Ultrathin BaTiO3 nanowires with high aspect ratio: a simple one-step hydrothermal synthesis and their strong microwave absorption.
Ultrathin BaTiO3 nanowires with high aspect ratio: a simple one-step hydrothermal synthesis and their strong microwave absorption.
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DOI：
10.1021/am4014506
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发表时间：
2013-07
影响因子：
9.5
通讯作者：
Jin Yang;Jie Zhang;C. Liang;Min Wang;P. Zhao;Mengmei Liu;Jiwei Liu;R. Che
中科院分区：
文献类型：
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作者：
Jin Yang;Jie Zhang;C. Liang;Min Wang;P. Zhao;Mengmei Liu;Jiwei Liu;R. Che
在本文中，我们报告了通过简单的一步水热处理，以克级产率快速合成超薄钛酸钡（BaTiO3）纳米线。我们的BaTiO3纳米线具有独特的特点：单晶，均匀的尺寸分布和超高的宽高比。奥斯特瓦尔德成熟和阳离子交换反应的协同作用是超薄BaTiO3纳米线生长的主要原因。超薄BaTiO3纳米线的微波吸收能力较BaTiO3纳米环线有所提高，在9.04 GHz时最大反射损耗高达-24.6 dB，吸收带宽为2.4 GHz （<-10 dB）。该方法具有简单、方便、成本低、合成收率高等优点，可用于制备其他铁电纳米结构。超薄BaTiO3纳米线具有较强的微波吸收性能，表明该纳米线在微波吸收和隐身伪装技术方面具有广阔的应用前景。
In this paper, we report the facile synthesis of ultrathin barium titanate (BaTiO3) nanowires with gram-level yield via a simple one-step hydrothermal treatment. Our BaTiO3 nanowires have unique features: single crystalline, uniform size distribution and ultra high aspect ratio. The synergistic effects including both Ostwald ripening and cation exchange reaction are responsible for the growth of the ultrathin BaTiO3 nanowires. The microwave absorption capability of the ultrathin BaTiO3 nanowires is improved compared to that of BaTiO3 nanotorus,1 with a maximum reflection loss as high as -24.6 dB at 9.04 GHz and an absorption bandwidth of 2.4 GHz (<-10 dB). Our method has some novel advantages: simple, facile, low cost and high synthesis yield, which might be developed to prepare other ferroelectric nanostructures. The strong microwave absorption property of the ultrathin BaTiO3 nanowires indicates that these nanowires could be used as promising materials for microwave-absorption and stealth camouflage techniques.