ANTI-BACTERIAL EFFECT OF MN:TIO2 THIN FILMS SYNTHESIS BY DIP-COATING SOL-GEL METHOD

Abstract

Manganese-doped titanium dioxide (Mn-TiO2) has emerged as a promising material with enhanced antibacterial properties compared to pure titanium dioxide. This summary explores the key aspects of the antibacterial activity of Mn-doped titanium dioxide, counting the dip-coating sol-gel synthesis method, mechanisms of action, and factors affecting its efficacy. The structural tests (SIM and EFM) showed that there is a reduction in the particle size and an increase in the surface area with high homogeneity when the manganese concentration increases, as the particle size reaches 9 nanometres in the sample TM4. Visual examinations showed that there was a creep towards the visible region when the concentration of manganese increased, as the energy gap value reached 2.51 for the sample TM4. Bacterial inhibition tests showed that there is a significant inhibition upon irradiation with visible light. This is expected due to the increased surface area to volume for most samples. The best of them were selected for this application and tested for three time periods: 15, 30 and 60 minutes. This result is very important and unique, especially for medical applications.