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首页> 外文期刊>Journal of Materials Research >Hydrothermal synthesis of anisotropic alkali and alkaline earth vanadates
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Hydrothermal synthesis of anisotropic alkali and alkaline earth vanadates

机译：各向异性碱金属和碱土金属钒酸盐的水热合成

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摘要

In the course of a systematic field study, anisotropic alkali and alkaline earth vanadates have been accessed through a straightforward, one-step hydrothermal process. They are formed quantitatively from V_2O_5 and alkali- or alkaline earth halide solutions after a few days of autoclave treatment in the temperature range between 100 and 220 deg C. The presence of ionic additives leads to an interplay between the formation of isotropic crystalline phases and the production of fibrous oxide materials, such as a novel magnesium vanadate. The influence of the hydrothermal parameters and of the alkali/alkaline earth halides on the emerging phases and morphologies has been investigated in the course of a systematic study. The results are compared with other vanadate- and transition metal oxide-based hydrothermal systems, and the emerging trends are discussed with respect to the development of predictive synthetic concepts for nanostructured vanadium oxides.
机译：在系统的现场研究过程中，已经通过简单的一步式水热过程获得了各向异性的碱金属和碱土金属钒酸盐。它们是由V_2O_5和碱金属或碱土金属卤化物溶液在100至220摄氏度的温度范围内进行几天高压灭菌处理后定量形成的。离子性添加剂的存在导致各向同性结晶相的形成和结晶过程之间的相互作用。生产纤维状氧化物材料，例如新型钒酸镁。在系统研究的过程中，研究了水热参数和碱金属/碱土金属卤化物对新兴相和形态的影响。将该结果与其他基于钒酸盐和过渡金属氧化物的水热体系进行了比较，并讨论了有关纳米结构钒氧化物的预测合成概念发展的新兴趋势。

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