Enhanced photocatalytic activity of TiO2 thin films on plasma-pretreated organic polymers

- Air plasma modifies PVC, PS and PMMA surface tension and roughness, improving the wettability.
- Low-pressure plasma is required to avoid damage to thin, thermal sensitive substrates.
- Exposures of 600 s to air LPP with discharge power of 300 W promote stable wettability properties.
- TiO2 layer fixation on polymers is favoured with the plasma pretreatment.
- Accordingly, a notable improvement of the photocatalytic activity is obtained.