Green photocatalytic oxidation materials have attracted extensive research interest as an eco-friendly strategy for sustainable development in environmental and chemical engineering. In this work, a novel two-dimensional cerium-based metal-organic framework (Ce-MnTCPP) was solvothermally synthesized under mild conditions. The framework was constructed from MnTCPP, a manganese porphyrin ligand formed by the coordination of Mn2+ ions with tetra (4-carboxyphenyl) porphyrin (TCPP), and cerium ions, and was demonstrated to be a highly efficient photocatalyst for the selective oxidation of tetrahydroquinoline. Under 395 nm LED irradiation, it showed outstanding catalytic performance, reaching nearly 99% conversion and 96% product yield under optimized conditions. Recycling experiments verified its excellent stability, retaining over 90% efficiency after five cycles. Substrate scope studies confirmed its broad applicability toward various substituted tetrahydroquinoline derivatives. Overall, this 2D Ce-MnTCPP MOF provides an efficient platform for green oxidative organic synthesis and offers valuable guidance for developing advanced MOF-based photocatalysts for sustainable transformations.
Yang et al. (Fri,) studied this question.