A hexanuclear cobalt metal–organic framework for efficient CO₂ reduction under visible light

Abstract

A hexanuclear cobalt metal–organic framework with excellent properties for CO2 reduction under visible-light irradiation is reported and the mechanism is revealed through density functional theory calculation.

Metal–Organic Frameworks Encapsulating Active Nanoparticles as Emerging Composites for Catalysis: Recent Progress and Perspectives

“…Different from traditional photocatalysts, MOFs show some distinct photocatalytic properties arising from metal node, organic linker or both . To effectively separate electron and hole generated by light irradiation and improve the catalytic efficiency, MOFs are promising hosts for encapsulating electron acceptors and semiconductive NPs, such as metals, metal oxides, POMs, photoactive metal complexes or dyes, in which they will generate intriguing synergy functions compared with single counterparts.…”

Strongly visible light-absorbing metal–organic frameworks functionalized by cyclometalated ruthenium(ii) complexes

“…Ruthenium(II) complexes with bipyridine (bpy) derived ligands, which are known for their intense metal-ligand charge transfer (MLCT) transitions, constitute a class of photosensitizers that have been studied in both of these settings. 16,[18][19][20][21][22][23][24][25][26] Another eld of photochemistry in which Ru(II) complexes play a central role is their use in dye sensitized solar cells (DSSCs). 27,28 Here, the replacement of N-N (bpy-type) ligands with structurally analogous N-C ligands (cyclometalated phenylpyridines) has successfully provided enhanced absorption of visible light.…”

Metal–Organic Frameworks and Their Derived Materials as Electrocatalysts and Photocatalysts for CO2 Reduction: Progress, Challenges, and Perspectives

“…[16c] By tuning the metal nodes and organic linkers, the charge transfer and light absorptionc an be modified to design effective MOF-based photocatalysts. [39] In addition to the high adsorption capacity of CO 2 that reaches up to 55.24 cm 3 g À1 and 38.17 cm 3 g À1 at 273 Ka nd 298 K, the as-prepared photocatalyst generates 39.36 mmol CO and 28.13 mmol H 2 under visible light after a 3h test. Combining the adsorption capacity and photocatalytic activity of MOFs, Zhao et al developed ap illared-layerp orousM OF with Co II clusters.…”

“…Combining the adsorption capacity and photocatalytic activity of MOFs, Zhao et al developed ap illared-layerp orousM OF with Co II clusters. [39] In addition to the high adsorption capacity of CO 2 that reaches up to 55.24 cm 3 g À1 and 38.17 cm 3 g À1 at 273 Ka nd 298 K, the as-prepared photocatalyst generates 39.36 mmol CO and 28.13 mmol H 2 under visible light after a 3h test. DFT calculations further elucidates that electrons on reduced [Ru(bpy) 3 ]Cl 2 ·6 H 2 O( bpy = 4'4-bipyridine) could transfer to the MOF structure and facilitatet he activation of the ad-sorbedC O 2 molecule.…”