Antibacterial Test of the CaTiO<sub>3</sub> Compound Obtained through Molten Salt Method

Microbial resistance has become a threat that causes thousands of deaths yearly; therefore, efforts are required to address this problem. One of the promising methods used to inhibit bacterial growth is photocatalyst technology. In this research, CaTiO 3 compounds was synthesized using the molten salt method and tested for antibacterial activity in both UV-unexposed and UV-exposed conditions on Staphylococcus aureus bacteria. The diffractogram showed that the CaTiO 3 compound was successfully synthesized without impurities that indicated by the characteristic peaks at 2 θ ( o ) = 23.29; 33.18; 47.52; 59.33; 69.48; 79.17. The micrograph results showed that the CaTiO 3 compound had a regular polyhedral shape and was agglomerated with particle sizes in the 0.2941 ± 0.0144 µm range. The UV-Vis DRS spectra showed that the CaTiO 3 compound had a bandgap energy of 3.48 eV (315 nm). In the antibacterial activity test results under UV irradiation, the growth of Staphylococcus aureus decreased by 3.95, 0.91, and 1.45 CFU/mL.