Abstract
This work reports a simple, novel, and cost effective synthesis of nanobimetal oxide catalyst using cerium and cadmium nitrates as metal precursors. The cerium-cadmium oxide nanophotocatalyst was synthesized by coprecipitation method and characterized by X-ray powder diffraction method to analyze the particle size. XRD study reveals a high degree of crystallinity and 28.43 nm particle size. The photocatalytic efficiency of the synthesized nanobimetal catalyst was examined by using it for the photocatalytic degradation of malachite green dye. Experiments were conducted to study the effect of various parameters, such as the pH of the dye solution, concentration of dye, amount of catalyst, and light intensity on the rate of dye degradation. The progress of the dye degradation was monitored spectrophotometrically by taking the optical density of the dye solution at regular intervals. Experimental results indicate that the dye degrades best at pH 8.0 with light intensity 600 Wm−2 and catalyst loading 0.03 g/50 mL of dye solution. The rate constant for the reaction was 7.67 × 10−4 s−1.
Highlights
Clean water is a vital commodity, as it is a prerequisite for life
An increase in the rate of photocatalytic degradation of malachite green with increase in pH may be due to the generation of more ∙OH radicals, which are produced from the reaction between −OH ions and hole (h+) of the semiconductor
Simple, fast, and low cost synthesis of novel nanosized cerium-cadmium oxide and its characterization by XRD were studied in this research paper
Summary
Clean water is a vital commodity, as it is a prerequisite for life. An adequate water supply in both quantity and quality is essential to human existence [1]. Studies have demonstrated that photocatalysis can be used to destroy dye compounds using semiconductor photocatalysts under light irradiation. There have been extensive studies done by researchers around the globe on many photocatalytic systems (UV/semiconductors) since they have been found to be very effective in degrading various organic dyes. Studies have demonstrated that bimetal catalyst has advantage of low metal leaching during the catalytic reaction, avoiding secondary metal contamination to the treated wastewater [22]. With this view, the present study was planned to investigate the degradation of malachite green dye with photocatalytic system using bimetal oxide.
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