摘要In this study,an integrative bioinspired coating system for antifouling and corrosion resistance was investigated,in which self-healing nanocapsules(tung oil calcium alginate,TO@CA),doped polyaniline and nano-titanium dioxide nanocomposites(SPAn-TiO2)and a biostructure metal surface were combined.The antifouling property of the bioinspired coating resulted from the synergistic antifouling effect of nano-TiO2 and acid-doped polyaniline in SPAn-TiO2.The protonated nitrogen with a positive charge in SPAn-TiO2 and the intrinsic bactericidal property of nano-TiO2 could damage negatively charged single-celled chlorella,endowing the composite coating with good antifouling performance(less algae attached on the surfaces after a 90-day antifouling test and a conductivity test).The composite bioinspired coating had excellent corrosion resistance,which was due to the good synergistic anticorrosion barrier effect of SPAn-TiO2 with TO@CA nanocapsules and the repairing ability of microcracks of TO@CA nanocapsules during the corrosion process.The bioinspired coating with 2 wt％SPAn-TiO2 and 2 wt％TO@CA nanocapsules exhibited a better adhesion,corrosion resistance and antifouling performance than the other coatings did.