Indium trioxide (In₂O₃) nanoparticles prepared using a solvothermal reaction were coated on the surface of graphene nanoribbon (GNR) to serve as a core for the manufacture of polyaniline (PANI)/In₂O₃/GNR ternary nanocomposites produced using in situ chemical oxidative polymerization. The gas-sensing properties of nanocomposites were evaluated by a homemade dynamic test system at room temperature, which was equipped with a real-time resistance acquisition platform. The response value of the PANI/In₂O₃/GNR sensor with the loading of 3 wt% In₂O₃ nanoparticles and an exposure of 4 ppm NH₃ was 27.1, which was about 3 or more times higher than that of PANI sensor. This sensor was shown to be very sensitive to the detection of NH₃ in the concentration range of 0.65–1.69 ppm at room temperature, which is critical in the detection of hepatic or kidney disease in the human breath. The PANI/In₂O₃/GNR sensor also revealed higher selectivity and repeatability when exposed to 0.65 ppm NH₃ at room temperature. Because of the excellent selectivity and repeatability in the detection of 0.65 ppm NH₃ at room temperature obtained in this report, it is believed that the PANI/In₂O₃/GNR nanocomposites sensor will be a promising gas-sensing material for the detection of hepatic or kidney disease in human breath.

使用溶剂热反应制备的三氧化铟（In ₂ O ₃）纳米颗粒被涂覆在石墨烯纳米带（GNR）的表面上，用作制造聚苯胺（PANI）/ In ₂ O ₃ / GNR三元纳米复合材料的核心。原位化学氧化聚合。纳米复合材料的气敏特性通过室温下的自制动态测试系统进行评估，该系统配备了实时电阻采集平台。PANI / In ₂ O ₃ / GNR传感器在负载3 wt％In ₂ O ₃纳米颗粒和暴露4 ppm NH _3时的响应值为27.1，比PANI传感器高约3倍或更多。该传感器对室温下浓度范围为0.65-1.69 ppm的NH ₃的检测非常敏感，这对于检测人类呼吸中的肝脏或肾脏疾病至关重要。当在室温下暴露于0.65 ppm NH ₃时，PANI / In ₂ O ₃ / GNR传感器也显示出更高的选择性和可重复性。由于本报告中获得的在室温下检测0.65 ppm NH ₃的优异选择性和可重复性，可以认为PANI / In ₂ O ₃/ GNR纳米复合材料传感器将是一种有前途的气体传感材料，可用于检测人类呼吸中的肝脏或肾脏疾病。