Covalently Anchored\nMolecular Catalyst onto a Graphitic\nCarbon Nitride Surface for Photocatalytic Epoxidation of Olefins

This study explores an innovative photocatalytic approach\nusing\npristine graphitic carbon nitride (C<sub>3</sub>N<sub>4</sub>) to\nanchor iron salen-type complexes (FeSalenCl<sub>2</sub>) without the\nneed for additional linkers or heterojunctions. The resulting hybrid\ncatalyst, [C<sub>3</sub>N<sub>4</sub>-FeCl­(Salen)]<sub>Chem</sub>,\nexhibits a promising catalytic performance in the selective epoxidation\nof cyclic and linear olefins using gaseous oxygen as the oxidant.\nThe catalyst’s selectivity closely resembles that of the free\niron complex, and its effectiveness varies depending on the olefin\nsubstrate. Additionally, solvent selection plays a critical role in\nachieving optimal performance, with acetonitrile proving to be the\nbest choice. The study demonstrates the potential of C<sub>3</sub>N<sub>4</sub> as an environmentally friendly, recyclable, and efficient\nsupport for molecular catalysts. The results highlight the versatility\nand significance of C<sub>3</sub>N<sub>4</sub>-based materials in\nadvancing light-driven catalysis.