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Preparation method of SrTiO3-TiO2 porous microsphere photocatalyst

A technology of porous microspheres and composites, applied in chemical instruments and methods, hydrogen production, physical/chemical process catalysts, etc., can solve the problems of uneven shape and size, few active sites, small specific surface area, etc., to achieve The test method is simple and easy, the photocatalytic activity is enhanced, and the effect of increasing the specific surface area

Inactive Publication Date: 2015-11-11
HEILONGJIANG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The present invention aims to solve the problems that the titanate photocatalyst material prepared in the prior art has relatively small specific surface area, low roughness factor, few active sites, and uneven size and shape, and provides a SrTiO 3 -TiO 2 Preparation method of porous microsphere photocatalyst
[0005] The purpose of this invention is mainly to solve the problems of small specific surface area, uneven shape and size, few active sites, and low photocatalytic activity of titanate, thus providing SrTiO 3 -TiO 2 Porous microsphere photocatalyst

Method used

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  • Preparation method of SrTiO3-TiO2 porous microsphere photocatalyst

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Embodiment 1

[0029] 1. Dissolving titanium source: Dissolve a certain amount of titanium source in a certain amount of ethanol, add a certain amount of glycerin to the solution, and stir for 0.5 hours to form a uniform and transparent solution.

[0030] 2. Hydrothermal reaction: The transparent solution in the first step is subjected to a hydrothermal reaction at a certain temperature for a certain period of time to obtain a precipitate.

[0031] 3. Dissolving the strontium source: Dissolve a certain amount of strontium source in a certain amount of ethanol solution, add a certain amount of glycerol to the solution, and stir until a homogeneous solution is formed.

[0032] 4. Add the precipitate obtained in step 2 to the solution in step 3.

[0033] 5. Hydrothermal reaction, the solution obtained in step 4 is subjected to a hydrothermal reaction at a certain temperature for a certain period of time.

[0034] 6. Separation, washing and drying: the precipitate obtained in step 5 is washed w...

Embodiment 2

[0038] The difference between this embodiment and the specific embodiment 1 is that the titanium source described in step 1 is tetrabutyl titanate. Others are the same as in Example 1.

Embodiment 3

[0040] The difference between this embodiment and Embodiments 1 to 2 is that the reaction temperature of the hydrothermal reaction described in step 2 is 180° C., and the reaction time is 1 h to 24 h. Others are the same as in Examples 1 to 2.

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Abstract

The invention provides a preparation method of a SrTiO3-TiO2 composite porous microsphere photocatalyst, and relates to a preparation method of a SrTiO3-TiO2 porous microsphere photocatalyst. The invention primarily to solve the problems of small specific surface area, large product size, uniform pore size, low photocatalytic activity, expensive titanium source and difficulty in practical application of the existing SrTiO3-TiO2. The method of the present invention is as follows: first dissolving a titanium source in ethanol, adding glycerol to the mixture, conducting hydrothermal reaction, adding ethanol to the precipitate, then conducting to a hydrothermal reaction, centrifuging and drying, and finally calcining into a powder, so as to obtain the SrTiO3-TiO2 porous microsphere. The invention has the advantages of simple process, low cost, little environmental pollution, simple equipment requirement, and easiness to commercialization.

Description

technical field [0001] The invention relates to a catalyst, in particular to a kind of SrTiO 3 -TiO 2 Composite porous microsphere photocatalyst and preparation method thereof. Background technique [0002] There are many kinds of titanate products, which can be divided into alkali metal titanates, alkaline earth metal titanates, rare earth metal titanates, etc. important location. my country is rich in titanium resources, and its reserves are the largest in the world, which has created favorable conditions for the development of my country's titanate industry. However, the research and production of titanate products in my country is still weak compared with developed countries and is extremely incommensurate with my country, a country with large titanium resources. Therefore, the development and research of titanate functional materials is more urgent and important. [0003] Nano-titanate has the characteristics of size effect, surface and interface effect, quantum siz...

Claims

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Application Information

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IPC IPC(8): B01J23/02B01J35/10C01B3/04
CPCY02E60/36
Inventor 陈亚杰田国辉付宏刚韩陶然肖玉婷
Owner HEILONGJIANG UNIV
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