Université de Fribourg

Hierarchically porous reduced graphene oxide coated with metal–organic framework hkust-1 for enhanced hydrogen gas affinity

Song, Kyung Seob ; Kim, Daeok ; Coskun, Ali

In: ACS Applied Nano Materials, 2020, vol. 3, no. 2, p. 985–991

Metal–organic frameworks (MOFs) are crystalline porous materials that have been actively explored for various gas storage, separation, and conversion applications because of their structural tunability. While the micropores (<2 nm) in MOFs are essential for increased gas affinity, these small pores significantly decrease the mass-transport kinetics. One way to address this challenge is to ...

Université de Fribourg

Bimetallic metal organic frameworks with precisely positioned metal centers for efficient H2 storage

Kim, Daeok ; Song, Kyung Seob ; Buyukcakir, Onur ; Yildirim, Taner ; Coskun, Ali

In: Chemical Communications, 2018, vol. 54, no. 86, p. 12218–12221

We demonstrated that the ratio and position of two different metal ions, Pd and Cu, can be precisely controlled within MOFs through predesigned metal clusters. These MOF structures incorporating Pd–Cu paddle wheel units were synthesised simply by reacting Pd–Cu acetate metal clusters and tritopic organic linkers at room temperature. Pd–Cu open metal sites were found to be uniformly...