The growing demand for renewable energy sources has sparked a wave of increased interest into new photocatalytic materials. Water stable metal organic frameworks (MOFs), consisting of octahedral Zr4+ metal ion clusters coordinated by terephthalate ligands in 3D arrays, have gained ever-growing attention in this field due to their high porosity, and tunability making them ideal for guest host interactions. Unfortunately, Zr-MOFs also suffer from poor exciton lifetimes and visible light absorption properties attributed to insulating Zr d0 orbitals. This work uses Ce4+ doping as a simple method to simultaneously induce ligand to metal charge transfer and provide photosensitization to the MOF, without compromising chemical stability. Different solvothermal and mechanochemical post synthetic doping strategies were introduced to (Zr)UiO-66-NH2 to gage which method produces the most ideal photocatalytic properties. Photocatalysis was tested in aqueous systems using rhodamine B as a model organic pollutant. These properties were further characterized using DR-UV/Vis Spectroscopy, and fluorescence quenching experiments. Doping concentrations and Ce4+ interaction were studied using PXRD, isoelectric point measurements and EDX Spectroscopy.

Ce(IV) doped Zr-MOFs for photocatalytic degradation of organic pollutants

Macromolecular Chemistry: The Second Century

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ACS Spring 2020 National Meeting & Expo

The official archive and repository for all ACS Meetings & Expositions abstracts and select posters or presentations.