Photocatalytic and antibacterial properties of TiO2 powder doped with Fe

Abstract

The Fe doped TiO₂ powders was synthesized by titanium (IV) isopropoxide, iron (III) nitrate nonahydrate, nitric acid and ethanol using sol-gel method. Follow by annealing at 500°C for 2 h in ambient with a heating rate of 10°C/min. The physical and chemical properties of synthesized powders were examined using XRD, SEM and BET. The photocatalytic performance was evaluated using means of degradation of methylene blue (MB) solution and antibacterial activity was investigated by the inactivation of Escherichia coli (E. coli) bacteria. The synthesized powders were anatase in phase with 10 to 100 µm of grain size according to the SEM images. The results from photocatalytic and antibacterial tests suggested that the performance TiO2 powder doped Fe was greater than pure TiO₂. Furthemore, the 5 mol% Fe doping exhibited the highest photocatalytic on MB (59.3%) and antibacterial activity (94.2%) under UV irradiation.