Long-lived photogenerated charge carriers of 0Â 0Â 1-facet-exposed TiO2 with enhanced thermal stability as an efficient photocatalyst

- Exposed 0 0 1 facet of nanocrystalline TiO2 is not stable at high temperature.
- Thermal stability of 0 0 1 facet is enhanced after phosphate modification.
- As a result, lifetime and separation of photogenerated carriers are increased.
- This leads to high photocatalytic activities for degrading acetaldehyde and phenol.
- It is attributed to exposed 0 0 1 facet, increased crystallinity and O2 adsorption.