Preparation method of supported photocatalytic composite material

A composite material and load-type technology, which is applied in the field of preparation of nano-photocatalytic composite materials, can solve the problems of large investment and difficulty in recycling, and achieve the effects of fine and uniform powder particle size, good dispersion, and easy process control

Inactive Publication Date: 2015-04-01
青岛润国生态科技发展有限公司 +1
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

[0004] Although the modified titanium dioxide can enhance its sensitivity to solar energy, it still has problems such as difficulty in recycling and large investment, so many researchers consider fixing the photocatalyst on a certain carrier

Method used

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Examples

Experimental program
Comparison scheme
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Embodiment 1

[0020] 1. Accurately measure 2ml of tetrabutyl titanate, slowly pour it into 5ml of absolute ethanol under strong stirring, then add acetylacetone as an inhibitor to delay the hydrolysis of tetrabutyl titanate, and then use a magnetic stirrer Stir continuously for 30min.

[0021] 2. Take 1ml of deionized water and 5ml of absolute ethanol and mix evenly, then measure 0.1ml of the prepared 1mol / L glacial acetic acid solution, and drop it into the mixed solution while stirring.

[0022] 3. Slowly drop the solution obtained in step 2 into the solution of step 1 while stirring, then accurately weigh lanthanum oxide, dissolve it with an appropriate amount of nitric acid, and the molecular weight ratio of rare earth (RE) doping is 0.10%, continue to stir, and clean it with ultrasonic waves Machine vibration, finally get rare earth doped titanium dioxide sol.

[0023] 4. Immerse the selected zeolite carrier into the rare earth titanium dioxide sol obtained in step 3. After mixing eve...

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Abstract

The invention discloses a preparation method of a supported nano photocatalytic composite material, which comprises the following steps: preparing rare-earth-compound-doped titanium dioxide by a sol-gel process, wherein the rare-earth doping amount is 0.10-0.65%; and carrying out high-temperature calcination to support the titanium dioxide on zeolite, wherein the supporting amount of the zeolite is 10-55%. The wastewater treatment experiment detects that the COD chemical oxygen demand) degradation ratio of the supported nano photocatalytic composite material reaches 91% above.

Description

technical field [0001] The invention belongs to the field of preparation of photocatalytic materials, in particular to a preparation method of a loaded nano photocatalytic composite material. Background technique [0002] Photocatalytic oxidation technology is one of the technologies with the most development potential in wastewater treatment. It can degrade dyes, surfactants, organic halides, pesticides, oils and other pollutants in wastewater into small molecular substances for further treatment or Mineralized into environmentally friendly inorganic substances. Among the photocatalytic materials for treating wastewater pollutants, titanium dioxide has become the most widely used material because of its good photocatalytic effect, stable performance, low price, safety and pollution-free. However, titanium dioxide has problems such as large band gap, low light quantum yield, low utilization rate of solar energy, easy deactivation of catalyst, difficulty in recovery, small s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/10
Inventor 仝利赵红李红莲
Owner 青岛润国生态科技发展有限公司
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