Optimal condition for fabricating superhydrophobic copper surfaces with controlled oxidation and modification processes

Bahrami, Hamid Reza Talesh; Ahmadi, Behnam; Saffari, Hamid

doi:10.1016/j.matlet.2016.11.076

Cited by 18 publications

(3 citation statements)

References 11 publications

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“…Superhydrophobic surfaces generally have two main characteristics, hierarchical micro/nanostructure and low surface energy [ 13 , 14 ], which determine the good or bad material wettability [ 15 ]. The preparation processes include etching [ 16 ], immersion [ 17 ], deposition [ 18 ], sol-gel [ 19 ], spraying [ 20 ], and so on.…”

Section: Introductionmentioning

confidence: 99%

Construction and Performance of Superhydrophobic Surfaces for Rusted Iron Artifacts

Jia

et al. 2023

Materials

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Ancient iron artifacts need to be protected with a rust layer, often stabilized by tannic acid corrosion inhibition. In humid environments, water vapor could slowly penetrate and trigger galvanic corrosion of metal artefacts. Sealing treatments are generally applied to the artefact surface to isolate water and enhance its corrosion resistance. Superhydrophobic modifications could effectively block the penetration of moisture into the interior of the artefact and provide a nice water barrier. Stearic acid with tannic acid inhibition treatment creates a superhydrophobic protective layer on the surface of rusted iron artifacts and enhances corrosion resistance effectively. Various scientific analyses and testing methods are used in this paper to evaluate the corrosion resistance of rusted surfaces after superhydrophobic modification and investigate the reaction mechanisms. The results indicate that the contact angle of the rusted surface after corrosion inhibition by tannic acid and modified by stearic acid is increased to 152.2°, which means the superhydrophobic protective layer has been successfully constructed. The C/Fe ratio of the rusted surface is increased from 0.21 to 2.10, and the characteristic diffraction peaks of O1s and Fe 2p3/2 shift toward higher binding energy. Stearic acid is combined with the corrosion product layer by chemical bonding. Chelation between rust products, tannic acid, and steric acid is effective, and the chelate is chemically stable. The superhydrophobic surface forms a lamellar wax-like layer as an air barrier to isolate liquid water, resulting in a significant decrease in corrosion current and an increase in Warburg impedance to 217.9 times the original state, with a protection efficiency of 88.3%. Tannic acid corrosion inhibition and stearic acid superhydrophobic modification have an excellent synergistic protective effect on improving the corrosion resistance of iron artifacts, resulting in better corrosion resistance of iron artifact materials. The research provides new ideas and references for the protection of ancient iron artifacts sealing.

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Section: Introductionmentioning

confidence: 99%

Construction and Performance of Superhydrophobic Surfaces for Rusted Iron Artifacts

Jia

et al. 2023

Materials

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“…In addition, due to the thin and uniform self-assembled monolayer (SAM) film, it is often used as a model surface in research applications, 30 which can be designed as a material surface with different properties according to the experimental requirements, so 1-octadecanethiol (ODT) are often adsorbed on the surface of copper substrates to form self-assembled monolayers used in superhydrophobic materials. Talesh Bahrami 31 et al first oxidized the copper mesh with alkali solution and then modified it with a 1-octadecanethiol solution to prepare a self-assembled monolayer on the surface of the copper mesh. However, strong bases are often harmful to the environment.…”

Section: Introductionmentioning

confidence: 99%

Preparation of Superhydrophobic Surfaces Based on Copper Mesh Substrates and Its Application Performance

Ma,

Li,

Niu

et al. 2023

ACS Omega

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“…Preparation of superhydrophobic copper surfaces has been reported in numerous papers by utilizing several techniques such as nanotextured surfaces by using laser beam machining [14] and nanocoatings by employing hydrothermal methods to fabricate CuO film on copper substrate [15]. Several chemical etching and hydrothermal methods, electrodeposition techniques and solution (wet) chemical reaction were also employed such as potentiostatic electrolysis in an ethanolic solution of tetradecanoic acid [16], oxidation in alkaline solutions [17], etching in ammonia solution combined with hydrothermal creation of copper oxide film [18], hydrothermal creation of superhydrophobic Cu 2 S film [19], electrolysis in capsaicin ethanolic solution [20], electrodeposition in myristic acid solution [21], chemical etching in an ammonia solution and consequent calcination in air [22], fabrication of multiscale textured surfaces on copper via electrodeposition in CuSO 4 and H 2 SO 4 [23], an electrochemical modification process in an ethanolic stearic acid solution [24] and electrodeposition to develop multifunctional zinc/polydopamine composite hydrophobic coatings [25].…”

Section: Introductionmentioning

confidence: 99%

Deposition of Super-Hydrophobic Silver Film on Copper Substrate and Evaluation of Its Corrosion Properties

et al. 2021

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A simple and versatile chemical solution deposition process is reported to manipulate the wettability properties of copper sheets. The whole process has the advantage of being time-saving low cost and environment-friendly. An adherent silver coating was achieved under optimal conditions. Scanning electron microscopy and X-ray diffraction were used to examine the silver film structure. A confocal microscope was used to record the 3D topography and assess the film roughness of the surface. A dual morphology was revealed, consisting of broad regions with feather-like structured morphologies and some areas with spherical morphologies. Such silver-coated copper samples exhibited a sufficiently stable coating with superhydrophobicity, having a maximum water contact angle of 152°, along with an oleophilic nature. The corrosion behavior of the produced hydrophobic copper under optimal conditions was evaluated by means of potentiodynamic polarization and electrochemical impedance spectroscopy (EIS) using a 3.5% NaCl solution. The corrosion protection mechanism was elucidated by the proposed equivalent circuits, indicating that the superhydrophobic silver coating acted as an effective barrier, separating the Cu substrate from the corrosive solution. The superhydrophobic coating demonstrated enhanced anti-corrosion properties against NaCl aqueous solution in relation to the copper substrate as indicated from both EIS and potentiodynamic polarization experiments.

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Optimal condition for fabricating superhydrophobic copper surfaces with controlled oxidation and modification processes

Cited by 18 publications

References 11 publications

Construction and Performance of Superhydrophobic Surfaces for Rusted Iron Artifacts

Construction and Performance of Superhydrophobic Surfaces for Rusted Iron Artifacts

Preparation of Superhydrophobic Surfaces Based on Copper Mesh Substrates and Its Application Performance

Deposition of Super-Hydrophobic Silver Film on Copper Substrate and Evaluation of Its Corrosion Properties

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