Kemiska sektionen

Souvik's paper in Chem Comm


The new paper by Souvik and others adresses the role of transport channels in the performance of catalyst-MOF composites.

Roy, S. et al. Catalyst Accessibility to Chemical Reductants in Metal-Organic Frameworks. Chem. Commun. (2017). doi:10.1039/C7CC00022G

The article in Chem Comm.

A molecular H2-evolving catalyst, [Fe2(cbdt)(CO)6] ([FeFe], cbdt = 3-carboxybenzene-1,2-dithiolate), has covalently been attached to an amino-functionalized MIL-101(Cr) through an amide bond. Chemical reduction experiments reveal that the MOF channels can be clogged by ion pairs that are formed between oxidized reductant and reduced catalyst. This effect is lessened in MIL-101-NH-[FeFe] with lower [FeFe] loadings. On longer timescales, it is shown that large proportions of the [FeFe] catalysts within the MOF engage in photochemical hydrogen production and the amount of produced hydrogen is proportional to the catalyst loading.