Sol-gel iron-doped TiO2 nanopowders with photocatalytic activity

- Un-doped and Fe-doped sol-gel TiO2 nanopowders have been prepared.
- The correlation structural-magnetic properties explained the using properties.
- The powders were tested for the first in the degradation of nitrobenzene from water.
- The photocatalytic properties of TiO2 were significantly improved by iron doping.
- The sample with 0.5 wt% Fe, treated at 400 °C, had the best photocatalytic activity.