Self-cleaning antifouling coatings are needed for many applications, motivating the search for low cost coatings with good antifouling and antibacterial properties and minimal impact to the environment. Herein, polyaniline-graphitic carbon nitride (PANI/g-C₃N₄) composites prepared by a simple physical blending method, then added to an acrylic resin to obtain antifouling coating formulations. Under visible light irradiation (λ > 420 nm), the PANI/g-C₃N₄ coatings offered excellent photo-induced anodic antifouling/antibacterial properties, with the optimum weight ratio of PANI:g-C₃N₄ in the coatings determined to be 1:9. Antibacterial experiments demonstrated that the PANI/g-C₃N₄ coatings offered excellent antibacterial activity towards E. coli (96.5 % inhibition efficiency) and S. aureus (95.3 % inhibition efficiency) under visible light. Based on the antifouling experiments and detailed chemical/electrochemical characterization studies, a plausible mechanism for the photo-induced anodic antifouling/antibacterial activity of the composite coatings was proposed.

自清洁防污涂料在许多应用中都是需要的，这促使人们寻求具有良好防污和抗菌性能且对环境的影响最小的低成本涂料。在此，通过简单的物理共混方法制备的聚苯胺-石墨碳氮化物（PANI / gC ₃ N ₄）复合材料，然后添加到丙烯酸树脂中以获得防污涂料配方。在可见光照射下（λ> 420 nm），PANI / gC ₃ N ₄涂层提供了优异的光致阳极防污/抗菌性能，涂层中PANI：gC ₃ N ₄的最佳重量比确定为1： 9。抗菌实验表明，PANI / gC₃ N ₄涂层在可见光下对大肠杆菌（96.5％的抑制效率）和金黄色葡萄球菌（95.3％的抑制效率）具有出色的抗菌活性。基于防污实验和详细的化学/电化学特性研究，提出了复合涂层光诱导阳极防污/抗菌活性的合理机理。