Photocatalytic ethylene production over defective NiO through lattice oxygen participation.

ABSTRACT: Lattice oxygen-mediated photocatalytic ethane dehydrogenation represents a sustainable strategy for ethylene production, yet achieving a balance between high productivity, selectivity, and durability remains challenging. Here, we report a defective NiO-300 catalyst, where precisely engineered Ni vacancies activate lattice oxygen by weakening Ni-O bond and improving lattice oxygen mobility. This promotes efficient ethane activation and C-H bonds cleavage through photoinduced hole capture, intensifying ethane dehydrogenation via a light-boosted Mars-van Krevelen mechanism. The NiO-300 catalyst manifests a high ethylene yield of 604.5 μmol g^-1 h^-1 with 100% selectivity and stability over 200 cycles. In situ spectroscopic and theoretical studies elucidate the generation o

SUBMITTER: Wei F 

PROVIDER: S-EPMC12271538 | biostudies-literature | 2025 Jul

REPOSITORIES: biostudies-literature