Dimensional engineering of metal-organic framework-based electrocatalysts for CO2 reduction

초록

The increased use of fossil fuels has resulted in elevated concentrations of atmo- spheric carbon dioxide, which contributes to the greenhouse effect and other climate-related challenges. CO2 emissions and research seeking solutions have been discussed across various fields for decades. Among proposed solutions, converting atmospheric CO2 into valuable fuels and chemicals using catalysts represents a promising approach for reducing CO2 concentrations. The electroca- talytic CO2 reduction reaction (eCO RR) has attracted considerable attention due 2 to its eco-friendly process compared to other conversion reactions. However, owing to the challenges of producing numerous by-products and the difficulty of controlling selectivity, recent research has focused on overcoming these prob- lems. Metal–organic frameworks (MOFs) represent promising candidate materials for eCO RR applications due to their ability to capture CO 2 2 through pore size adjustment and accessibility to open metal sites, as well as their engineering ver- satility. Recent advances have demonstrated the development of MOF-based catalysts through diverse strategies that increase activity and selectivity for target products. MOF-based materials offer easier structural modification compared to other pure metal-based catalysts. In this review, we examine MOF-based mate- rials from the perspective of engineering strategies and performance in eCO2RR, focusing on morphology control as a means of modifying the electronic struc- ture and the distance between active sites within the framework.

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