J. Mater. Sci. Technol. ›› 2025, Vol. 221: 1-10.DOI: 10.1016/j.jmst.2024.09.034

• Research Article •     Next Articles

NIR-light-induced plasmonic liquid metal/ionic liquid/MXene polyurethane films with excellent antifouling and self-healing capabilities

Peng Wanga, Haohang Yuana, Baoluo Hea, Ruisheng Guoa, Shujuan Liua, *, Qian Yea,*, Feng Zhoua,b, Weimin Liua,b   

  1. aState Key Laboratory of Solidification Processing, Center of Advanced Lubrication and Seal Materials, School of Materials Science and Engineering, Northwestern Polytechnical University, Xi'an 710072, China;
    bState Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China
  • Received:2024-07-02 Revised:2024-09-07 Accepted:2024-09-28 Published:2024-10-16 Online:2024-10-16
  • Contact: *E-mail addresses: liusj@nwpu.edu.cn (S. Liu), yeqian213@nwpu.edu.cn (Q. Ye)

Abstract: The potential of organic coatings in antifouling applications has been well-documented. Beyond their exceptional antifouling effects, these coatings should also possess good mechanical strength and self-healing capabilities. Herein, a novel vinyl-based ionic liquid [VEMIM+] [Cl-] (IL) was in situ polymerized and then assembled onto the surface of liquid metal (GLM) nanodroplets to prepare GLM-IL. Subsequently, Ti3C2Tx (MXene) was modified with GLM-IL nanodroplets to obtain GLM-IL/MXene composite, which acts as an efficient photon captor and photothermal converters and can be further composited with PU film (GLM-IL/MXene/PU). Notably, the composite film significantly increases by ∼117 °C after exposure to 200 mW/cm2 light irradiation. This increase is attributed to the high photothermal conversion efficiency of MXene and the excellent plasma effect of GLM-IL. Compared with pure PU, the GLM-IL/MXene/PU film shows a 50 % improvement in tensile strength and above 85.8 % healing efficiency with a local temperature increase. Additionally, the as-prepared GLM-IL/MXene/PU film reveals satisfactory antifouling properties, achieving a 99.7 % reduction in bacterial presence and an 80.3 % reduction in microalgae. This work introduces a novel coating with antifouling and self-healing properties, offering a wide range of applications in the fields of marine antifouling and biomedicine.

Key words: Ionic liquid, Mxene, Gallium-based liquid metal, Antifouling, Self-healing