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Method for preparing ordered mesoporous titanium dioxide photocatalyst

A technology of mesoporous titanium dioxide and photocatalyst, applied in titanium dioxide, titanium oxide/hydroxide, physical/chemical process catalyst, etc., can solve the problem of poor mesoporous order, low photocatalytic activity, and small specific surface of mesoporous titanium dioxide, etc. problem, to achieve the effect of low cost, simple preparation process and improved photocatalytic activity

Inactive Publication Date: 2012-10-24
HEILONGJIANG UNIV
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Problems solved by technology

[0004] The present invention aims to solve the technical problem that the specific surface of the mesoporous titanium dioxide prepared by the existing method is small and the order of the mesoporous pores is poor, resulting in low photocatalytic activity, thereby providing a method for preparing an ordered mesoporous titanium dioxide photocatalyst

Method used

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  • Method for preparing ordered mesoporous titanium dioxide photocatalyst
  • Method for preparing ordered mesoporous titanium dioxide photocatalyst
  • Method for preparing ordered mesoporous titanium dioxide photocatalyst

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specific Embodiment approach 1

[0015] Specific embodiment one: the preparation method of a kind of ordered mesoporous titanium dioxide photocatalyst in this embodiment is carried out according to the following steps:

[0016] 1. Surfactant functionalization: Weigh the surfactant, solvent and strong oxidant, wherein the mass ratio of surfactant to solvent is 0.01-0.25:1, and the mass ratio of strong oxidant to surfactant is 0.05-0.2:1 Dissolving the surfactant in a solvent, then adding a strong oxidizing agent, stirring for 1 to 48 hours at a temperature of 20 to 25° C. and a stirring speed of 100 to 300 r / min to obtain a surfactant solution;

[0017] 2. Preparation of titanium sol: Weigh titanium source and solvent according to the mass ratio of titanium source and solvent of 0.025 to 0.2:1, and dissolve the titanium source in the solvent to obtain a titanium solution, and then use the surfactant obtained in step one The solution is added to the titanium solution, and stirred for 0.5 to 24 hours to obtain a...

specific Embodiment approach 2

[0021] Specific embodiment 2: The difference between this embodiment and specific embodiment 1 is that the surfactant in step 1 is polyethylene oxide-polypropylene oxide-polyethylene oxide triblock copolymer P123, F127, twelve Sodium Alkyl Sulfate, Cetyltrimethylammonium Bromide, Acrylonitrile-Butadiene-Styrene Copolymer, Polyetherimide, Polyvinylpyrrolidone, Lauryl Polyethylene Glycol Ether, Polyethylene One or both of diol and triethanolamine are mixed in any proportion. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0022] Specific embodiment 3: The difference between this embodiment and specific embodiment 1 or 2 is that the solvent in step 1 is deionized water, ethanol, isopropanol and n-butanol or mixed in any proportion. Others are the same as in the first or second embodiment.

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Abstract

A method for preparing ordered mesoporous titanium dioxide photocatalyst relates to a method for preparing titanium dioxide photochemical catalyst. The method solves the problem that photocatalyst prepared by an existing method is small in specific surface of mesoporous titanium dioxide, poor in order of mesoporous, and accordingly low in photocatalysis activity. The method sequentially includes the following steps: (1) functionalizing surfactant; (2) preparing titanium sol; (3) aging the titanium sol to obtain dried gel; and (4) subjecting the dried gel to heat treatment to obtain the ordered mesoporous titanium dioxide photochemical catalyst. For the prepared photochemical catalyst, the specific surface of mesoporous titanium dioxide ranges from 100m<2> / g to 180m<2> / g, diameters of mesoporous are uniform, ducts of the mesoporous are order and advanced, and the photocatalyst is applicable to the field of photocatalysis.

Description

technical field [0001] The invention relates to a preparation method of titanium dioxide photocatalyst. Background technique [0002] With the rapid development of the world economy, the fossil energy such as coal, oil, and natural gas that human beings rely on for survival will rapidly approach exhaustion in the middle of this century, which will inevitably lead to a worldwide energy crisis. In addition, the excessive use of fossil energy has led to a series of serious environmental pollution problems such as the greenhouse effect and water pollution, which has greatly damaged the ecological environment of the earth. Therefore, to solve the energy crisis and environmental problems so as to realize the sustainable development of human beings has become a very challenging issue in the 21st century. Solar energy, as a renewable energy source, has no pollution to the environment, is inexhaustible, and is the most abundant clean energy available to human beings. TiO 2 It has ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J21/06C01G23/053
Inventor 付宏刚李婷周卫王蕾邢子鹏潘凯田国辉孙凡飞田春贵
Owner HEILONGJIANG UNIV
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