Fig. 2From: Magnetic COFs as satisfactory support for lipase immobilization and recovery to effectively achieve the production of biodiesel by maintenance of enzyme activitySEM image of A COF-OMe; TEM image (B) and SEM image (C) of core–shell structure Fe3O4@COF-OMe; SEM image (D) of RML@Fe3O4@COF-OMeBack to article page