Abstract In this study, porous In2O3 nanorods were fabricated by a simple low-cost hydrothermal method, followed by heat treatment, for use as an effective CO gas sensor. Material characterization by some advanced techniques demonstrated that high quality In2O3 nanorods, of about 10 nm in diameter and 40 nm in length, were obtained. The In2O3 nanorods had a porous structure composed of many nanopores of about 1.9 nm in size. The sensor based on the porous In2O3 nanorods was fabricated using a drop-coating technique. The sensor showed the best gas sensing performance at a working temperature of 350°C with a response value of about 3.5 for 400 ppm CO. The selectivity and stability of the sensor were also studied, and the results showed that the device had excellent stability and a high selective capability to detect CO over H2, NH3, toluene, ethanol, acetone, isopropyl alcohol, CO2 and CH4 gases.

中文翻译：

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用于有效 CO 气体传感器的水热法制备的多孔 In2O3 纳米棒

摘要 在这项研究中，多孔 In2O3 纳米棒通过简单的低成本水热法制备，然后进行热处理，用作有效的 CO 气体传感器。一些先进技术的材料表征表明，获得了直径约 10 nm 和长度约 40 nm 的高质量 In2O3 纳米棒。In2O3 纳米棒具有多孔结构，由许多大小约为 1.9 nm 的纳米孔组成。使用滴涂技术制造基于多孔 In2O3 纳米棒的传感器。该传感器在 350°C 的工作温度下表现出最佳的气敏性能，对 400 ppm CO 的响应值约为 3.5。 还对传感器的选择性和稳定性进行了研究，结果表明该器件具有优异的稳定性和稳定性。在 H2、NH3、甲苯、乙醇、