A Titanium(IV)-Based Metal-Organic Framework Featuring Defect-Rich Ti-O Sheets as an Oxidative Desulfurization Catalyst.
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.
['Smolders|Simon|S|http://orcid.org/0000-0002-3622-2022', 'Willhammar|Tom|T|', 'Krajnc|Andraž|A|', 'Sentosun|Kadir|K|', 'Wharmby|Michael T|MT|', 'Lomachenko|Kirill A|KA|http://orcid.org/0000-0003-0238-1719', 'Bals|Sara|S|', 'Mali|Gregor|G|', 'Roeffaers|Maarten B J|MBJ|', 'De Vos|Dirk E|DE|http://orcid.org/0000-0003-0490-9652', 'Bueken|Bart|B|http://orcid.org/0000-0002-4610-7204']
metal-organic frameworks oxidative desulfurization titanium Ti-oxo sheets photocatalysis