Nano-needle violet tungsten oxide has a diameter of 20-200nm, a length of 0.5-10μm, and a length-diameter ratio of 5-300. This type of violet tungsten oxide may be synthesized in one step by a solution process. Therefore, the reaction time is short, and the reaction initiation temperature is low. A large quantity of gases are produced in the reaction course, and sufficient contact with air is impeded, so that the generated product, namely, the violet tungsten oxide, is relatively single, favorable to the subsequent utilization of the powder.
The synthesized method, belonging to the technical field of advanced power metallurgy preparation, solves the problem that the particle size of the violet tungsten oxide powder prepared through the calcination of a traditional rotary furnace is coarse and large.
In addition, the method has higher efficiency for preparing the nano violet tungsten oxide compared with other methods, and has the advantages of high efficiency, low cost, high utilization rate of raw material powder and the like.
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