Method for Preparing Ultrafine Tungsten Oxide With Template Method

Preparation of ultrafine kind of tungsten oxide template method steps as follows:

(1) 1-50mg a diameter of 2-30nm, the number of layers of 1-30 layers of carbon nanotubes added to 50-30mL of anhydrous ethanol, ultrasonic dispersion 24h , to obtain a solution A;

(2) 250mg of sodium tungstate crystals were dissolved in the 50-100mL volume ratio of 2:3 mixture of ethanol and distilled water, and then added dropwise at a concentration of 36.5% hydrochloric acid 0.1-20mL, a precipitate B;

(3) A and mixture B, dispersing 5-48h, filtered and dried to give a carbon nanotube / tungsten oxide precursor C, will be placed in a horizontal quartz reactor, wherein the charge to the oxygen, the reaction temperature is 400-1100 ℃, holding time 10-24h, cooling, to obtain a particle size of the tungsten oxide particles of 10-500nm. The present invention is easy to get raw materials, low cost, environmental pollution.  

Preparation process is simple, small particles of tungsten oxide obtained high purity, uniform distribution.




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