The article is the result of a collaboration with CEITEC - Central European Institute of Technology within the OPUS LAP project funded by Narodowe Centrum Nauki

Anatase and rutile nanoparticles (NPs) can photosensitize cationic polymerization.

Anatase and rutile NPs can directly photoinitiate free-radical polymerization.

Enhanced cationic polymerization occurs for high band-gap energy NPs.

Enhanced free-radical polymerization occurs for low band-gap energy NPs