Facile Synthesis Optimization and Structure Characterization of Zinc Tungstate Nanoparticles

Abstract

The study involves a direct precipitation method developed for the facile and efficient synthesis of ZnWO₄ nanoparticles. Effects of various parameters such as zinc and tungstate ion solution concentrations, flow rate of reagent addition, and reactor temperature on diameter of synthesized zinc tungstate nanoparticles were investigated experimentally by the aid of orthogonal array design. The findings of the study revealed that the diameter of the produced ZnWO₄ nanoparticles can be fine-tuned through the adjustment of the reaction parameters, including zinc and tungstate ion solution concentrations and the reaction temperature, and at optimum conditions of synthesis procedure, the size of the produced zinc tungstate particles was about 33 nm. Finally, scanning electron microscopy, X-ray diffraction, FTIR, and photoluminescence techniques were used for structural and morphological characterization of the product, so as to monitor the role of the mentioned parameters on the targeted properties in the product.

Keywords:

• Nanoparticles
• Optimization
• Precipitation
• Tungstate
• Zinc

Notes

^a The critical value was at 90% confidence level; pooled error results from pooling insignificant effect.

^b Size of synthesized ZnWO₄ particles (nm) were used as response.

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