Selective Photocatalytic C─H Oxidation Using All-Inorganic Perovskite Quantum Dots Encapsulated in UiO-Series MOFs.

Abstract

All-inorganic cesium lead halide (CsPbX₃, X = Cl, Br, I) perovskite quantum dots (PeQDs) are successfully incorporated within the cages of zirconium-based UiO-series metal-organic frameworks (MOFs) using in situ ship-in-a-bottle method at room temperature under ambient conditions. The resulting mBPP-MOF, which includes the 4,4'-(2,2'-bipyridyl-5,5'-diyl)dibenzoic acid (H₂BPP) linker, features a larger cavity size than UiO-66 and UiO-67-bpy, allowing for uniform accommodation of PeQDs within its cages. This PeQDs@MOF hybrid heterostructure enhances the separation and transfer of photogenerated charges, enabling the synthesized CsPbBr₃@mBPP-MOF to demonstrate highly selective and stable performance in the photocatalytic oxidation of toluene under visible light irradiation at 395 nm. This advancement represents a potential breakthrough in organic photocatalysis due to the material's low cost, ease of processing, high efficiency, and tunable bandgap.