| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 50777 | Catalysis Communications | 2012 | 5 Pages |
Nanotubular titanic acid obtained by hydrothermal method was selected as a precursor to prepare platinum decorated TiO2 − xNxvia a facile one-pot route. Photocatalytic activity of Pt/TiO2 − xNx for visible-light induced degradation of propylene was evaluated in relation to the synergistic effect among single-electron-trapped oxygen vacancies and dopants N plus Pt. It is proposed that oxygen vacancies induce a new sub-band between the valence band and conduction band of TiO2 resulting in visible light response of Pt/TiO2 − xNx; the synergistic effect among oxygen vacancies and dopants leads to enhanced photocatalytic activity of as-synthesized Pt/TiO2 − xNx. Moreover, the effect of chemical state of dopants on visible light photoactivity is discussed in detail.
► Pt/TiO2 − xNx was prepared via a facile one-pot synthesis. ► Nanotubular titanic acids were specially selected as codoped precursors. ► Dopants Pt with superfine size were well dispersed on the surface of TiO2. ► Oxygen vacancies played an important role in visible light sensitization. ► Photocatalytic degradation mechanisms of C3H6 over Pt/TiO2 − xNx was proposed.
