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β-BaB2O4纳米线束的制备与荧光性能
作者:唐春娟1 刘利娜1 苏剑峰1 肖宏宇1 张永胜1 李广海2 
单位:1. 洛阳理工学院数理部 河南 洛阳 471023  2. 中国科学院合肥物质科学院固体物理研究所 安徽省纳米材料与技术重点实验室 合肥230031 
关键词:偏硼酸钡 纳米线束 水热法  退火 荧光 
分类号:O469
出版年,卷(期):页码:2015,43(1):70-75
DOI:10.14062/j.issn.0454-5648.2015.01.11
摘要:

 采用水热法和退火相结合的方法制备了β-BaB2O4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。

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 β-BaB2O4 nanowire bundles were synthesized via a facile hydrothermal method and subsequent post-annealing. The nanowire bundles synthesized were characterized by X-ray diffraction, scanning electron microscopy and transmission electron microscopy, respectively. The nanowires are of single crystalline with the diameter of about 30 nm and the length of about 450 nm. The factors affecting the morphologies of the β-BaB2O4 nanowire bundles were investigated. The results show that the heating temperature and the reaction time have major effects on the morphology evolution of the nanowire bundles. The photoluminescence spectra of the sample show a broad emission band in a wide wavelength range of 310?450 nm. The peak centered at 370 nm in the near UV region appears due to the direct transitions involving the valence band and conduction band in the band gap region. The nanowire bundles have a promising application in optics.

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基金项目:
基金项目:国家自然科学基金(51002070)项目;河南省青年骨干教师项目(2013GGJS-189);河南省自然科学基金(1413140009)项目。
作者简介:
第一作者:唐春娟(1978—),女,博士,副教授。
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参考文献:

 参考文献:

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