Controlled facile synthesis and photocatalytic activity of ultrafine high crystallinity TiO2 nanocrystals with tunable anatase/rutile ratios

- We devised a facile route for the controllable synthesis of TiO2 nanocrystals.
- The anatase/rutile ratios can be tunable by sample adjusting aging time.
- The well-crystallized TiO2 nanocrystals exhibit higher photocatalytic activities.