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Research on Graphene/Polyacrylonitrile Composite Nanofiber Membranes

Author(s)

Shangjun Zuo

Affiliation(s)

Oklahoma university, Stillwater, 74078, The USA

Abstract

In recent years, electrospun nanofiber membranes have attracted extensive attention due to their advantages of high-efficiency particulate filtration and low pressure drop. However, traditional polymer nanofiber filter membranes have certain limitations in mechanical strength, thermal stability, and functionality. Graphene, with its outstanding two-dimensional structure, mechanical properties, and surface activity, is known as the "king of new materials". Incorporating it into the polyacrylonitrile (PAN) nanofiber matrix can form a synergistic composite membrane, effectively enhancing the comprehensive performance of the filter membrane. This paper comprehensively reviews the research progress of graphene/PAN composite nanofiber membranes: covering the background and significance of PM₂.₅ filtration, the preparation methods of graphene composite electrospun membranes, their microstructure and performance characterization, as well as their application effects in air purification and other fields. Literature results show that graphene/PAN composite membranes can achieve a pressure drop of less than 70 Pa while maintaining a fine particulate matter filtration efficiency of over 99%, and have mechanical strength several times that of the original membrane. Moreover, this composite membrane exhibits excellent stability and durability in harsh environments such as high temperatures and corrosive conditions. Based on the analysis of existing literature data, this paper summarizes the mechanism by which graphene improves the performance of PAN nanofiber membranes and looks forward to their application prospects in high-efficiency air filtration and related fields.

Keywords

Graphene; Polyacrylonitrile; Nanofiber Membrane; Electrospinning; Air Filtration

References

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