In this work, the influence of Graphene oxide (GO) on the sensing performance of Polyaniline (PANI) toward NH₃ and CO gases at room temperature (RT) was comprehensively studied. The PANI/GO nanocomposite was synthesized by the “in-situ chemical oxidation polymerization” route in the presence of GO. The optical, spectroscopic and structural properties of as-prepared materials were studied through UV–vis, FTIR, RAMAN spectroscopies and XRD. Additionally, the topological investigations of materials were carried out by Atomic Force Microscopy (AFM). The sensors were fabricated via drop-casting of the pure PANI and PANI/GO nanocomposite on a low-cost pattern of Cu interdigitated electrodes (IDE). The sensors based on the PANI/GO nanocomposite exhibited a better-sensing performance for NH₃ than those of bare PANI. The present finding indicates that the PANI/GO-based sensor exhibits high response (9.6%–70 ppm), fast recovery time (23 s), low detection limit (30 ppm) and linear dynamic range (30–230 ppm) with excellent repeatability, reproducibility, long-term stability and exceptional selectivity for NH₃ sensing. Thus, the PANI/GO-based sensor has a high potential for high-performance sensing applications.

本工作全面研究了氧化石墨烯（GO）对聚苯胺（PANI）在室温（RT）下对NH _{3和CO气体的传感性能的影响。}PANI/GO纳米复合材料是在GO存在下通过“原位化学氧化聚合”路线合成的。通过紫外-可见、FTIR、拉曼光谱和XRD研究了所制备材料的光学、光谱和结构特性。此外，材料的拓扑研究是通过原子力显微镜（AFM）进行的。这些传感器是通过将纯 PANI 和 PANI/GO 纳米复合材料滴铸在低成本的铜叉指电极 (IDE) 上而制造的。基于 PANI/GO 纳米复合材料的传感器对 NH 表现出更好的传感性能₃比那些裸 PANI。目前的研究结果表明，基于 PANI/GO 的传感器具有高响应 (9.6%–70 ppm)、快速恢复时间 (23 s)、低检测限 (30 ppm) 和线性动态范围 (30–230 ppm)，具有出色的NH ₃传感的可重复性、再现性、长期稳定性和出色的选择性。因此，基于 PANI/GO 的传感器在高性能传感应用方面具有很高的潜力。