Ostwald ripening-induced hollow photoactive Zn-MOF-confined electron-deficient Cu NPs for enhanced photocatalytic oxidative dehydrogenation to quinoline.

A well-defined hollow Cu/Zn-TPBD composite was constructed for the first time via a modified Ostwald ripening method in this study. The unique donor-acceptor architecture in Cu/Zn-TPBD induced enhanced charge separation efficiency compared to parent Zn-TPBD, enabling superior optoelectronic properties and reactive oxygen species generation capacity. This structural advantage enables efficient photooxidative dehydrogenation of 1,2,3,4-tetrahydroquinoline via an ˙O2--mediated pathway.