摘要
Airborne particulate matter(PM)has been the leading contributor to air pollution,posing a substantial risk to human health,and effective filtration technologies are required.Two-dimensional(2D)materials,such as graphene,graphitic carbon nitride(g-C3N4),molybdenum disulfide(MoS2),and MXenes have emerged in recent years for PM filtration due to their exception-ally large specific surface area and unique electrical properties.Here,the most extensively used 2D materials for PM filtration followed by a summary of their fabrication methods and corresponding morphologies were introduced.Among them,the coating is the most cost-effective technique for achieving large-scale and quick fabrication.Electrospinning can effectively enhance filtration efficiency and reduce pressure drop by upgrading electrostatic force and lowering the fiber diameter.The initial and long-term performance of 2D-material-based filters was summarized.Among all 2D materials,GO is the most studied and shows the best performance by upgrading the dipole–dipole and electrostatic interaction between filters and PM.Future study is expected to explore various 2D materials beyond GO,to evaluate filtration efficiency for submicron PM at m/s level air velocity,and to extend the service life for potential applications.
基金
supported by the Guangdong Major Project of Basic and Applied Basic Research(2021B0301030002)
the Key R&D Program of Guangdong Province(2020B010189001,2019B010931001 and 2018B030327001)
the National Natural Science Foundation of China(52025023,51991342,52021006,92163206,11888101,51972069)
the Science and Technology Projects in Guangzhou(202102010470).
