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A simple method for growing high quantity tungsten-oxide nanoribbons under moist conditions

机译：一种在潮湿条件下生长大量氧化钨纳米带的简单方法

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摘要

Tungsten oxide is one of the most important transition metal oxide materials, which possesses some unique properties such as electrochromic, optochromic, and gaschromic properties. In this paper, we report a simple method for synthesizing high quantity tungsten oxide nanoribbons by oxidizing a tungsten plate under moist conditions. Using potassium iodide as the catalyst, tungsten oxide nanoribbons with a thickness of 40-100 nm, width up to 1 mu m and length up to hundreds of micrometres are obtained on a large scale. The morphology, composition and crystal structure of the nanoribbons are characterized by various methods, such as scanning electron microscopy, transmission electron microscopy and x-ray diffraction. The nanoribbons comprise mainly monoclinic tungsten trioxide (WO_3) growing along the [001] direction and the orthorhombic WO_3(H_2O)0.33. The measured lattice parameters are beta = 89.93deg , a = 0.727'4 nm, b = 0.7501 nm, c = 0.3824 nm for WO_3 and a = 0.7359 nm, b = 1.251 nm, c = 0.7704 nm for WO_3(H_2O)0 33, respectively.
机译：氧化钨是最重要的过渡金属氧化物材料之一，它具有一些独特的特性，例如电致变色，光致变色和气致变色特性。在本文中，我们报告了一种通过在潮湿条件下氧化钨板来合成大量氧化钨纳米带的简单方法。使用碘化钾作为催化剂，可大规模获得厚度为40-100 nm，宽度最大为1μm，长度最大为数百微米的氧化钨纳米带。纳米带的形态，组成和晶体结构通过各种方法表征，例如扫描电子显微镜，透射电子显微镜和X射线衍射。纳米带主要包含沿[001]方向生长的单斜三氧化钨（WO_3）和正交晶体WO_3（H_2O）0.33。测得的晶格参数为WO_3的beta = 89.93deg，a = 0.727'4 nm，b = 0.7501 nm，c = 0.3824 nm，对于WO_3（H_2O）0，a = 0.7359 nm，b = 1.251 nm，c = 0.7704 nm ， 分别。

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