Method for Synthesizing Quadrangle Tungsten Oxide Nano-powder

The invention relates to a preparation method of square tungsten oxide nano powder, belonging to the field of inorganic non-metallic materials.

The content thereof is as follows: tungstenic acid deposition obtained by the reaction of sodium tungstate and hydrochloric acid is used as a precursor, citric acid is used as an auxiliary reagent, hydrochloric acid is used to adjust pH value and nano tungsten oxide is grown in a high-pressure autoclave by heating. Heating mode can be microwave heating and resistance wire heating, and the nanocrystalline grown is square. The characteristic of the square tungsten oxide powder material is that: the size of the square tungsten oxide is between 80 and 150nm.

The advantages of the method are that: the process is simple, the cost is low and the shape and size of the tungsten oxide crystal are hydrothermally controlled by the citric acid auxiliary.


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