Preparation method of nano vanadium trioxide

The invention particularly relates to a preparation method of nano vanadium trioxide, and belongs to the technical field of phase change materials.The method comprises the steps that a vanadium source and organic acid are mixed to obtain a mixture; drying the mixture to obtain a precursor; the precursor is calcined, and nano vanadium trioxide is obtained; a precursor is obtained through a dry mixing method, then the vanadium trioxide nano-powder is obtained through a one-step calcination method, the product is high in purity, good in crystallinity and small in particle size, and the method has the advantages of being low in raw material cost, simple in equipment, short in preparation period, easy to prepare in a large scale, environmentally friendly and good in industrial application prospect. 本发明特别涉及一种纳米三氧化二钒的制备方法，属于相变材料技术领域，方法包括：将钒源和有机酸进行混合，得到混合物；对所述混合物进行干燥，得到前驱体；对所述前驱体进行煅烧，得到纳米三氧化二钒；通过干式混合法得到前驱体，后采用一步煅烧法得到三氧化二钒的纳米粉体，产物纯度高，结晶性好，颗粒小，该方法具有原料成本低、设备简单、制备周期短、易于大量制备和绿色环保的特点，具有很好的工业化应用前景。