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首页> 外文期刊>Crystal growth & design >Green Synthesis of Hexagonal-Shaped WO3 center dot 0.33H(2)O Nanodiscs Composed of Nanosheets
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Green Synthesis of Hexagonal-Shaped WO3 center dot 0.33H(2)O Nanodiscs Composed of Nanosheets

机译：纳米片组成的六角形WO3中心点0.33H（2）O纳米圆片的绿色合成

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摘要

A facile route for the preparation of WO3 center dot 0.33H(2)O hexagonal-shaped nanodiscs composed of nanosheets via hydrothermal treatment of an aqueous peroxo-polytungstic acid solution has been demonstrated for the first time. The hexagonal-shaped nanodiscs obtained have an average diameter of 200 nm and a mean thickness of several tens of nanometers. The effects of the preparation conditions such as the hydrothermal temperature and precursor concentration on the crystalline phase and morphology of the products have been studied systematically. The WO3 center dot 0.33H(2)O nanodiscs with an orthorhombic structure and regular hexagonal morphology can be synthesized in a wide hydrothermal temperature range from 100 to 200 degrees C. However, in the absence of hydrogen peroxide, monoclinic tungsten oxide square nanoplates are obtained. The hexagonal-shaped nanodiscs morphology have been well explained based on the crystal structure of orthorhombic WO3 center dot 0.33H(2)O. It is expected that this material with a well-defined and accessible crystal surface may find applications in catalysis, gas sensors, and other research areas.
机译：首次证明了一种通过过氧-多钨酸水溶液的水热处理来制备由纳米片组成的WO3中心点0.33H（2）O六角形纳米圆片的简便途径。所获得的六边形纳米盘具有200nm的平均直径和几十纳米的平均厚度。系统研究了水热温度，前驱体浓度等制备条件对产物结晶相和形貌的影响。可以在100至200摄氏度的宽水热温度范围内合成具有正交晶结构和规则六边形形态的WO3中心点0.33H（2）O纳米圆片。获得。六角形的纳米圆盘形态已经很好地解释了基于正交晶体WO3中心点0.33H（2）O的晶体结构。预计这种具有清晰可访问的晶体表面的材料可能会在催化，气体传感器和其他研究领域中找到应用。

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