对富氮COFs改性提高CO_(2)捕获性能的研究进展

Research progress on the modification of N-rich COFs to improve the performance of CO_(2) capture

化石能源和碳基材料的大量消耗促使CO_(2)排放量不断增加,如何减少碳排放已成为一个亟待解决的环境问题。富氮共价有机框架(COFs)作为一类高效的CO_(2)捕获材料,从众多CO_(2)捕获和封存技术中脱颖而出。该类材料具备有高含氮量、较大的活性表面、丰富的孔道结构和优异的化学稳定性。由于富氮COFs的CO_(2)捕获性能一般,通过在富氮COFs的活性表面引入功能化基团和掺杂元素进行改性,增强材料与CO_(2)之间的吸附作用,使其展现出更加优异的CO_(2)捕获性能和循环吸附性能。综述了对富氮COFs改性提高CO_(2)捕获性能的研究进展,简要总结了富氮COFs的含氮量水平对CO_(2)捕获性能的影响,分析了富氮COFs在CO_(2)捕获领域的应用现状,最后对今后面临的挑战和未来发展趋势进行展望,以期为未来设计合成结构稳定、性能优良的富氮COFs材料提供参考。

CO_(2)emissions are increases with years,which are become urgent environmental problem due to the massive consumption of fossil energy and carbon-based materials.As novel and efficient material to capture CO_(2),nitrogen-rich covalent organic frameworks(N-rich COFs)stands out from numerous CO_(2) capture and storage technology filed.The material possesses high nitrogen content,large active surface,rich pore structure and excellent chemical stability.Due to the general CO_(2)capture performance of N-rich COFs,N-rich COFs can exhibit excellent CO_(2) capture performance and cyclical adsorption performance through introducing functional groups and doping elements on the active surface of N-rich COFs to enhance the adsorption.The research progress of increasing CO_(2) capture performance through modification of N-rich COFs was reviewed.The influence of nitrogen content level of N-rich COFs on CO_(2)capture performance was briefly summarized,and analyzed the application status of N-rich COFs in the field of CO_(2)capture.Finally,the future challenges and development trends were prospected,the results can be used as a reference for the design and synthesis of stable and excellent N-rich COFs materials.