Beneficial cooperative effect between Pd nanoparticles and ZIF-8 material for hydrogen storage

Influence of the 2-methylimidazole/zinc nitrate hexahydrate molar ratio on the synthesis of zeolitic imidazolate framework-8 crystals at room temperature

“…ZIFs possess the unique properties of high crystallinity, large surface area, exceptional chemical and functional tunability. As a result, ZIFs have gained considerable attention for their potential application in gas storage 2 , CO 2 capture 3,4 , separation 5,6 , sensing 7 , catalysis 8 , drug delivery 9,10 and water treatment 11,12 . Zeolitic imidazolate framework-8 (ZIF-8), with sodalite (SOD) topology constructed from Zn and Hmim, is one of the most investigated ZIF materials 13–15 .…”

Pd(/Fe3O4)-on-ZIFs: nanoparticle deposition on (nano-)MOFs from ionic liquids

“…46 MNP-on-ZIF-NPs could have particularly small poreopenings, suitable for accumulating small molecules, e.g. for H 2 spillover, 70 potentially enhancing hydrogenation catalysis. The on-surface localization removes size-selectivity and protection, but potentially allows viable catalyst materials, provided that the on-surface embedding is rm (Fig.…”

“…in Rh@ZIF-8 69 ). Among such examples a significant share of MNP-on-ZIFs could be the Pd/ZIF-8 (PdCl 2 as a precursor) 70,71 or in the first step in the preparation of ZIF-8/(Pd or Au)/ZIF-8 core–shell particles using nearly nanoparticulated supports. 65 Predominantly on-surface deposition could also be reached by use of grafting groups, like –COOH in Pd/modif-ZIF-8, 72 by casting PVP-stabilized NPs, 73 or, crudely, via simple grinding.…”

Interactions of Hydrogen with Pd@MOF Composites

“…However, the existence of such phenomenon and subsequent increase of the hydrogen storage capacity at room temperature has not been proven. In fact despite some suggestions,,,, it has been found that no enhancement of the capacity occurs through hydrogen spillover for MOFs and COFs loaded with Pd nanoparticles.…”