Volume
Volume 4, Issue 3 (2024) – 13 articles
Cover Picture: Electrochemical CO2 reduction is regarded as one of the most promising CO2 utilization technologies, offering an efficient means of converting CO2 into high value-added products, such as CO, formic acid, and C2H4. Among these, CO stands out as a key industrial feedstock. Nevertheless, the single-pass yield of CO in CO2 electroconversion is typically not high, resulting in a low CO concentration in the tail gas, which complicates and increases the cost of subsequent separation and utilization. Hence, directly and efficiently utilizing the low-concentration CO in the tail gas has significant research significance. We designed and synthesized a unique 2-methylimidazole-modified nickel phthalocyanine, which could be used for the construction of a "mortise and tenon" structured MOF. This MOF was then pyrolyzed to produce a single-atom Ni catalyst with dispersed Ni-N4 sites. The catalyst shows excellent CO2-to-CO conversion performance. Exemplarily, the cascade electro-chemo synthesis of amide polymers was further achieved through the aminocarbonylation reaction by directly using the electrolytic CO in tail gas. This cascade model enables the integrated conversion of CO2 into polymers, providing a potential path for future practical applications.
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