The invention discloses a high-purity and high-density sintered tungsten oxide material, which is characterized by the following: belonging to inorganic chemistry non-metallic element; making tungsten oxide burn densification without adding any sintering aid; making the purity of the tungsten oxide higher than 99% and the density not less than 6. 7g/cm3. This tungsten oxide can be used to target material of tungsten oxide film plating, panel display, photoelectric transformation, photochromism and so on domain.




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The invention discloses a cerium ion doped tungsten trioxide catalyst and a preparation method and application thereof and belongs to the technical field of catalysts.

The preparation method of the cerium ion doped tungsten trioxide catalyst comprises the steps of (A), adding tungsten powder into H2O2 which is subjected to magnetic stirring at the speed of 200-300r/min; (B), adding cerous nitrate into CH3CH2OH which is subjected to magnetic stirring at the speed of 150-200r/min; (3) adding yellow sol-like matters obtained in the step (A) into the solution obtained in the step (B), heating the mixture with stirring, and aging the mixture; (D) placing the gel obtained in the step (C) into a drying oven to perform drying at the temperature of 100-105 DEG C, and grinding the dried gel into powder; and (E), placing the powder obtained in the step (D) into a muffle furnace, heating the powder, and calcining the powder to obtain the cerium ion doped tungsten trioxide catalyst.

The cerium ion doped tungsten trioxide catalyst produced by the preparation method is good in stability, high in activity, simple in preparation, low in cost, convenient to operate and not liable to cause secondary pollution.


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The invention relates to a method for preparing an orientated tungsten oxide nano film.

The method takes an ethanol suspension of monocrystal tungsten trioxide (WO3) nano-plates as a precursor, and utilizes the habit that the nano-plate with high diameter-thickness ratio tends to be parallel to a substrate and the principle that solvent volatilization causes the oriented self-assembly of the nano-plate to prepare the tungsten oxide (WO3) nano film which is formed by overlapping the tungsten trioxide (WO3) nano-plates and oriented along the [002] crystallographic direction. The method is completed at a room temperature, and does not require subsequent heating treatment; and the tungsten trioxide (WO3) nano film prepared is strongly oriented along the [002] crystallographic direction, namely the WO3 nano film is spread along an ab plane and a c- shaft is the film thickness direction.

The method has the characteristics of simple technological process, convenient operation, low requirements on equipment conditions and strong adaptability; and WO3 nano film materials have the characteristics of high crystallinity and good orientation.


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The invention discloses a nickel ion-doped tungsten trioxide catalyst, and a preparation method and application thereof, and belongs to the field of preparation of the catalyst.

The preparation method of the catalyst comprises the following steps of A) adding tungsten powder to H2O2, wherein the molar ratio of the tungsten powder to the H2O2 is 1 to 4, lastingly heating and stirring the tungsten powder; B) adding nickel acetate to CH3OH to heat and stir; C) injecting solution obtained from the step B) into yellow sol substance obtained from the step A), heating, stirring and aging; D) putting the gel obtained from the step C) into an oven to dry, and then grinding into powder; E) putting the powder obtained from the step D) into a muffle furnace, heating and calcining to obtain the nickel ion-doped tungsten trioxide catalyst.

The catalyst produced by the invention is high in stability and good in activity, not only can generate hydroxyl radical by photo-catalytic oxidation; the pollutant removal rate in the wastewater is obviously improved; and meanwhile, deep degradation of an intermediate oxide product also can be strengthened.


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