COF Scaffold Membrane with Gate‑Lane Nanostructure for Efficient Li+/Mg2+ Separation (IMAGE)

Shanghai Jiao Tong University Journal Center

COF Scaffold Membrane with Gate‑Lane Nanostructure for Efficient Li+/Mg2+ Separation

Caption

  • Covalent organic framework (COF) scaffold membranes with gate-lane nanostructure were prepared.
  • The gating layer affords high rejection to Mg2+ and thus high Li+/Mg2+ selectivity. The permeating layer bearing Li+ lanes and Cl− lanes facilitates Li+ transport and thus high Li+ permeability.
  • The COF scaffold membrane exhibits the true selectivity of 231.9 with Li+ enrichment of 120.2% at the Mg2+/Li+ mass ratio of 50, exceeding the ideal selectivity of 80.5.

Credit

Zixuan Zhang, Yan Kong, Runlai Li, Xiaolin Yue, Hao Deng, Yu Zheng, Sui Zhang*, Runnan Zhang*, Zhongyi Jiang*.

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