This work demonstrates the fabrication of a highly selective ammonia (NH₃) gas sensor based on Graphene/Silver–Silver Oxide/Polypyyrole (Gr/Ag–Ag₂O/PPy) nanocomposite. To archive this objective, a cost-effective, room temperature mediated solution-based synthesis of Gr/Ag–Ag₂O/PPy nanocomposite was exploited as an efficient performance NH₃ gas sensor through combining the exceptional electrical characteristics of Graphene and sensing abilities of Ag–Ag₂O/PPy. The as-synthesized nanomaterials were examined for relative DC conductivity with ammonia vapors' exposure at room temperature (25 °C) with the electrical signals' changes. The incorporation of Gr/Ag–Ag₂O in PPy revealed about 40 times higher amplitude of conductivity change as compared to pristine PPy on exposure to the ammonia vapors. The reversibility response of Gr/Ag–Ag₂O/PPy regarding the DC electrical conductivity with an effective variation range from 9.15 S/cm to 6.48 S/cm was observed in the ambient air on exposure to 1000 ppm of ammonia vapors. Gr/Ag–Ag₂O/PPy was shown to offer a more excellent selectivity toward ammonia due to its basicity compared to different volatile organic compounds.

这项工作演示了基于石墨烯/银-氧化银/聚吡咯（Gr / Ag-Ag ₂ O / PPy）纳米复合材料的高选择性氨（NH ₃）气体传感器的制造。为了实现这一目标，通过结合石墨烯的出色电学特性和传感器的感应能力，开发了一种经济高效的室温介导的基于溶液的Gr / Ag-Ag ₂ O / PPy纳米复合材料合成方法，作为一种高效能的NH ₃气体传感器。 Ag–Ag ₂ O / PPy。在室温（25°C）下，随着电信号的变化，对合成后的纳米材料的相对直流电导率进行了检测，同时氨气暴露在其中。Gr / Ag–Ag ₂的掺入与原始PPy接触氨气后，PPy中的O显示出电导率变化幅度是原始PPy的约40倍。在暴露于1000 ppm氨蒸汽的环境空气中，观察到了Gr / Ag–Ag ₂ O / PPy关于直流电导率的可逆性响应，其有效变化范围为9.15 S / cm至6.48 S / cm。与不同的挥发性有机化合物相比，由于其碱性，Gr / Ag-Ag ₂ O / PPy具有更好的氨选择性。