▎ 摘　　要

We demonstrate enhanced anti-corrosion and anti-biofouling properties of graphene oxide-silica-polydimethylsiloxane (GSP) coating on carbon steel (CS). Electrochemical analyses of GSP-coated carbon steel exposed to Gram-positiveBacillussp., Gram-negativePseudomonassp., and freshwater bacterial cultures for 72 h showed a 3-5 orders of magnitude reduction ini(corr)values and high impedance values (10(7) omega) as compared with polished specimens. The corrosion protection efficiency of GSP-coated specimens was 99.9% againstBacillussp. and freshwater culture and it was 89.6% againstPseudomonassp. Evaluation of anti-biofouling property of GSP coating using microbiological and epifluorescence microscopic techniques showed three order reductions in total viable cells on GSP-coated specimens exposed to bacterial cultures. Confocal laser scanning microscopic analysis of biofilm architecture confirmed a significant reduction of biomass and biofilm thickness on GSP-coated CS demonstrating an excellent anti-biofouling activity of GSP.