TY  - EJOU
AU  - Patel, Abhishek Kumar 
AU  - Kawale, Ashlesha P. 
AU  - Sharma, Neeru 
AU  - Shekhar, Nishant 
AU  - Banerjee, Subhash 
AU  - Srivastava, Arti 

TI  - Synthesis and Characterization of CMC-Wrapped ZnONPs at Different Calcination Temperatures for Photocatalytic Degradation of Methylene Blue Dye under Sunlight
T2  - Journal of Polymer Materials

PY  - 2024
VL  - 41
IS  - 2
SN  - 0976-3449

AB  - 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.
KW  - ZnONPs@CMC; FTIR; XRD analysis; calcination temperature; photocatalyst; methylene blue dye

DO  - 10.32604/jpm.2024.052695