Biomimetic one step fabrication of manganese stearate superhydrophobic surface as an efficient barrier against marine corrosion and Chlorella vulgaris-induced biofouling

By Binbin Zhang and Jiarun Li and Xia Zhao and Xiuhua Hu and Lihui Yang and Ning Wang and Yantao Li and Baorong Hou
Published in Chemical Engineering Journal NULL 2016

Abstract

Marine corrosion and biofouling on metallic materials are sticky problems. Herein, we prepared hierarchical structured superhydrophobic (SHPB) surfaces via a versatile one step electrodeposition approach. The synthetic \SHPB\ surface was employed as an efficient barrier against corrosion and Chlorella vulgaris-induced biofouling. The surface morphology and chemical compositions were analyzed using scanning electron microscopy (SEM), atomic force microscopy (AFM), X-ray photoelectron spectroscopy (XPS), Fourier transform infrared spectrophotometer (FTIR) and Energy-dispersive spectrum (EDS). Electrochemical impedance spectroscopy (EIS), potentiodynamic polarization and immersion test in Chlorella vulgaris-inoculated culture medium were carried out to evaluate the anti-corrosion and anti-biofouling performance of the obtained \SHPB\ surface. The results demonstrated that the synthetic \SHPB\ surface exhibits great enhanced corrosion resistance and biofouling mitigation. Moreover, the as-fabricated \SHPB\ surfaces retain superhydrophobicity in wicked environment such as strong acid and alkali conditions, showing good chemical stability. We believe that the \SHPB\ surfaces over metallic substrates provide a potential and worthful strategy for marine corrosion and biofouling.

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