首页|Fluorine-free,robust and self-healing superhydrophobic surfaces with anticorrosion and antibacterial performances

Fluorine-free,robust and self-healing superhydrophobic surfaces with anticorrosion and antibacterial performances

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Superhydrophobic surfaces with water-repelling ability have important applications,such as self-cleaning,antibacterial and corrosion protection.However,the using of harmful fluorinated materials and its poor mechanochemical stability limit its practical application.Herein,a fluorine-free,robust and self-healing superhydrophobic surface is prepared through a two-step method of laser processing and spraying coat-ing for anticorrosion and antibacterial applications.Laser processing is used to construct periodic micron-sized pillars for obtaining strong interface bonding between coating and substrate by mechanical inter-locking effect,and as an'armor',preventing the removal of the coating.The coating consists of epoxy resin(EP),hexadecyltrimethoxysilane(HDTMS)and γ-aminopropyltriethoxysilane treated Cu2O(KH550-Cu2O).The superhydrophobic surface can withstand various mechanical durability tests,such as multiple sandpaper abrasion and tape peeling cycles.It exhibits excellent corrosion inhibition efficiency(ηp＞99％)on Mg alloy,Tinplate and Al alloy,which results from superhydrophobicity and organic coating.The superhydrophobicity endows surface with excellent antibacterial adhesion performance in a static liquid environment.The bactericidal activity of KH550-Cu2O can effectively inactivate the bacteria in contact with the surface and the free bacteria,providing excellent antibacterial ability in a dynamic liquid envi-ronment.It still exhibits good anticorrosion and antibacterial abilities after multiple mechanical abrasion cycles due to the outstanding mechanical durability.Moreover,it exhibits outstanding self-healing ability to plasma etching and oil contamination,self-cleaning ability under air and oil conditions,and chemical stability against acids and alkalis solution.All the above excellent performances promote its application in a wider range of fields.

SuperhydrophobicitySelf-healingDurability and stabilityAntibacterial adhesion and bactericidal activityAnticorrosion

Wenliang Zhang、Shuyi Li、Dongsong Wei、Zaihang Zheng、Zhiwu Han、Yan Liu

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Key Laboratory of Bionic Engineering(Ministry of Education),Jilin University,Changchun,130022,China

School of Chemical Engineering,Changchun University of Technology,Changchun,130012,China

Weihai Institute for Bionics-Jilin University,Weihai,264402,China

National Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaFoundation for Innovative Research Groups of the National Natural Science Foundation of ChinaScience and Technology Development Project of Jilin ProvinceScience and Technology Development Project of Jilin ProvinceJLU Science and Technology Innovative Research TeamChina Postdoctoral Science Foundation

U2106226U22A0183521052975202100320210203022SF20210508029RQ2020TD-032022TQ0117

2024

10.1016/j.jmst.2023.10.059

材料科学技术(英文版)
中国金属学会 中国材料研究学会 中国科学院金属研究所

材料科学技术(英文版)

CSTPCD
影响因子：0.657
ISSN：1005-0302
年,卷(期)：2024.186(19)
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