Monometallic Catalytic Models Hosted in Stable Metal–Organic Frameworks for Tunable CO₂ Photoreduction

Abstract

The photocatalytic reduction of CO2 to energy carriers has emerged as one of the most promising strategies to alleviate the energy crisis and CO2 pollution, for which the development of catalyst was considered as the determining factor for the accomplishment of this conversion process. In this study, three stable and isostructural metal–organic frameworks (denoted as MOF-Ni, MOF-Co, and MOF-Cu) have been synthesized and used as heterogeneous catalysts in photocatalytic CO2 reduction reaction (CO2RR). It is worth noting that the MOF-Ni exhibited very high selectivity of 97.7% for photoreducing CO2 to CO, which has exceeded most of the reported MOF-based catalysts in the field. Significantly, the MOFs associated with a monometallic catalytic center offer a simple and precise structural model which allows us to understand more definitively the specific effects of different metal-ion species on photoreduction of CO2 as well as the reactive mechanism.

Keggin‐Type Polyoxometalate‐Based ZIF‐67 for Enhanced Photocatalytic Nitrogen Fixation

“…For the purpose of stabilizing ZIF-67 andp reventing hydrolysis, modifying is af easible measure, including doping guest hydrophobic molecules (e.g.,c arbon nanotubes, fluorinated molecules, and polyoxometalates in their pores). [27][28][29] Polyoxometalates (POMs) that are inorganic polynuclear anionic molecular metal-oxo clusters with the d-block transitional metals (i.e.,M o, W, Nb, V, Ta )w ith highest oxidation states, are considered to be tremendous photoelectric materials and has great potential in utilizing solar energy for the unique characteristic of the inherent analogouss emiconductor. [30][31][32] It is amazing that POMs not only improvesthe stability of ZIF-67, but also are the optimized photocatalytic reduction of N 2 materials owing to distinct characteristics:…”

Recent Innovation of Metal-Organic Frameworks for Carbon Dioxide Photocatalytic Reduction

“…Wang et al established an isostructural stable MOFs for efficient CO 2 photocatalytic reduction. Three heterogeneous monometallic photolytic catalysts were designed along with single nodal transition-metal center (Cu II , Co II , and Ni II ): MOF-Cu ((Cu 3 (TCA) 2 (dpe) 3 (H 2 O) 3 ) n ), MOF-Co ((Co 3 (TCA) 2 (dpe) 3 (H 2 O) 6 ) n ), and MOF-Ni ((Ni 3 (TCA) 2 (dpe) 3 (H 2 O) 6 ) n ) [173].…”

Transition Metal Complexes with Flufenamic Acid for Pharmaceutical Applications—A Novel Three-Centered Coordination Polymer of Mn(II) Flufenamate

“…Progress in the efficient synthesis and design of CPs [ 7 , 8 ] prompted diverse applications in technologies crucial for civilization development. The gas and energy storage [ 9 , 10 ], intelligent drug delivery [ 11 ], production of smart catalysts and recent, remarkable advancements in tunable catalysis are among the most important of these applications [ 12 , 13 ].…”