Abstract Based on the porous structure of activated carbon (AC) and the photo-oxidation behavior of TiO2, a visible-light-responsive photocatalytic coating with UV stability was constructed by loading Fe/N/Co-TiO2@AC (DTC) on waterborne acrylic coating. The DTC with adsorption and degradation synergistic effect was prepared by a simple mechanochemistry method and characterized by UV–vis, SEM, XRD, and BET. The nitric oxide (NO) removal efficiency of DTC was 51.6 % under visible light in 2 h. Besides, under the same conditions, the NO removal efficiency of the DTC coating still reached 45.8 %. Further, to investigate the UV stability of DTC coating, different coatings were prepared with the same dosage of DTC, TiO2@AC (TC), and TiO2. The UV stability of the coatings was tested with a color difference, degree of chalking, adhesion strength, hardness, and impact resistance as evaluation indicators. The results showed that the DTC coating exhibited the best UV stability. The photooxidation of organic binder on the coating surface before and after aging was micro-characterized by SEM and FT-IR, and the UV stability improvement mechanism was revealed.

中文翻译：

---

掺杂TiO2/AC涂层的光催化性能及其紫外稳定性研究

摘要 基于活性炭 (AC) 的多孔结构和 TiO2 的光氧化行为，通过负载 Fe/N/Co-TiO2@AC (DTC) 构建了具有紫外稳定性的可见光响应光催化涂层。丙烯酸涂层。通过简单的机械化学方法制备了具有吸附和降解协同作用的 DTC，并通过 UV-vis、SEM、XRD 和 BET 进行了表征。DTC在可见光下2h去除一氧化氮(NO)的效率为51.6%。此外，在相同条件下，DTC涂层的NO去除效率仍达到45.8%。此外，为了研究 DTC 涂层的紫外线稳定性，使用相同剂量的 DTC、TiO2@AC (TC) 和 TiO2 制备不同的涂层。通过色差、粉化程度、附着强度、硬度、和抗冲击性作为评价指标。结果表明，DTC涂层表现出最好的紫外线稳定性。SEM和FT-IR对老化前后涂层表面有机粘合剂的光氧化进行了微观表征，揭示了紫外稳定性提高机制。