J Biomed Nanotechnol. 2020 Oct 1;16(10):1530-1541. doi: 10.1166/jbn.2020.2980.
Marine structures often suffer from biofouling, which may lead to macrofouling by marine animals like marine worms and barnacles, weighing down the structures and increasing the drag. This paper analyses the effect of the newly fabricated biological anti-adhesion Titania-Polyurea spray coating, which can effectively reduce biofouling from enriching on the surface. Through the surface characterization, bioassays and micro-channel drag-reduction test, the antibacterial effect caused by the nano-titanium dioxide is systematically studied. Compared to the different weight percentages of nano-TiO₂ in the coating system, the photocatalytic activity, riblet surface structure and hydrophobic wettability are supposed to be the key factors to reduce the flow resistance at a drag reduction rate of 3.0% and further enhance the anti-biofouling performance under dark conditions.
海洋结构物经常受到生物污垢的影响，这可能导致海洋动物（如海洋蠕虫和藤壶）的大型污垢，使结构物重量增加，阻力增大。本文分析了新制备的生物抗粘连二氧化钛-聚脲喷涂涂层的效果，该涂层可以有效地减少表面上生物污垢的富集。通过表面特性分析、生物实验和微通道减阻测试，系统研究了纳米二氧化钛产生的抗菌效果。与涂层系统中不同重量百分比的纳米 TiO₂ 相比，光催化活性、肋表面结构和疏水性润湿性可能是降低 3.0%减阻率下流动阻力并进一步增强黑暗条件下抗生物污垢性能的关键因素。
