Preliminary study on different calcination temperature of TiO2-eggshell composite using sol-gel method

The incorporation of titanium dioxide and eggshell composite at different calcination temperatures was studied. This study is focusing the effect of different calcination temperature on band gap of TiO2-Eggshell composite. In this research, TiO2-Eggshell composites were synthesized using sol-gel method and being calcined at different temperature (400 °C, 450°C and 500 °C). Thermogravimetric analysis (TGA) , UV Visible spectroscopy (UV- Vis) and X-Ray Diffraction (XRD) analysis were used to characterize the samples. the crystallize size of the TiO2, Eggshell, TE 400 °C, TE 450 °C, and TE 500 °C was estimated using Scherer’s method and found to be 16.86nm, 18.29nm, 27.80nm, 23.10nm, and 27.10nm respectively. Among three different calcination temperatures, TE 450°C composite demonstrated optimal absorbance at 3.14 a.u, suggesting a potential enhancement in photocatalytic performance. The band gap measurement of TE with different calcination temperatures range from 3.25 eV to 3.48 eV, it is can help retain the inherent stability of TiO2 while achieving sufficient light absorption.