Abstract
This paper presents a facile method for preparing Ag nanoparticle (NP)-loaded superamphiphobic surfaces on an Al substrate with efficient anticorrosion and antibacterial properties. A hierarchical steplike microstructure with nanopores is fabricated on an Al surface through facile chemical etching and anodization; subsequent fluorination confers superhydrophobic and superoleophobic properties to this surface. Ag NPs are loaded on the surface nanopores and stabilized by a self-assembled aminopropyltriethoxysilane monolayer through amino-group bonding to prevent aggregation and loss of Ag NPs. Compared with Ag NP-loaded pristine Al substrates, the Ag NP-coated superamphiphobic surface can effectively prevent corrosion of the Al substrate and bacterial absorption, as confirmed by electrochemical impedance spectroscopy, Tafel plot measurement, and bactericidal tests. This study provides novel insights into functional superamphiphobic materials with anticorrosion and antibacterial properties.
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