
Cu-doped ZnSe nanoparticles were synthesized from a simple co-precipitation method and their catalytic activity was examined by employing methyl orange (MO) dye in aqueous solution as a model dye and its rate of kinetics was investigated
The photocatalytic and bacterial efficiency of the Cu-doped ZnSe nanoparticles prove it as a promising material for the removal of pollutants in water
Summary
The electrons are excited and steered from the valence band to the conduction band of the photocatalyst using energy from an optical source, and highly reactive hydroxyl radicals are generated for oxidation and degradation of contaminants [10] Thanks to their superior thermal stability, corrosion resistance, and high surface area to volume ratio, metal oxides like titanium oxide, zinc oxide, manganese oxide, and manganese dioxide have gained significant attention for photocatalysis [11]. These copper-doped zinc-related materials have been shown to demonstrate the highest catalytic activity and morphological enhancement as compared with the pristine materials by enhancing the production of free radicals In this present work, Cu-doped ZnSe nanoparticles were synthesized from a simple co-precipitation method and their catalytic activity was examined by employing methyl orange (MO) dye in aqueous solution as a model dye and its rate of kinetics was investigated. The photocatalytic and bacterial efficiency of the Cu-doped ZnSe nanoparticles prove it as a promising material for the removal of pollutants in water
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