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HKUST-1 as a Heterogeneous Catalyst for the Synthesis of Vanillin
Published on: July 23, 2016
Functionalized Thorium-Based Metal-Organic Frameworks for the Photocatalytic Oxidation of 1, 5-Dihydroxynaphthalene
Hui Zhou1, Ran-Wei Zhang1, Xiao-Yue Pan1
1Nanjing Forestry University, College of Materials Science and Engineering, CHINA.
Abstract:
It is still a challenging task to rationally design metal-organic framework (MOF) crystal catalysts with excellent light absorption and charge transfer for efficient photocatalytic reactions. In this work, the hexanuclear thorium clusters, porphyrin derivative ligands, and linear carboxylic acid ligands were assemed into Th-based metal-organic frameworks (Th6-TCPP, Th6-Co-TCPP, and Th6-Ni-TCPP) by the mixed ligand method. The three prepared MOF crystals were applied in the photocatalytic oxidation of 1, 5-dihydroxynaphthalene (1, 5-DHN) for the synthesis of juglone. Among them, Th6-TCPP exhibited optimum photodynamic activity for production of reactive oxygen species. Under lillumination, Th6-TCPP resulted in photochemical reaction conversion rate up to 95 % for 9, 10-diphenylanthracene (DPA) and 54.5 % for 1, 5-DHN. The good catalytic effect was attributed to the large conjugate system of porphyrin and the enhanced photosensitivity of bipyridine.
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