Nano-anatase titanium oxide preparation

A technology of nano-anatase and titanium oxide, which is applied in the direction of chemical instruments and methods, inorganic pigment treatment, fibrous fillers, etc., can solve the problems of mixed crystal or poor crystallinity, reduced photocatalytic activity, complex process, etc. Large surface, high surface activity, and the effect of improving the specific surface

Inactive Publication Date: 2003-04-02
舟山明日纳米材料有限公司
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Problems solved by technology

These preparation methods have their own characteristics, but in addition to defects such as high cost and complex process, they also have the disadvantage of obtaining mixed crystal or poor crystallinity nano-anatase titanium oxide.
Th...

Method used

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  • Nano-anatase titanium oxide preparation

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Embodiment 1

[0012] Embodiment 1: at first 400 grams of nano-structured carrier material silicon-based oxides are added to 1500 ml of deionized water, dispersed with ultrasonic waves, then at room temperature, adding concentration is 120 ml of 15% titanium tetrachloride solution while stirring, and aging after adding After 1 hour, the pH was adjusted to 6.5 with sodium hydroxide solution, and the obtained reactant was centrifugally washed to be free of chloride ions, washed twice with ethanol, then dried at 450°C for 2 hours, dispersed by a jet mill, and finally obtained The crystal form of nano-anatase titanium oxide is shown in the attached figure.

Embodiment 2

[0013] Embodiment 2: at first 300g nano-structure carrier material nano-alumina is added to 3000ml deionized water, disperse with ultrasonic wave, then add concentration while stirring at room temperature and be 150ml of titanium tetrachloride solution of 30%, aging 1 after adding hour, and then adjust the pH to 9 with 10% potassium hydroxide solution, and the obtained reactant is centrifugally washed until there is no chloride ion, and washed twice with ethanol, then dried at 450°C for 2 hours, dispersed by a jet mill, and finally nano-anatase is obtained Mineral type titanium oxide.

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Abstract

A process for preparing nano-class anatase-type titanium oxide includes such steps as preparing the suspension of naon carrier with water, proportionally adding solution of TiCl4, adding alkali solution to regulate pH value to 6-9, generating solid phase, washing and calcining. Its advantages are high specific surface area, and high surface activity.

Description

technical field [0001] The invention relates to a preparation method of nano anatase titanium oxide. Background technique [0002] As an important inorganic functional material, titanium oxide has been applied in many fields such as modern industry, agriculture, national defense and science and technology. Titanium oxide has three crystal forms of brookite, rutile and anatase, and the two crystal forms of rutile and anatase are more widely used. Since the discovery in 1972 that the surface of titanium oxide can continuously decompose water through photocatalysis, the application of photocatalytic materials represented by it in purifying water resources, purifying air, sterilizing, and deodorizing has attracted widespread attention. The recently discovered superhydrophilicity of titanium oxide surface after ultraviolet irradiation has opened up new fields for its application research (such as surface self-cleaning of materials, etc.). According to a large ...

Claims

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Application Information

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IPC IPC(8): C09C1/36C09C3/00
Inventor 方燕骆维瑛黄海
Owner 舟山明日纳米材料有限公司
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