Rational Design of Transparent Nanowire Architectures with Tunable Geometries for Preventing Marine Fouling
Rational Design of Transparent Nanowire Architectures with Tunable Geometries for Preventing Marine Fouling
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DOI：
10.1002/admi.202000672
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发表时间：
2020-07
影响因子：
5.4
通讯作者：
Jing Wang;Sudarat Lee;Ashley R. Bielinski;K. Meyer;Abhishek Dhyani;Alondra M. Ortiz-Ortiz-Alondra-M.-Ortiz-Ortiz-2005015126;A. Tuteja;N. Dasgupta
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文献类型：
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作者：
Jing Wang;Sudarat Lee;Ashley R. Bielinski;K. Meyer;Abhishek Dhyani;Alondra M. Ortiz-Ortiz-Alondra-M.-Ortiz-Ortiz-2005015126;A. Tuteja;N. Dasgupta
海洋生物污损是阻碍海洋产业发展的全球性难题。受海洋生物物种启发的各种微尺度表面结构已被探索用于其防污性能。然而，通常缺乏对表面结构的抗海洋污染性能的系统研究，其特征长度范围从低于100 nm到大于10 µm。在这里，ZnO/Al 2 O3核壳纳米线结构的合理设计和制造的可调几何形状（长度，间距和分支）和表面化学的研究。纳米线的能力，显着延迟或防止海洋生物污损的证明。与平面表面相比，亲水性纳米线可以在20天后将污垢覆盖率降低高达60%。减垢机理主要是由于两种几何效应：有效沉降面积减小和机械细胞穿透。此外，超疏水纳米线可以完全防止海洋生物污损长达22天。纳米线表面在可见光谱范围内是透明的，这使得它们适用于窗户和海洋传感器。通过对表面纳米结构的合理控制，确定了润湿性、透明度和抗生物污染性能之间的耦合关系。据设想，从工作中获得的见解可以用来系统地设计表面，减少海洋生物污损在各种工业环境。
Marine biofouling is a sticky global problem that hinders maritime industries. Various microscale surface structures inspired by marine biological species have been explored for their anti‐fouling properties. However, systematic studies of anti‐marine‐fouling performance on surface architectures with characteristic length‐scales spanning from below 100 nm to greater than 10 µm are generally lacking. Herein, a study on the rational design and fabrication of ZnO/Al2O3 core–shell nanowire architectures with tunable geometries (length, spacing, and branching) and surface chemistry is presented. The ability of the nanowires to significantly delay or prevent marine biofouling is demonstrated. Compared to planar surfaces, hydrophilic nanowires can reduce fouling coverage by up to ≈60% after 20 days. The fouling reduction mechanism is mainly due to two geometric effects: reduced effective settlement area and mechanical cell penetration. Additionally, superhydrophobic nanowires can completely prevent marine biofouling for up to 22 days. The nanowire surfaces are transparent across the visible spectrum, making them applicable to windows and oceanographic sensors. Through the rational control of surface nano‐architectures, the coupled relationships between wettability, transparency, and anti‐biofouling performance are identified. It is envisioned that the insights gained from the work can be used to systematically design surfaces that reduce marine biofouling in various industrial settings.