The application of ultraviolet (UV) light for the decontamination of chemical warfare agents (CWAs) has gained recognition as an effective method, especially for treating hard‐to‐reach areas where wet chemical methods are impractical. In this study, TiO2/Ti was employed as a model catalyst, which was contaminated with 2‐chloroethyl phenyl sulfide (CEPS), and subjected to photocatalytic decontamination using both UVB and UVC light. Additionally, photocatalytic decontamination efficiency by introducing Au, Pt, and Cu onto the TiO2/Ti surface was explored. During the photodecomposition process under UVC light, at least eight distinct secondary byproducts were identified. It was observed that the introduction of overlayer metals did not significantly enhance the photodecomposition under UVC light instead overlaid Au exhibited substantially improved activity under UVB light. Whereas, photodecomposition process under UVB light, only five secondary products were detected, including novel compounds with sulfoxide and sulfone functional groups. This novel study offers valuable insights into the generation of secondary products and sheds light on the roles of overlayer metals and photon wavelength in the photodecontamination process of CWA.

中文翻译：

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金属负载 TiO2/Ti 表面化学战剂模拟物 2-氯乙基苯硫醚的紫外光辅助净化

应用紫外线 (UV) 净化化学战剂 (CWA) 已被认为是一种有效的方法，特别是对于处理湿化学方法无法到达的难以到达的区域。在本研究中，TiO2/Ti 被用作模型催化剂，其被 2-氯乙基苯硫醚 (CEPS) 污染，并使用 UVB 和 UVC 光进行光催化去污。此外，通过在 TiO 上引入 Au、Pt 和 Cu 来提高光催化净化效率2探索了 /Ti 表面。在 UVC 光下的光分解过程中，至少鉴定出八种不同的次级副产物。据观察，覆盖层金属的引入并没有显着增强 UVC 光下的光分解，相反，覆盖层 Au 在 UVB 光下表现出显着改善的活性。而在UVB光下的光分解过程中，仅检测到五种副产物，其中包括具有亚砜和砜官能团的新型化合物。这项新颖的研究为二次产物的生成提供了宝贵的见解，并揭示了覆盖层金属和光子波长在 CWA 光净化过程中的作用。