The WO ₃ nanorods are prepared via the hydrothermal method in our work. The measured indexes were tested and analyzed meticulously to verify the crystal phase is affected due to its calcinated temperature. Furthermore, the scanning electron microscope (SEM) and the X-ray diffraction (XRD) are used to characterize the different phase WO ₃ . In the light of the results of XRD, the WO ₃ calcined at 400 °C presents hexagonal phase, whereas the WO ₃ annealed at 500 °C and 600 °C exhibits monoclinic. On the basis of SEM, the nanorods are gradually disintegrated with the temperature increase. The monoclinic WO ₃ demonstrated excellent selectivity to ammonia at room temperature. Moreover, it displayed a short response time and fast recovery rate at optimal working temperature.

中文翻译：

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基于单斜 WO3 纳米棒的氨传感器在室温下工作

在我们的工作中，WO ₃纳米棒是通过水热法制备的。对测得的指标进行了细致的测试和分析，以验证晶相因煅烧温度而受到影响。此外，扫描电子显微镜（SEM）和X射线衍射（XRD）用于表征不同相WO ₃ 。根据XRD结果，400℃煅烧的WO ₃呈六方相，而500℃和600℃退火的WO _{3 呈}单斜晶相。在扫描电镜的基础上，纳米棒随着温度的升高逐渐解体。单斜晶WO ₃在室温下对氨表现出优异的选择性。此外，它在最佳工作温度下显示出较短的响应时间和较快的恢复速度。