Abstract
Superhydrophobic surfaces have attracted extensive attentions due to their promising potential for broad applications. However, the complex preparation process and expensive low-surface-energy modifier significantly constrain its large-scale practical applications. Thus, construction of robust liquid-repellent surfaces via a facile and versatile approach without assistance of binder or post-modification is still highly desired and challenging. In this work, we synthesized superhydrophobic organic–inorganic coupling PVDF@SiO2 hybrid particles by thiol-ene click reaction using the branched thiol-terminated pentaerythritol tetra(3-mercaptopropionate) (PETMP) as cross-linking agent. The prepared PVDF@SiO2 hybrid particles could be used as building units to construct robust inorganic–organic composite superhydrophobic coating on various substrates through a simple spraying-curing process without any post-modification treatments. Owing to its high intermolecular cohesive force and self-film formation property of PVDF matrix, the fabricated coating possesses stable superhydrophobicity even after withstanding mechanical destruction or chemical harsh conditions. More importantly, the PVDF@SiO2 coating tremendously enhanced anti-corrosion property of Cu plate by orders of magnitude, with the corrosion current decreasing from 6.15 × 10–3 to 3.92 × 10–6 mA cm−2. Therefore, this strategy for constructing superhydrophobic composite coatings on various substrates could promote the advancement of interfacial superwetting technology and provide promising potentials for large-scale practical applications.
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Acknowledgements
This work was supported by the National Natural Science Foundation of China (no. 52205313), Natural Science Foundation of Jiangsu Province (BK20200607), and Natural Science Foundation of Shandong Province (ZR2022QE161, ZR2022QE189, ZR2021QE270).
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YH: investigation, visualization, writing–original draft. JS: carrying out measurements; SY: synthesis of V-PVDF; HL: methodology, supervision; HZ: writing—review and editing; ML: resources, formal analysis, funding acquisition; CY: project administration, validation; YW: resources, formal analysis, supervision.
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Hou, Y., Shang, J., Yu, S. et al. Bio-inspired organic–inorganic hybrid superhydrophobic PVDF@SiO2 particles for corrosion protection. J Mater Sci 58, 8061–8075 (2023). https://doi.org/10.1007/s10853-023-08527-y
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DOI: https://doi.org/10.1007/s10853-023-08527-y