As the flashing hydrogen peroxide (H₂O₂) vapor was used widely in disinfection and sterilization, the monitoring of gas H₂O₂ concentration has become a widespread concern. A gas sensor for hydrogen peroxide monitor was prepared based on the Cu(II) chelating chitosan as catalyst and polyvinyl alcohol/sodium nitrite as a solid polymer electrolyte. The characters and structure of the sensor were characterized by SEM, FTIR, and TG. Finally, the electrochemical performance of the sensor and the detection effect of hydrogen peroxide gas content were detected by an electrochemical workstation. When the concentration of chitosan chelate copper is 0.15 wt% and the concentration of solid electrolyte is 0.1 wt%, the response performance of the sensor is the best. The results show that the low detection limit of the prepared sensor is below 1 ppm, the average response time is 2–5 s, and the usage temperature is relatively stable below 80 ℃. Solid-state electrolyte and electrode are combined by solution permeated, which would reduce the response time, implement consecutive period measurement and simplify the correction step. It would be potentially used for real-time monitoring of H₂O₂ vapor.

由于闪蒸过氧化氢（H ₂ O ₂）蒸气被广泛用于消毒和灭菌，气体H ₂ O ₂的监测集中度已成为广泛关注的问题。基于Cu（II）螯合壳聚糖作为催化剂，聚乙烯醇/亚硝酸钠作为固体聚合物电解质，制备了一种用于过氧化氢监测器的气体传感器。用SEM，FTIR和TG对传感器的特性和结构进行了表征。最后，通过电化学工作站检测传感器的电化学性能和过氧化氢气体含量的检测效果。当壳聚糖螯合铜的浓度为0.15 wt％，固体电解质的浓度为0.1 wt％时，传感器的响应性能最佳。结果表明，所制备传感器的低检测限低于1 ppm，平均响应时间为2–5 s，使用温度在80℃以下相对稳定。固态电解质和电极通过溶液的渗透而结合在一起，这将减少响应时间，执行连续的周期测量并简化校正步骤。它可能会用于H的实时监控₂ O ₂蒸气。