Department of Complexity Science and Engineering, School of Frontier Sciences, University of Tokyo, Kashiwa, Chiba, Japan.
Nanotechnology. 2010 Jan 29;21(4):045605. doi: 10.1088/0957-4484/21/4/045605. Epub 2009 Dec 16.
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 microm in length and 5 microm to 20 nm in width, by means of fine experimental parameter control. Furthermore, the unique pseudo-single-crystalline Co(3)O(4) 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.
在本文中，我们展示了一种简便的水热路线，可生成一种新的钴氢氧化物 Co(OH)(3)纳米带。通过 SEM、TEM、XRD、EDX、XPS、EXAFS、拉曼、TGA 和 SQUID 对这种 Co(OH)(3)纳米带的新产品进行了很好的表征和鉴定。此外，通过对形态演变的系统研究，发现通过精细的实验参数控制，Co(OH)(3)纳米带的尺寸和形状可以在较大范围内进行调节，例如长度从 50 到 1.5 微米，宽度从 5 微米到 20nm。此外，通过加热处理 Co(OH)(3)前体，可以得到独特的类单晶体 Co(3)O(4)纳米带。这是首次合成具有可调形状和尺寸的 Co(OH)(3)，由于典型的 1D 纳米带具有特定的大表面积与体积比和其他独特的性质，因此它可能在气体传感器、催化剂和电极材料等方面有重要的应用。
