Improved photocatalytic performance of covalent organic frameworks by nanostructure construction.

Here, we demonstrate for the first time the construction of covalent organic framework (COF) capsules with nanostructured surfaces, which combine advantages of highly accessible surface area, excellent light absorbance, and efficient separation of photogenerated electron-hole pairs. The COF capsules exhibit high activity and selectivity for photocatalytic oxidation under mild conditions.