Advanced MOFs-based materials as platforms for carbon dioxide capture and simultaneous photocatalytic conversion

Abstract

As a key strategy for reducing CO₂ emissions, carbon capture and utilization (CCU) has gained increasing attention in the global pursuit of carbon neutrality and decarbonization. In particular, using a single material to achieve both efficient CO₂ capture and photocatalytic CO₂ conversion, thereby converting CO₂ into high-value-added products, represents an attractive strategy. Such an integrated design can not only simplify the process flow and reduce energy consumption and costs, but also minimize losses associated with intermediate steps through in situ conversion, significantly improving overall carbon utilization efficiency. Metal–organic frameworks (MOFs) are porous crystalline materials that can not only serve as physical adsorbents for CO₂ capture but also enable chemisorption through the rational design and optimization of secondary building units, organic linkers, and pore environments. Additionally, by engineering their electronic structures to optimize band structures and charge transport pathways, MOFs can serve as highly promising photocatalysts. Considerable progress has been made in the application of MOFs for CO₂ capture and conversion. However, significant advances are still needed in the development of integrated MOFs-based systems that combine CO₂ capture, enrichment, and in situ photocatalytic conversion. To accelerate progress in this area, a detailed review of recent developments is particularly important. Therefore, this review summarizes recent advances in MOFs-based materials for CCU, with particular emphasis on strategies for enhancing both CO₂ capture and photocatalytic CO₂ conversion. Finally, it discusses the current challenges and future research directions for developing integrated MOFs-based CCU systems.

Graphical abstract

Keywords

Metal-organic frameworks / CO₂ capture / CO₂ reduction / Photocatalytic conversion

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