A novel multistage strategy for non-toxic anti-biofouling coatings by combining antifouling photocatalytic doped TiO2 nanostructured films with fouling release slippery liquid-infused porous surfaces (SLIPS) approaches.

通过将防污光催化掺杂 TiO2 纳米结构薄膜与污垢释放滑液注入多孔表面 (SLIPS) 方法相结合，实现无毒防生物污损涂层的新型多级策略。

• 批准号: 442826449
• 负责人: Professor Dr. Ben Fabry
• 金额: --
• 依托单位: Department Werkstoffwissenschaften
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2020
• 资助国家: 德国
• 起止时间: 2019-12-31 至 2022-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/442826449?language=en
• 关键词: novel; multistage; strategy; non; toxic

The undesirable accumulation of biological matter on surfaces is a serious problem affecting a wide range of industries of our society. Biofilms in pipelines and heat exchangers provoke biocorrosion leading to equipment failure, biomedical devices, and food facilities suffer from an accumulation of harmful bacteria triggering the spread of infectious diseases and even human mortality, fouling of marine species in the shipping industry increases fuel consumption causing unnecessary CO2/SO2 emissions. Biofilms are often treated with antibiotics; but, the development of multiple drug resistance and adverse side effects are major drawbacks for conventional antimicrobial agents. Thus, novel approaches are required to prevent biofouling. Inspired by nature, omniphobic slippery liquid-infused porous surfaces (SLIPS) effectively repel various liquids and microorganisms. However, they suffer significantly from lubricant depletion finally leading to biofouling attachment. In this study, we will develop a novel composite multifunctional coating consisting of anti-fouling photocatalytic in the UV/Vis spectral range TiO2/WO3 nanostructures combined with a fouling-release SLIPS approach to compensate lubricant depletion and substantially extend anti-biofouling performance. We will elaborate and apply laboratory-based bio-assays to study and characterize the multilevel adhesion of organic molecules, bacteria and marine alga to the designed surfaces dependent on the photocatalytic activity of the substrate, the infused lubricant, and synergy between them to investigate their antifouling performance. The specific objective of this research is an advanced understanding of the design factors that are important for the antifouling performance of the combined surfaces for their further implementation in real-life applications. We expect a high impact of this project on the scientific community, the private sector, and the society in general.

生物物质在表面上的不期望的积累是影响我们社会的广泛行业的严重问题。管道和热交换器中的生物膜引起生物腐蚀，导致设备故障，生物医学设备和食品设施遭受有害细菌的积累，引发传染病的传播甚至人类死亡，航运业中海洋物种的污染增加了燃料消耗，造成不必要的CO2/SO2排放。生物膜通常用抗生素处理;但是，多重耐药性和不良副作用的发展是常规抗微生物剂的主要缺点。因此，需要新的方法来防止生物结垢。受大自然的启发，全憎性光滑液体注入多孔表面（SLIPS）有效地排斥各种液体和微生物。然而，它们显著地遭受润滑剂耗尽，最终导致生物污垢附着。在这项研究中，我们将开发一种新型的复合多功能涂料组成的防污光催化在UV/维斯光谱范围TiO 2/WO 3纳米结构结合污垢释放SLIPS方法，以补偿润滑油消耗和大大延长抗生物污损性能。我们将阐述和应用基于实验室的生物测定来研究和表征有机分子，细菌和海洋微生物对设计表面的多层次粘附，这取决于基质的光催化活性，注入的润滑剂，以及它们之间的协同作用，以研究它们的光催化性能。本研究的具体目标是先进的设计因素的理解，是重要的组合表面的抗反射性能，为他们在现实生活中的应用进一步实施。我们期望这个项目对科学界、私营部门和整个社会产生重大影响。