Evaluation of synthesis of Tio2 nanoparticles via solgel method using acetone

Abstract

This study focuses on improving the control of hydrolysis rates in the synthesis of titanium dioxide (TiO2) by introducing acetone as a co-solvent. The main goal is to achieve better control over precursor hydrolysis, leading to enhanced morphological control of the synthesized TiO2. The introduction of acetone, with its lower surface tension and dielectric constant compared to water, is expected to reduce the solvation power of water, thereby improving control over the hydrolysis process. The synthesized TiO2 photocatalyst is evaluated for its photocatalytic activity through the degradation of Ponceau 4R dye. The main results include a crystallite size of approximately 59.30 nm and a band gap energy (Eg) of 3.2 eV for the synthesized TiO2. Photocatalytic tests demonstrate a significant improvement in the discoloration and mineralization of Ponceau 4R dye compared to a standard oxide, with a 15 % increase in mineralization. Overall, the study highlights the effectiveness of acetone as a co-solvent in controlling the hydrolysis process and enhancing the photocatalytic activity of TiO2. Future perspectives include further refinement of the synthesis process and optimization of the photocatalyst for broader applications.