Here, the splitting of water from humidity at the surface of WO₃ is reported. The production of hydrogen occurs under mild conditions at 300 °C in the presence of humidity. Using operando diffuse reflectance infrared Fourier transform spectroscopy and DC resistance measurements complemented with density functional theory calculations, it was possible to elucidate the temperature-dependent surface reactions of WO₃ with humidity. By examining multiple different nanomaterials at 300 °C, it was found that the oxidation of the surface by humidity is generally valid for WO₃. The evolution of hydrogen was detected using catalytic conversion measurements. In addition to the evolution of hydrogen, understanding the interaction between the surface and humidity is a prerequisite for the optimized use of WO₃ for a wide array of applications, such as optical sensors or memristors.

中文翻译：

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WO ₃表面的热水分解：实验证明

在此，报道了WO ₃表面的水分与水分分离。氢气的产生是在温和条件下，在300°C的湿度下进行的。使用操作漫反射红外傅里叶变换光谱和直流电阻测量以及密度泛函理论计算，可以阐明WO ₃与湿度有关的温度依赖性表面反应。通过在300°C下检查多种不同的纳米材料，发现湿气对表面的氧化通常对WO ₃有效。使用催化转化测量来检测氢的逸出。除了释放出氢气以外，了解表面和湿度之间的相互作用是将WO ₃优化用于各种应用（例如光学传感器或忆阻器）的前提。