Open Access

ARTICLE

Synthesis and Characterization of CMC-Wrapped ZnONPs at Different Calcination Temperatures for Photocatalytic Degradation of Methylene Blue Dye under Sunlight

by Abhishek Kumar Patel, Ashlesha P. Kawale, Neeru Sharma, Nishant Shekhar, Subhash Banerjee^*, Arti Srivastava^*

Department of Chemistry, Guru Ghasidas Vishwavidyalaya, Bilaspur, Chhattisgarh, 495009, India

* Corresponding Authors: Subhash Banerjee. Email: ; Arti Srivastava. Email:

Journal of Polymer Materials 2024, 41(2), 69-86. https://doi.org/10.32604/jpm.2024.052695

Received 11 April 2024; Accepted 10 July 2024; Issue published 09 August 2024

Abstract

This study aims to synthesize, characterize, and evaluate the photocatalytic efficiency of carboxymethyl cellulose (CMC) wrapped ZnONPs for the degradation of methylene blue (MB) dye under sunlight and also focuses on the effect of varying calcination temperatures on crystallite size of the synthesized ZnONPs@CMC. It focuses on developing biopolymer (CMC) wrapped ZnO nanoparticles (ZnONPs@CMC) at different calcination temperatures. ZnONPs@CMC are synthesized using zinc acetate dihydrate as a precursor under alkaline conditions, followed by adding capping agent CMC at various calcination temperatures ranging from 250°C to 650°C. The nanomaterials are characterized by UV-Vis, FTIR, and powder X-Ray Diffraction (XRD) studies. The presence of CMC as a capping agent facilitates the nucleation and growth of nanoparticles (NPs) and provides stability and functionalization to the NPs. The varying calcination temperature plays a significant role in influencing the size of NPs during the synthesis process. The crystallite size of ZnO-CMC NPs is 19.5959, 21.2518, 23.5000, 27.5930, and 34.9789 nm at 250°C, 350°C, 450°C, 550°C, and 650°C calcination temperature, respectively. With the increase in the calcination temperature from 250°C to 650°C, crystallite size increased significantly. The degradation of MB dye is studied using a UV-visible spectrophotometer, revealing that the synthesized ZnONPs@CMC are highly efficient in the photocatalytic degradation of MB under sunlight.

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