In the current study, Nation is adopted as a dispersant for assisting the water- phase exfoliation of MoS2. The completely ionized hydrophilic sulfonic groups and hydrophobic polytetrafluoroethylene backbone permit st...In the current study, Nation is adopted as a dispersant for assisting the water- phase exfoliation of MoS2. The completely ionized hydrophilic sulfonic groups and hydrophobic polytetrafluoroethylene backbone permit strong non-covalent bonding interactions between Nation and exfoliated nanosheets for stabilization and functionalization to obtain Nation-modified MoS2 （N-MoS2） nanocomposites. These interactions are stable in different pH environments. The concentration of Nation influences the exfoliation efficiency and the size of the exfoliated nanosheets. N-MoSdNation composite membranes are prepared. The N-MoS2 nanocomposite exhibits good dispersibility in a Nation matrix, benefitting from the functionalization of Nation. The N-MoSdNafion composite membrane shows excellent near-infrared light-controllable multi-shape-memory performance with convenient operation. The Nation-assisted water-phase exfoliation method shows good efficiency, convenient operation, environmental benignity, and broad application potential.展开更多
文摘In the current study, Nation is adopted as a dispersant for assisting the water- phase exfoliation of MoS2. The completely ionized hydrophilic sulfonic groups and hydrophobic polytetrafluoroethylene backbone permit strong non-covalent bonding interactions between Nation and exfoliated nanosheets for stabilization and functionalization to obtain Nation-modified MoS2 （N-MoS2） nanocomposites. These interactions are stable in different pH environments. The concentration of Nation influences the exfoliation efficiency and the size of the exfoliated nanosheets. N-MoSdNation composite membranes are prepared. The N-MoS2 nanocomposite exhibits good dispersibility in a Nation matrix, benefitting from the functionalization of Nation. The N-MoSdNafion composite membrane shows excellent near-infrared light-controllable multi-shape-memory performance with convenient operation. The Nation-assisted water-phase exfoliation method shows good efficiency, convenient operation, environmental benignity, and broad application potential.
