Key Laboratory of Marine Materials and Related Technologies, Zhejiang Key Laboratory of Marine Materials and Protective Technologies, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China; Nano Science and Technology Institute, University of Science and Technology of China, Suzhou 215123, China.
Key Laboratory of Marine Materials and Related Technologies, Zhejiang Key Laboratory of Marine Materials and Protective Technologies, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China; University of Chinese Academy of Sciences, 19 A Yuquan Rd, Shijingshan District, Beijing 100049, China.
Colloids Surf B Biointerfaces. 2021 Jan;197:111375. doi: 10.1016/j.colsurfb.2020.111375. Epub 2020 Sep 28.
Titanium alloys, recognized as a marine material with great potential, are currently facing serious biofouling problems, which greatly limits its application range. To improve the antifouling performance of titanium alloys, three unique surface of three-dimensional network, grass-like and linear nanostructures were obtained on titanium alloys via hydrothermal treatment in this work. Further, slippery liquid-infused porous surfaces (SLIPSs) were fabricated on titanium alloys via infusing PFPE lubricant into these nanostructures. Water contact angles and sliding angles of SLIPSs were measured to evaluate the effect of nanostructures on the stability of PFPE lubricant layer. Anti-fouling capability of SLIPSs were investigated by quantifying the cells of chlorella and phaeodactylum tricornutum (P. tricornutum)adhered to titanium alloys. The results shows that all the SLIPSs exhibited remarkable inhibition capacity for the settlement of chlorella and P. tricornutum. Among them, the SLIPS with three-dimensional network nanostructure displayed the longest-term anti-fouling performance, and its reduction rate of P. tricornutum and chlorella reaching 77.2 % and 84.5 % after being cultivated for 21 days, respectively, indicating that there existed a positive correlation between the stability of lubricant layer in the artificial seawater and the antifouling effect.
钛合金作为一种极具潜力的海洋材料，目前面临着严重的生物污损问题，这极大地限制了其应用范围。为了提高钛合金的防污性能，本工作通过水热处理在钛合金表面获得了具有三维网络、草状和线性纳米结构的独特表面。进一步地，通过将 PFPE 润滑剂注入这些纳米结构，在钛合金上制备了滑液注入多孔表面（SLIPSs）。通过测量 SLIPSs 的水接触角和滑动角来评估纳米结构对 PFPE 润滑剂层稳定性的影响。通过量化附着在钛合金上的小球藻和三角褐指藻（P. tricornutum）的细胞来研究 SLIPSs 的抗污能力。结果表明，所有 SLIPSs 均表现出对小球藻和 P. tricornutum 附着的显著抑制能力。其中，具有三维网络纳米结构的 SLIPS 表现出最长的防污性能，在培养 21 天后，对三角褐指藻和小球藻的去除率分别达到 77.2%和 84.5%，表明人工海水中润滑剂层的稳定性与防污效果之间存在正相关关系。
