Nacre-Inspired Chitosan/CaCO Films with High Transparency and Underwater Superoleophobic Property for Efficient Oil/Water Separation.

Numerous natural architectures achieve multifunctionality through mild formation processes. Natural nacre is composed of about 90 wt % calcium carbonate aragonite flakes and 5 wt % chitin, exhibiting excellent mechanical properties, optical transmittance, and underwater superoleophobicity. In this work, a nacre-inspired biomineralized film with high transparency and mechanically robust underwater superoleophobicity was synthesized through Mg-PAA coordinated regulation under ambient conditions.