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A method for preparing black titanium dioxide by hydrothermal synthesis

A black titanium dioxide, hydrothermal synthesis technology, applied in the direction of titanium dioxide, titanium oxide/hydroxide, etc., can solve the problems of unguaranteed product quality, high cost, harsh production conditions, etc., to achieve short reaction time and cost. Low cost and the effect of improving production efficiency

Active Publication Date: 2016-02-24
重庆深盟新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method consumes a lot of energy, the production conditions are harsh, the yield is also low, and the product quality cannot be guaranteed, resulting in high costs

Method used

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  • A method for preparing black titanium dioxide by hydrothermal synthesis
  • A method for preparing black titanium dioxide by hydrothermal synthesis
  • A method for preparing black titanium dioxide by hydrothermal synthesis

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Take 100g of Beijing Haoyun FTiH2 titanium hydride powder sold on the market, 100g of sodium peroxide from Tianjin Damao Reagent Factory, and 100g of water, put them in a beaker, mix them evenly, and add them to the polytetrafluoroethylene lining of the reactor. The degree of filling is 80%. Put the liner into the reactor and tighten the steel cover. The reaction kettle was placed in a constant temperature reactor, the reaction temperature was 200° C., and the reaction time was 5 hours. After the reaction, the obtained product was centrifuged at a speed of 4000r / min and the centrifugation time was 15min, the supernatant was discarded, the precipitate was taken, washed several times with deionized water, and the precipitate was dried in an oven to obtain a black Titanium dioxide powder.

Embodiment 2

[0028] Take 90g of Jinzhou Haotian FTiH2 titanium hydride powder sold on the market, 100g of sodium peroxide from Tianjin Dagu Chemical Industry Co., Ltd., and 100g of water, put them in a beaker, mix them evenly, and add them to the polytetrafluoroethylene lining of the reactor. The degree of filling is 80%. Put the liner into the reactor and tighten the steel cover. The reaction kettle was placed in a constant temperature reactor, the reaction temperature was 200° C., and the reaction time was 5 hours. After the reaction, the obtained product was centrifuged at a speed of 4000r / min and the centrifugation time was 15min, the supernatant was discarded, the precipitate was taken, washed several times with deionized water, and the precipitate was dried in an oven to obtain a black Titanium dioxide powder.

Embodiment 3

[0030] Take the Jinzhou Haixin FTiH sold on the market 2 -80g of type-2 titanium hydride powder, 80g of sodium peroxide from Tianjin Fuchen Chemical Reagent Factory, and 90g of water were placed in a beaker, mixed evenly, and then added to the polytetrafluoroethylene lining of the reaction kettle. The degree of filling is 80%. Put the liner into the reactor and tighten the steel cover. The reaction kettle was placed in a constant temperature reactor, the reaction temperature was 200° C., and the reaction time was 5 hours. After the reaction, the obtained product was centrifuged at a speed of 4000r / min and the centrifugation time was 15min, the supernatant was discarded, the precipitate was taken, washed several times with deionized water, and the precipitate was dried in an oven to obtain a black Titanium dioxide powder.

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Abstract

The invention discloses a method for preparing black titanium dioxide by using a hydrothermal synthesis method. The method comprises the following specific steps: (1) adding sodium peroxide or potassium peroxide into titanium hydride or titanium nitride powder, mixing the materials uniformly, adding water, and stirring the materials uniformly; (2) soaking the polytetrafluoroethylene lining of a reaction kettle into aqua regia at the room temperature for 1 hour, boiling the polytetrafluoroethylene lining with distilled water for three times, putting a powder mixed solution prepared in the step (1) into the polytetrafluoroethylene lining, putting the polytetrafluoroethylene lining into a matched steel casing, and tightening the steel casing; (3) putting the reaction kettle into a constant-temperature reactor, and reacting at the temperature of 150-250 DEG C for 3-7 hours; (4) after the reaction, centrifuging a product obtained in the step (3), discarding supernatant, taking precipitate out, and washing the precipitate with deionized water; and (5) drying the precipitate obtained in the step (4) to obtain the black titanium dioxide powder.

Description

technical field [0001] The invention relates to the technical field of titanium dioxide preparation, in particular to a method for preparing black titanium dioxide by using a hydrothermal synthesis method. Background technique [0002] With the economic growth and the improvement of people's awareness of environmental protection, environmental issues are getting more and more attention. The toxic and harmful gases contained in the air are also harmful to people's health. How to safely and efficiently reduce the content of toxic and harmful gases in the air has become an important issue. As a non-toxic, harmless and efficient nano-photocatalyst, photocatalyst has gradually entered the market and attracted more and more attention. Photocatalysis, as the name suggests, is the catalysis caused by light. Under the induction of light, the catalyst can safely and efficiently decompose toxic and harmful gases such as formaldehyde, toluene, TVOC, etc. In addition, it also has the ef...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01G23/053
CPCC01G23/053C01P2002/72C01P2004/03
Inventor 汪远昊
Owner 重庆深盟新材料科技有限公司
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