Synthesis, structural characterization and evaluation of floating B-N codoped TiO2/expanded perlite composites with enhanced visible light photoactivity

- We added expanded perlite as a floating carrier to immobilize B-N codoped TiO2.
- The photo-reaction occurred on the surface of water and easily utilized the solar energy and O2 to make photodegradation efficiently.
- The composites combined the adsorptivity of expanded perlite and photoactivity of B-N-TiO2.
- The floating photocatalysts give a simple way to recycle, which is important to the application of photocatalysis technology.