N, S co-doped-TiO2/fly ash beads composite material and visible light photocatalytic activity

- TiO2/fly ash beads photocatalyst was prepared by hydrolysis-precipitation method.
- For N-S-TiO2/FMS, (NH2)2CO and (NH2)2SC were used as N, S source respectively.
- Visible absorption edge was expanded from 390-500 nm after N, S co-doping.
- N-S-TiO2/FMS samples present obvious visible light photocatalytic activity.
- Fly ash beads reduced the reunion effect and improved operation recycle ability.