SYSTEMATIC OPTIMIZATION OF SOL-GEL SYNTHESIS PARAMETERS FOR SIO₂ NANOPARTICLES DERIVED FROM IMMATURE RICE ASH AND SUGARCANE BAGASSE ASH
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In this study, SiO2 was extracted from immature rice ash (IRA) and Sugarcane bagasse ash (SBA) under various experimentalcircumstances, varying temperatures, amounts of NaOH, and dissolved time. Then, SiO2 nanoparticles were created usingthe sol-gel method. By increasing the amount of time, the effects of the experimental circumstances are investigated. IRA andSBA were subjected to NaOH dissolution for 60, 90, 120, 150, and 180 minutes. A range of NaOH volumes 100 to 400 mland temperatures (50 °C to 100 °C in 10 °C increments) were tested, keeping the biomass quantity constant at 10 g. Differentexperimental settings were used to calculate the amount of SiO2 extracted, and optimum experimental conditions were usedto perform the extraction process. The FTIR, SEM, and XRD are used to characterize the extracted SiO2 nanoparticles. Results confirm the successful formation of high-purity SiO₂ nanoparticles, with IRA demonstrating a novel precursor sourceand process conditions tailored for both IRA and SBA. This work contributes to sustainable nanomaterial production byvalorising underutilized agricultural waste.
Abstract
In this study, SiO2 was extracted from immature rice ash (IRA) and Sugarcane bagasse ash (SBA) under various experimentalcircumstances, varying temperatures, amounts of NaOH, and dissolved time. Then, SiO2 nanoparticles were created usingthe sol-gel method. By increasing the amount of time, the effects of the experimental circumstances are investigated. IRA andSBA were subjected to NaOH dissolution for 60, 90, 120, 150, and 180 minutes. A range of NaOH volumes 100 to 400 mland temperatures (50 °C to 100 °C in 10 °C increments) were tested, keeping the biomass quantity constant at 10 g. Differentexperimental settings were used to calculate the amount of SiO2 extracted, and optimum experimental conditions were usedto perform the extraction process. The FTIR, SEM, and XRD are used to characterize the extracted SiO2 nanoparticles. Results confirm the successful formation of high-purity SiO₂ nanoparticles, with IRA demonstrating a novel precursor sourceand process conditions tailored for both IRA and SBA. This work contributes to sustainable nanomaterial production byvalorising underutilized agricultural waste.