A novel strategy for the removal of sulfur mustard surrogate (2-chloroethyl ethyl sulfide, 2-CEES) by pulsed-driven cold plasma jet was proposed in this work. The effects of pulse frequency and pulse width values were varied to optimize the degradation fraction. A high degradation fraction was obtained using a high pulse frequency or a short pulse width. Under optimal conditions, the degradation fraction reached 100% after 3 min of plasma treatment, corresponding to a degradation rate of 3.34 µg/min and energy efficiency of 0.4 µg/W, respectively. The degradation products include 2-chloroethyl ethyl sulfoxide (2-CEESO) and 2-chloroethyl ethyl sulfone (2- CEESO₂), these liquid products further turned into gas products (H₂S, HCl, or CO₂) after plasma treatment time of 15 min. Further analysis proved that short-lived excited species such as OH, O, and NO_x and long-lived reactive species (mainly O₃) play an important role in 2-CEES oxidation and mineralization. The results of this work shed light on the portable design of cold plasma jet for the detoxification of chemical warfare agents (CWAs), which is a clean and energy-saving technique for the removal of CWAs.

在这项工作中提出了一种通过脉冲驱动冷等离子体射流去除硫芥替代物（2-氯乙基乙基硫醚，2-CEES）的新策略。改变脉冲频率和脉冲宽度值的影响以优化退化分数。使用高脉冲频率或短脉冲宽度获得高退化分数。在最佳条件下，等离子体处理 3 分钟后降解率达到 100%，分别对应于 3.34 µg/min 的降解速率和 0.4 µg/W 的能量效率。降解产物包括2-氯乙基乙基亚砜（2-CEESO）和2-氯乙基乙基砜（2-CEESO ₂），这些液体产物进一步转化为气体产物（H ₂ S、HCl或CO ₂) 等离子处理时间为 15 分钟。进一步的分析证明，短寿命的激发态物质如 OH、O 和 NO _x和长寿命的活性物质（主要是 O ₃）在 2-CEES 氧化和矿化中起重要作用。这项工作的结果阐明了用于化学战剂 (CWA) 解毒的冷等离子射流的便携式设计，这是一种去除 CWA 的清洁节能技术。