Preliminary Study on Different Calcination Temperature of TiO2/Eggshell Composite Using Sol-Gel Method

Abstract

The study investigated the impact of varying calcination temperatures on the band gap of a TiO₂/eggshell (TE) composite. The composites were synthesized via the sol-gel method and subjected to different calcination temperatures (400°C, 450°C, and 500°C). Characterization techniques including Thermogravimetric Analysis (TGA), UV-Visible Spectroscopy (UV-Vis), and X-Ray Diffraction (XRD) were employed. Among the different calcination temperatures, the TE 450°C composite exhibited optimal absorbance, indicating a potential enhancement in photocatalytic performance. This suggests that the calcination at 450°C provided favourable conditions for the composite properties. Furthermore, the band gap measurements of the composites ranged from 3.25 eV to 3.48 eV. This range indicates the ability to maintain the inherent stability of TiO2 while ensuring sufficient light absorption, crucial for effective photocatalysis. Overall, the study highlights the significance of calcination temperature in tailoring the properties of TiO₂-Eggshell composites, with the calcination temperature at 450°C composite demonstrating promising characteristics for photovoltaic applications and require more exploration.