Method of preparing high-performance TiO2 nanometer photocatalystic material

A titanium dioxide and nanomaterial technology, which is applied in the field of preparation of high-performance titanium dioxide nanometer photocatalytic materials, can solve the problems of complex preparation steps, the photocatalytic degradation efficiency needs to be improved, etc., and achieves the effect of low cost

Inactive Publication Date: 2009-06-03
NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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Problems solved by technology

For example, the photocatalytic performance of titanium dioxide hollow microspheres can be improved by using the same solvothermal synthesis method and compounding gold nanoparticles, but it needs to be calcined at 600 °C and its preparation steps are complicated.
Using the same hydrothermal method, titanium dioxide hollow microspheres were synthesized with titanium potassium oxalate as raw material, and the specific surface area was increased to 130.2m 2 / g, the photocatalytic performance is slightly improved compared with TiO nanorods, but its photocatalytic degradation efficiency needs to be improved

Method used

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  • Method of preparing high-performance TiO2 nanometer photocatalystic material

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Effect test

Embodiment 1 2

[0016] The preparation of embodiment 1 titanium dioxide nanoribbon flower:

[0017] With 15mL 0.06mol / L potassium titanium oxalate (PTO) aqueous solution as the mother liquor, take PTO and H 2 o 2 The molar ratio of the mixed solution is 1:200. After the mixed solution is completely reacted, continue to stir for 10 minutes, transfer the obtained solution to a high-pressure reactor, heat it at 150°C for 0.5h, and then cool it to room temperature naturally. ℃ drying for 3 hours to obtain titanium dioxide nanorod flower material (see figure 1 a, figure 1 b).

Embodiment 2 2

[0018] The preparation of embodiment 2 titanium dioxide nano-rod-shaped flowers:

[0019] With 15mL 0.06mol / L potassium titanium oxalate (PTO) aqueous solution as the mother liquor, take PTO and H 2 o 2 The molar ratio of the mixed solution is 1:2000. After the reaction of the mixed solution is complete, continue to stir for 10 minutes, transfer the obtained solution to a high-pressure reactor, heat it at 200°C for 5 hours, and then cool it to room temperature naturally. Dry 3h to get titanium dioxide nanorod-shaped flower material (see figure 1 c, figure 1 d).

Embodiment 3 2

[0020] Embodiment 3 Preparation of titanium dioxide nanorod self-assembled hollow spheres:

[0021] With 15mL 0.06mol / L potassium titanium oxalate (PTO) aqueous solution as mother liquor, according to PTO and H 2 o 2 The molar ratio was 1:200, and 0.18mol H was added dropwise to the PTO solution 2 o 2 , After the dropwise addition is completed and stirred for 0.5h, the resulting solution is transferred into the reactor, heat-treated at 150°C for 5h and cooled naturally, and the resulting precipitate is cleaned and dried in a constant temperature drying oven at 60-70°C for 3h to obtain a self-assembled hollow titanium dioxide nanorod. ball material (see figure 1 e, figure 1 f).

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Abstract

The invention discloses a method for preparing high-performance TiO2 nanometer photocatalysis materials in the self-cleaning photocatalysis field. Oxydol with no treatment is utilized, titanium potassium oxalate is used as material, and the adjustable TiO2 nanometer material with multiple micro-morphology and high photocatalysis performance is prepared through a simple solvent-thermal method. The invention has the characteristics of simple operation, low cost, good product photocatalysis performance, suitability for industrial production, etc.

Description

technical field [0001] The invention discloses a preparation method of a high-performance titanium dioxide nano photocatalysis material, which belongs to the field of self-cleaning photocatalysis. Background technique [0002] In the field of photocatalytic applications, titanium dioxide nanomaterials with good photocatalytic properties have very broad application prospects. For the preparation process of titanium dioxide photocatalytic materials, the chemical synthesis method is beneficial to industrialization, but the synthetic raw materials used in the chemical method are mostly titanium tetrachloride, titanium tetrafluoride, butyl titanate, isopropyl titanate and other reagents , these titanium salts are not only harmful to the human body, but also easy to deliquescence in the air, the requirements for the preparation temperature and equipment are very strict, and the industrialization of the preparation method is difficult. If non-deliquescent and non-toxic titanium sa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J21/06C01G23/053
Inventor 李成榕吕玉珍汪佛池杜岳凡杨迎建蔡炜陈勇刘云鹏
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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