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Amorphous photo-catalyst and preparation method thereof

A catalyst and amorphous technology, applied in chemical instruments and methods, physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, etc., can solve problems such as complex processes and many parameters, and achieve simple processes, Improve compounding, low production cost effect

Inactive Publication Date: 2018-10-19
PANZHIHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The technical problem solved by the present invention is that there are many parameters to be controlled when preparing photocatalysts by hydrothermal method and template method, the process is complicated, and the preparation of amorphous photocatalysts by low-temperature combustion synthesis reaction has not been reported yet.

Method used

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  • Amorphous photo-catalyst and preparation method thereof

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preparation example Construction

[0025] A kind of preparation method of amorphous state photocatalyst provided by the invention comprises the following steps:

[0026] a. Dissolve soluble iron salts, ammonium nitrate, amine organic substances, and additives in deionized water or distilled water, and stir until completely dissolved to obtain a uniform solution;

[0027] b. Transfer the above solution to a heating device for heating. After the solution is boiled, evaporated, and bubbled to form a gel-like substance, a low-temperature combustion synthesis reaction occurs, and finally a powdery amorphous photocatalyst is obtained.

[0028] Wherein, the order of adding each raw material in step a is not limited, as long as a uniform solution is finally obtained.

[0029] Wherein, the soluble iron salt described in step a is ferric nitrate, ferric chloride or ferric sulfate.

[0030] Wherein, the amine organic compound in step a is urea, glycine, alanine or lysine, and preferably, the molar ratio of the amine orga...

Embodiment 1

[0040] Dissolve 0.025 mol of ferric nitrate, 0.075 mol of glycine, and 0.075 mol of glucose in deionized water, stir with a glass rod until completely dissolved, and heat with heating equipment. The solution undergoes low-temperature combustion synthesis after volatilization, concentration, and bubbling reaction to obtain a powdery amorphous state photocatalyst material. There is no obvious characteristic peak in the XRD figure, indicating that the product is an amorphous structure, and it can be seen from the SEM figure that the product morphology is a two-dimensional sheet structure. The obtained product was used as a photocatalyst to degrade the methylene blue solution, and the results showed that the methylene blue could be completely degraded within 5 minutes, indicating that the amorphous photocatalyst material had good photocatalytic performance for dye degradation.

Embodiment 2

[0042]Dissolve 0.025 mol of ferric nitrate, 0.06 mol of glycine, and 0.05 mol of glucose in deionized water, stir with a glass rod until completely dissolved, and heat with a heating device. The solution undergoes low-temperature combustion after volatilization, concentration, and bubbling Synthesis reaction, obtains the photocatalyst material of powdery amorphous state. There is no obvious characteristic peak in the XRD figure, indicating that the product is an amorphous structure, and the product morphology is similar to that of Example 1, which is a two-dimensional sheet structure. The obtained product was used as a photocatalyst to degrade the methylene blue solution, and the results showed that the methylene blue could be completely degraded within 7 minutes, indicating that the amorphous photocatalyst material had good photocatalytic performance for dye degradation.

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Abstract

The invention relates to an amorphous photo-catalyst and a preparation method thereof and belongs to the technical field of photo-catalysts. The technical problem to be solved by the invention is thatwhen the photo-catalyst is prepared by adopting a hydrothermal method and a template method, parameters required to be controlled are more, and the process is complicated. The invention adopts the technical scheme that an aqueous solution is prepared by mixing soluble iron salt, ammonium nitrate, an amine organic compound and an additive, and then the amorphous photo-catalyst with a sheet structure is synthesized by low temperature combustion. The preparation method provided by the invention is simple in preparation process and easy for industrial production, and the prepared amorphous photo-catalyst is suitable for the degradation of dyes as well as the degradation of organic pollutants in the water treatment process.

Description

technical field [0001] The invention relates to the technical field of photocatalysts, in particular to an amorphous photocatalyst and a preparation method thereof. Background technique [0002] With the continuous development of industry, environmental pollution is becoming more and more serious, such as the removal of refractory organic matter, eutrophication of water bodies, treatment of high-concentration industrial wastewater and polluted water sources, etc. Physical methods and biological methods in traditional water treatment processes are often not available. Satisfying result. Photocatalytic degradation technology uses sunlight as a potential radiation source to excite semiconductor catalysts to generate holes and electron pairs. When used to degrade organic matter in water, photogenerated holes will generate strong oxidizing free radicals such as OH, which can decompose water including Most pollutants including refractory organic matter. In addition, photocatalyt...

Claims

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Application Information

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IPC IPC(8): B01J23/745B01J35/00B01J35/02
CPCB01J23/745B01J35/00B01J35/30B01J35/39
Inventor 曹知勤左承阳张雪峰崔旭梅寇佳窈
Owner PANZHIHUA UNIV
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