Preparation methods of Ti3O5 powder

Abstract

The invention provides preparation methods of Ti3O5 powder. Three methods are provided, wherein the first method comprises the following steps of: (1) charging; (2) uniformly mixing raw materials by means of ball milling, and drying to obtained mixed powder for sintering; (3) sintering the mixed powder for sintering for 1 to 4 hours under a temperature of 1000 to 1400 DEG C in a vacuum or nitrogen or argon atmosphere. The second method comprises the following steps of: (1) charging; (2) performing ball milling, namely, performing dry ball milling for 2 to 6 hours through a ball mill at a rotating speed of 100 to 300 rotations per minute based on the ball-to-powder ratio of (8-40): 1, and then sieving and separating out milling ball bodies to obtain the mixed powder; (3) sintering mixed powder for 1 to 4 hours under a temperature of 700 to 1000 DEG C in a vacuum or nitrogen or argon atmosphere. The third method comprises the following steps of: (1) charging; (2) preparing a mixed solution with the raw materials through distilled water or deionized water, performing spray granulation with a spray dryer, and then drying; (3) sintering the particles for 1 to 4 hours under a temperature of 1000 to 1400 DEG C in a vacuum or nitrogen or argon atmosphere. With the adoption of the preparation methods, high-purity Ti3O5 powder can be obtained, the process is simplified, the cost is decreased, and mass industrial production is realized.

Description

technical field [0001] The invention belongs to the technical field of conductive materials and gas-sensitive materials, in particular to oxygen-sensitive materials Ti 3 o 5 Powder preparation method. Background technique [0002] Ti 3 o 5 As a kind of titanium oxide material, because of its special crystal structure, it has certain electrical conductivity and oxygen-sensing properties, which makes it have a good application prospect in gas-sensing components. As an emerging material, it has become one of the hotspots in the research of functional materials. Existing Ti 3 o 5 The preparation methods include sputtering method, reduction method, etc., but the above-mentioned methods in the literature report are cumbersome to operate, and the output is small, which can only meet the needs of laboratory research and cannot be industrialized. It is difficult to prepare high-purity Ti 3 o 5 , the product is usually accompanied by other titanium oxide product impurities. ...

AI Technical Summary

Problems solved by technology

Existing Ti 3 o 5 The preparation methods include sputtering method, reduction method, etc., but the above-mentioned methods in the literature report are cumbersome to operate, and the output is small, which can only meet the needs of laboratory research and cannot be industrialized. It is difficult to prepare high-purity Ti 3 o 5 , the product is usually accompanied by other titanium oxide product impurities

The presence of these impurities will inevitably affect the Ti 3 o 5 characteristics that limit its application to

Although recent studies have reported the use of hydrogen to reduce titanium dioxide in a molybdenum tube furnace to prepare high-purity Ti 3 o 5 Powder (λ-Ti 3 o 5 Preparation of powder and its optical storage performance, Journal of Inorganic Materials, 2013, 28: 425-430), but because hydrogen reduction can only reduce the raw material powder in contact with hydrogen, the raw material powder can only accumulate a thin layer, so The output is also extremely small, while hydrogen reduction requires a large amount of hydrogen source, the cost is high, and the hydrogen treatment operation is complicated, which has great unsafety, which makes it difficult to industrialize mass production of Ti 3 o 5 powder, so the deficiencies of the existing technology limit the Ti 3 o 5 Promoted application of

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