In the present work, Lanthanum oxycarbonate (La₂O₂CO₃) nanosheets with network structure were synthesized by a simple precipitation method and their performances as cataluminescence (CTL) sensor for tetrahydrofuran (THF) were investigated. The structure, morphology and chemical states of as-prepared La₂O₂CO₃ were characterized by X-ray diffraction, scanning electron microscopy, transmission electron microscopy and X-ray photoelectron spectroscopy. The sensing conditions include working temperature, detection wavelength and the flow rate of carrier gas were optimized. Under the optimal conditions, the sensor shows high sensitive and selective response to THF. The linear range of CTL intensity versus tetrahydrofuran concentration is 59–870 mg m⁻³ (R² = 0.9933) with a limit of detection of 18 mg m⁻³ (the signal to noise is 3). In order to demonstrate the potential application, the sensor was applied to measure real air samples contain THF, and the obtained results were consistent with those measured by gas chromatography method. The possible sensing mechanism was also discussed based on the reaction product from the catalytic oxidation of THF on La₂O₂CO₃ surface. Compared with the previous CTL sensor for THF, the present senor shows better specificity, and has a lower working temperature. The present work provides a promising method for rapid detection of THF in concerning locations, such as in residential buildings and in the manufacturing plants.

在本工作中，采用简单的沉淀法合成了具有网络结构的碳酸氧镧（La ₂ O ₂ CO ₃）纳米片，并研究了它们作为四氢呋喃（THF）催化发光（CTL）传感器的性能。_{所制备的La 2} O ₂ CO ₃的结构、形貌和化学状态通过X射线衍射、扫描电子显微镜、透射电子显微镜和X射线光电子能谱对其进行了表征。对传感条件包括工作温度、检测波长和载气流速进行了优化。在最佳条件下，传感器对四氢呋喃表现出高灵敏度和选择性响应。CTL 强度与四氢呋喃浓度的线性范围为 59–870 mg m ^-3 ( R ²  = 0.9933)，检测限为 18 mg m ^-3（信噪比为 3）。为展示其潜在应用价值，将该传感器应用于实际空气样品中含有四氢呋喃的测量，所得结果与气相色谱法测量结果一致。_{基于四氢呋喃在La 2} O ₂ CO ₃表面催化氧化的反应产物，还讨论了可能的传感机制。与以往的四氢呋喃CTL传感器相比，本传感器具有更好的特异性，工作温度更低。目前的工作为在相关位置（例如住宅建筑和制造工厂）中快速检测 THF 提供了一种有前景的方法。