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Eggplant-derived hierarchical porous graphitic biochar possessed good electrochemical performance as oxygen reduction reaction catalyst for microbial fuel cells.

The development of strategies for producing well-defined chiral porous membranes for the rapid and efficient enantioseparation of racemic mixtures remains a great challenge. Herein, we introduced an innovative, simple and easily scalable synthetic strategy to manufacture chiral porous polymer membranes (CPPMs) bearing chiral NH groups by crosslinking single-component chiral poly(ionic liquid)s (PILs) with water molecules via hydrogen (H)-bonding. The chiral evolution process from ionic liquid monomers to PILs to chiral porous membrane was well-demonstrated by a suite of experimental results from single crystals structural analysis, 1 H-NMR spectra, circular dichroism spectrum and in-situ scanning confocal microscopy. We demonstrated that these CPPMs are capable of efficient enantioseparation of drug enantiomers via directional H-bonding interactions and created a novel chiral membrane separation system.