A Titanium(IV)-Based Metal-Organic Framework Featuring Defect-Rich Ti-O Sheets as an Oxidative Desulfurization Catalyst.
Simon SmoldersTom WillhammarAndraž KrajncKadir SentosunMichael T WharmbyKirill A LomachenkoSara BalsGregor MaliMaarten B J RoeffaersDirk E De VosBart BuekenPublished in: Angewandte Chemie (International ed. in English) (2019)
While titanium-based metal-organic frameworks (MOFs) have been widely studied for their (photo)catalytic potential, only a few TiIV MOFs have been reported owing to the high reactivity of the employed titanium precursors. The synthesis of COK-47 is now presented, the first Ti carboxylate MOF based on sheets of TiIV O6 octahedra, which can be synthesized with a range of different linkers. COK-47 can be synthesized as an inherently defective nanoparticulate material, rendering it a highly efficient catalyst for the oxidation of thiophenes. Its structure was determined by continuous rotation electron diffraction and studied in depth by X-ray total scattering, EXAFS, and solid-state NMR. Furthermore, its photoactivity was investigated by electron paramagnetic resonance and demonstrated by catalytic photodegradation of rhodamine 6G.
Keyphrases
- metal organic framework
- solid state
- highly efficient
- electron microscopy
- electron transfer
- crystal structure
- high resolution
- optical coherence tomography
- visible light
- solar cells
- hydrogen peroxide
- magnetic resonance imaging
- risk assessment
- energy transfer
- quantum dots
- nitric oxide
- ionic liquid
- oxide nanoparticles
- mass spectrometry
- monte carlo