采用水热法和退火相结合的方法制备了β-Ba B2O4纳米束,并采用X射线衍射、热重分析、扫描和透射电子显微镜对纳米束进行表征。结果表明,单晶纳米线的直径约为30 nm,长约为450 nm。对影响产物形貌的因素的研究表明,退火温度和反应时间对产物形貌的影响极大。产物的室温荧光光谱是从310 nm到450 nm的宽带发光,峰值位于370 nm。这种新型纳米束结构在光学方面具有潜在的应用价值。 The β-Ba B2O4 nanobeam was prepared by a combination of hydrothermal method and annealing. The nanobeam was characterized by X-ray diffraction, thermogravimetric analysis, scanning and transmission electron microscopy. The results show that the diameter of monocrystalline nanowires is about 30 nm and the length is about 450 nm. The study of the factors affecting the morphology of the product showed that annealing temperature and reaction time greatly affected the morphology of the product. The room temperature fluorescence spectrum of the product is broadband from 310 nm to 450 nm with a peak at 370 nm. This new type of nano-beam structure has potential applications in optics.