Abstract In this paper, single-crystalline MnWO 4 nanorods were prepared through a facile single-step hydrothermal approach and used for gas sensing. The morphology and phase of the products were characterized in detail through transmission electron microscopy, high-resolution transmission electron microscopy, X-ray diffraction, and elemental dispersive spectrum analyses. Results showed that the as-prepared MnWO 4 nanorods possess uniform shape with their length of 250–300 nm and width of 20–30 nm. The nanorods were used to fabricate sensors for detecting reducing gases such as NH 3 , H 2 and CO and evaluate gas sensing properties. The sensors exhibit not only good response and fast response time, but also almost full recovery and good stability, to NH 3 gas.

中文翻译：

---

用于高选择性 NH 3 气体传感器的钨酸锰纳米棒的可控合成

摘要 本文通过简单的单步水热法制备了单晶MnWO 4 纳米棒，用于气体传感。通过透射电子显微镜、高分辨率透射电子显微镜、X 射线衍射和元素色散谱分析对产物的形貌和相进行了详细表征。结果表明，所制备的 MnWO 4 纳米棒具有均匀的形状，长度为 250-300 nm，宽度为 20-30 nm。纳米棒用于制造传感器，用于检测还原性气体（如 NH 3 、H 2 和 CO）并评估气体传感特性。该传感器不仅表现出良好的响应和快速的响应时间，而且对NH 3 气体表现出几乎完全恢复和良好的稳定性。