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首页> 外文期刊>Dalton transactions: An international journal of inorganic chemistry >Morphology controlled NH_4V_3O_8 microcrystals by hydrothermal synthesis
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Morphology controlled NH_4V_3O_8 microcrystals by hydrothermal synthesis

机译：水热合成形态控制的NH_4V_3O_8微晶

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摘要

Single crystalline ammonium trivanadate NH_4V_3O _8 with variable morphologies, including shuttles, flowers, belts, and plates, was synthesized by the hydrothermal treatment of NH_4VO _3 with acetic acid. The crystals optimally grow under gentle conditions of 140°C for 48 h. The resulting NH4V 3O8 microcrystals were characterized by means of X-ray diffraction, scanning electron microscopy, infrared and Raman spectroscopy, static magnetization studies, and thermal analysis. The key factors to control the size and morphology of the crystals are the pH value and the vanadium concentration. A tentative microscopic growth mechanism is proposed and it is demonstrated how shape and morphology of the resulting microcrystalline material can be tuned by appropriate synthesis parameters.
机译：通过用乙酸对NH_4VO _3进行水热处理，合成了具有可变形态的单晶三钒酸铵NH_4V_3O _8，包括梭，花，带和板。晶体在140°C温和条件下最佳生长48小时。通过X射线衍射，扫描电子显微镜，红外和拉曼光谱，静态磁化研究和热分析来表征所得的NH 4 V 3 O 8微晶。控制晶体大小和形态的关键因素是pH值和钒浓度。提出了一种试探性的微观生长机理，并证明了如何通过适当的合成参数来调节所得微晶材料的形状和形态。

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