As one of the important sources of pollution-free clean energy, hydrogen has attracted great attention. However, hydrogen molecules are very small and prone to leakage during production, transmission and usage. Therefore, it has become a trend to design room temperature hydrogen sensor. In this work, a novel InO/SnS sensitive material was synthesized by hydrothermal method. The morphology and chemical composition of the samples were characterized, and the gas sensing properties of the samples were analyzed. Furthermore, a series of sensors were tested to evaluate gas sensor performance. Among the as-synthesized sensors, the IS-5-based sensor yielded a response signal of 339% for 1000 ppm H at 27 °C, which is 2.6 times higher than that achieved for the SnS-based sensor (1.304–1000 ppm H, 27 °C). The IS-5-based sensor exhibited specific selectivity for H (compare to methane, methanol, ethanol, propane and CO). The sensor based on InO/SnS (IS-5) shows favorable response performance to H. The improvement of gas sensing performance may be related to its special morphology and InO/SnS (IS-5) heterojunction. In general, the sensor based on InO/SnS(IS-5) has low operating temperature and excellent selectivity to H.

中文翻译：

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花状In2O3/SnS2纳米复合材料的制备及其室温氢传感性能

氢作为无污染清洁能源的重要来源之一，备受关注。然而，氢分子非常小，在生产、运输和使用过程中容易发生泄漏。因此，设计室温氢传感器已成为一种趋势。本工作采用水热法合成了一种新型的InO/SnS敏感材料。对样品的形貌和化学成分进行了表征，并分析了样品的气敏性能。此外，还测试了一系列传感器以评估气体传感器的性能。在合成的传感器中，基于 IS-5 的传感器在 27 °C 下对 1000 ppm H 产生了 339% 的响应信号，比基于 SnS 的传感器（1.304–1000 ppm H）高出 2.6 倍。 ，27°C）。基于 IS-5 的传感器表现出对 H 的特定选择性（与甲烷、甲醇、乙醇、丙烷和 CO 相比）。基于InO/SnS（IS-5）的传感器对H表现出良好的响应性能。气敏性能的提高可能与其特殊的形貌和InO/SnS（IS-5）异质结有关。总的来说，基于InO/SnS(IS-5)的传感器具有较低的工作温度和优异的H选择性。