The zinc oxide (ZnO) nanoparticles (NPs) sensors were prepared in-situ on the gas-sensing electrodes by a one-step simple sol-gel method for the detection of hydrogen sulfide (H₂S) gas. The sphere-like ZnO NPs were characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), x-ray diffraction (XRD), energy dispersive x-ray analysis (EDX), and their H₂S sensing performance were measured at room temperature. Testing results indicate that the ZnO NPs exhibit excellent response to H₂S gas at room temperature. The response value of the optimal sample to 750 ppb H₂S is 73.3%, the detection limit reaches to 30 ppb, and the response value is 7.5%. Furthermore, the effects of the calcining time and thickness of the film on the gas-sensing performance were investigated. Both calcining time and film thickness show a negative correlation with the H₂S sensing performance. The corresponding reaction mechanism of H₂S detection was also discussed.

通过一步简单的溶胶-凝胶法在气敏电极上原位制备氧化锌（ZnO）纳米颗粒（NPs）传感器，用于检测硫化氢（H ₂ S）气体。采用扫描电子显微镜（SEM）、透射电子显微镜（TEM）、X射线衍射（XRD）、能量色散X射线分析（EDX）对球形ZnO纳米颗粒进行表征，并测量其H ₂ S传感性能在室温下。测试结果表明，ZnO NPs在室温下对 H _{2 S 气体表现出优异的响应。}最佳样品对 750 ppb H _{2的响应值}S为73.3%，检出限达到30 ppb，响应值为7.5%。此外，还研究了煅烧时间和薄膜厚度对气敏性能的影响。_{煅烧时间和薄膜厚度均与H 2} S 传感性能呈负相关。还讨论了H ₂ S检测的相应反应机理。