A kind of biological hybrid material – Trichoderma viride/FeOOH as a durable anticorrosion coating for steel

Abstract

Development of anticorrosive materials is critical and the most efficient way in the innovation of solving corrosion problems. Biological hybrid materials have unique advantages and great potential in the corrosion resistance materials. Herein, a new biological hybrid material was designed by the interaction of Trichoderma viride(T. viride) and Fe-based nanomaterials for anticorrosion of steel in artificial seawater. The results showed that the biological hybrid material - T. viride/FeOOH with a cobweb was successfully synthesized by self-assembly of T. viride and Fe-based nanomaterials on the steel surface. T. viride/FeOOH with thickness only 60 μm exhibited good anti-corrosion effect and its anti-corrosion efficiency reached up to 88.97 %. Further, T. viride/FeOOH was fairly stable, and its corrosion resistance was still up to 87.45 % after 20 d of continuous immersion in seawater. This study provides a new perspective and option for anti-corrosion control of steel in marine environment.

Keywords

• Anticorrosion
• Electrochemical impedance spectrum
• Trichoderma viride
• Carbon steel
• Biological hybrid