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

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

Abstract

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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