Progress in Two-Dimensional Carbon-Based Janus Films
Carbon nanomaterials,represented by carbon nanotubes and graphene,have excellent physical,chemical,electrical and optical properties.Their controllably assembled 2D carbon-based films have high specific surface area,high transmittance and good flexibility,and are widely used in flexible films,microelectronic devices and energy storage.On this basis,the polymer components were introduced to be combined to form 2D carbon-based Janus films,which not only maintain the electrical and thermal conductivity,but also combine the stimulus-responsive and modulation properties of polymers,and achieve synergistic physical and chemical properties through asymmetric features,which greatly expand their application areas.This paper reviewed the recent research on 2D carbon-based Janus films.First,the preparation methods of 2D carbon-based Janus films,their advantages and disadvantages were introduced from both physical methods,including interfacial film formation,vacuum filtration,and layer-by-layer assembly,and chemical methods,including interfacial polymerization and chemical grafting.Then,the current status of 2D carbon-based Janus films was summarized for their applications in various fields such as sensing,actuation,seawater desalination,and oil-water separation.Finally,the development prospects and challenges of 2D carbon-based Janus films were discussed.
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