Co(OH)3 nanobelts: synthesis, characterization and shape-preserved transformation to pseudo-single-crystalline Co3O4 nanobelts
Co(OH)3 nanobelts: synthesis, characterization and shape-preserved transformation to pseudo-single-crystalline Co3O4 nanobelts
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DOI：
10.1088/0957-4484/21/4/045605
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发表时间：
2010-01
期刊：
影响因子：
3.5
通讯作者：
Jinhu Yang;H. Hyodo;K. Kimura;Takehiko Sasaki
中科院分区：
文献类型：
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作者：
Jinhu Yang;H. Hyodo;K. Kimura;Takehiko Sasaki
在本文中，我们展示了一种简便的水热路线，可产生新型氢氧化钴 Co(OH)3 纳米带。这种Co(OH)3纳米带新产品通过SEM、TEM、XRD、EDX、XPS、EXAFS、Raman、TGA和SQUID进行了很好的表征和鉴定。此外，通过对形态演化的系统研究，发现Co(OH)3纳米带的尺寸和形状可大规模调节，例如：通过精细的实验参数控制，长度为 50 至 1.5 µm，宽度为 5 µm 至 20 nm。此外，独特的准单晶Co3O4纳米带是由Co(OH)3前驱体通过热处理制备的。这是首次合成具有可调形状和尺寸的Co(OH)3，由于典型的一维纳米带所赋予的特定的大表面积与体积比和其他独特性能，它可能在气体传感器、催化剂和电极材料方面有重要的应用。
In this paper, we demonstrated a facile hydrothermal route leading to the generation of a new cobalt hydroxide, Co(OH)3, nanobelt. This new product of Co(OH)3 nanobelts was well characterized and identified by SEM, TEM, XRD, EDX, XPS, EXAFS, Raman, TGA and SQUID. Additionally, through systematic investigations on morphological evolution, it was found that the size and shape of Co(OH)3 nanobelts were adjustable in large scale, e.g. from 50 to 1.5 µm in length and 5 µm to 20 nm in width, by means of fine experimental parameter control. Furthermore, the unique pseudo-single-crystalline Co3O4 nanobelts were produced from Co(OH)3 precursors via heating treatment. This is the first synthesis of Co(OH)3 with tunable shapes and sizes, which may find important applications as gas sensors, catalysts, and electrode materials, owing to the specific large surface-to-volume ratio and other unique properties endowed by typical 1D nanobelts.