Fabrication of flower-like copper film with reversible superhydrophobicity–superhydrophilicity and anticorrosion properties

Superhydrophobic/Superoleophilic Surfaces by Electroless Nanoparticle Deposition and Perfluorinated Polymer Modification

“…Ag + oxidizes Cu metal to form Cu 2+ , while Ag + is reduced to its elemental form, followed by the processes of nucleation, adsorption on the Cu substrate, growth, and branching to form particles. 4 The increased roughness of the Ag-coated surface produces a higher CA of 91 ± 2°, but the hydrophobicity is limited by the porosity, in which water droplets can fill the microscopic grooves and be absorbed easily. The presence of a low-surface-energy coating that covers a rough surface can overcome this issue, while further enhancing hydrophobicity.…”

“…19,20 It is these features that inspired the design and fabrication of past and current artificial superhydrophobic surfaces, all of which involve increasing the surface roughness and reducing the surface free energy. 1,2,4,10,12,13 Plasma etching, layer-by-layer assembly, lithography, sol−gel, electro-spinning, and chemical/physical vapor deposition are among the most notable approaches for creating rough surfaces exhibiting superhydrophobicity. 17,18,21,22 While these preparation techniques may be elegant, some of them may involve harsh experimental conditions, multistep procedures, or use of specialized reagents and instrumentation.…”

“…23 Shi et al fabricated superhydrophobic surface with flower-like structures on zinc plates by electroless deposition of Cu films and subsequent surface modification by dodecanethiol. 4 Ogihara et al prepared superhydrophobic nickel−boron films by electroless deposition on Cu substrates and further modified with trimethylsiloxysilicate. 5 In our study, we prepared a water-repellent surface using electroless deposition to coat a Cu metal substrate with a rough textured layer of Ag by immersion in aqueous AgNO 3 solution.…”

Switchable and Reversible Superhydrophobic Surfaces: Part One

“…When the subfreezing film was placed in ambient environment, the humidity in the air condensed to the subfreezing surfaces and increased the surface hydrophilicity. Otherwise, inorganic materials could also be coated using a hydrophobic material in order to achieve superhydrophobic properties [175][176][177][178][179]. Here, the heat treatment could induce the desorption Figure 18.…”

Facile Fabrication of Superhydrophobic Copper- Foam and Electrospinning Polystyrene Fiber for Combinational Oil–Water Separation

“…The pine-cone-like hierarchical micro-nanostructure [23], the surface distributed grooves and ridges in micrometer scale and many nano-wrinkles [24], and the unique nanoworm-like structure [25] were mainly modified by fluorosilane previously. Also, some other examples involve rodlike nanostructures of Cu(OH) 2 [26,27], highly dense ordered Cu 2 O nanorods [28], flower-like [29], leaves-like, and wormlike micro-/nano-scale structures [30,31], and these hydrophobic surfaces were finally modified by n -alkanethiolates [32]. To some extent, the techniques described above were efficient for separating mixtures of water and oil, however, there are some disadvantages that need to be overcome, such as time-consuming and complicated fabrication, special equipment, and expensive materials.…”