Controlling crystallization in covalent organic frameworks to facilitate photocatalytic hydrogen production.

ABSTRACT: The catalytic performance, depending on the surface nature, is ubiquitous in photocatalysis. However, surface engineering for organic photocatalysts through structural modulation has long been neglected. Here, we propose a zone crystallization strategy for covalent organic frameworks (COFs) that enhances surface ordering through regulator-induced amorphous-to-crystalline transformation. Dynamic simulations show that attaching monofunctional regulators to the surface of spherical amorphous precursor improves surface dynamic reversibility, increasing crystallinity from the inside out. The resulting COF microspheres display surface-enhanced crystallinity and uniform spherical morphology. The visible photocatalytic hydrogen evolution rate reaches 126 mmol g^-1 h^-1 for the

SUBMITTER: Lin Z 

PROVIDER: S-EPMC11850636 | biostudies-literature | 2025 Feb

REPOSITORIES: biostudies-literature