Abstract Homogeneous nanostructures of Nb2O5 were synthesized rapidly using a microwave-assisted hydrothermal method. Niobium plates were used as raw materials without the addition of corrosive HF nor any directing agent. The composition and morphology of the structures were determined by scanning electron microscopy (SEM), X-ray diffraction (XRD), and UV–vis and Raman spectroscopies. The results show that microwave irradiation reduced synthesis time from several days to 2 h. SEM images reveal the formation of structured nanorod arrays at 200 °C. The optical band gap of the nanorods suggests a large-gap semiconducting behavior. These results indicate that the microwave-assisted hydrothermal method is a fast and cheaper technique for the production of homogeneous Nb2O5 nanorod arrays.

中文翻译：

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通过微波辅助水热法快速合成均质 Nb2O5 纳米棒阵列

摘要 使用微波辅助水热法快速合成了 Nb2O5 的均匀纳米结构。铌板用作原材料，不添加腐蚀性 HF 或任何导向剂。通过扫描电子显微镜 (SEM)、X 射线衍射 (XRD)、紫外-可见光谱和拉曼光谱确定结构的组成和形态。结果表明，微波辐射将合成时间从几天缩短到 2 小时。SEM 图像揭示了在 200 °C 下结构化纳米棒阵列的形成。纳米棒的光学带隙表明了大间隙半导体行为。这些结果表明，微波辅助水热法是一种用于生产均质 Nb2O5 纳米棒阵列的快速且廉价的技术。