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Preparation method for yttrium phosphate catalyst with hollow structure

A technology of yttrium phosphate and catalyst, which is applied in the field of preparation of hollow structure yttrium phosphate catalyst, to achieve the effects of high photodegradation treatment efficiency, large specific surface area, and good crystal structure

Active Publication Date: 2017-03-29
CHANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a method for preparing a hollow structure yttrium phosphate catalyst in order to overcome the deficiencies in the process of photocatalytic degradation of pollutants in the prior art

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] Dissolve 0.5g of cetyltrimethylammonium bromide in 150mL of cyclohexane to make an organic solution, then add 10mL of yttrium nitrate solution with a concentration of 0.5mol / L into the organic solution, stir vigorously to form a micro Emulsion: Add 10 mL of sodium fluoride solution with a concentration of 0.5 mol / L dropwise into the microemulsion under continuous stirring, gradually generate yttrium trifluoride, separate the solid from the liquid, wash with absolute ethanol and deionized water for 6 times, Dry to obtain yttrium trifluoride nanoparticles; join yttrium trifluoride nanoparticles into 20mL water, dropwise add sodium hydrogen phosphate solution therein, the molar weight of sodium hydrogen phosphate is 1.2 times of the molar weight of yttrium nitrate used, add dropwise After completion, use a water bath to heat to 80° C. and keep it for 16 hours. The obtained solid is washed and dried to obtain a hollow structure yttrium phosphate catalyst.

[0013] The prepa...

Embodiment 2

[0015] Dissolve 0.25g of cetyltrimethylammonium bromide in 90mL of cyclohexane to make an organic solution, then add 10mL of yttrium nitrate solution with a concentration of 0.1mol / L into the organic solution, stir vigorously to form a micro Emulsion: Add 10 mL of sodium fluoride solution with a concentration of 0.1 mol / L dropwise to the microemulsion under continuous stirring, and gradually generate yttrium trifluoride, separate the solid from the liquid, wash with absolute ethanol and deionized water for 4 times, Dry to obtain yttrium trifluoride nanoparticles; join yttrium trifluoride nanoparticles into 20mL water, dropwise add sodium hydrogen phosphate solution therein, the molar weight of sodium hydrogen phosphate is 1.1 times of the molar weight of yttrium nitrate used, add dropwise After completion, use a water bath to heat to 70°C and keep for 10 hours, and the obtained solid is washed and dried to obtain a hollow structure yttrium phosphate catalyst.

[0016] The prep...

Embodiment 3

[0018] Dissolve 0.5g of cetyltrimethylammonium bromide in 120mL of cyclohexane to make an organic solution, then add 10mL of yttrium nitrate solution with a concentration of 0.4mol / L into the organic solution, stir vigorously to form a micro Emulsion: Add 10 mL of sodium fluoride solution with a concentration of 0.4 mol / L dropwise to the microemulsion under continuous stirring, and gradually generate yttrium trifluoride, separate the solid from the liquid, wash with absolute ethanol and deionized water for 5 times, Dry to obtain yttrium trifluoride nanoparticles; join yttrium trifluoride nanoparticles into 20mL water, dropwise add sodium hydrogen phosphate solution therein, the molar weight of sodium hydrogen phosphate is 1.1 times of the molar weight of yttrium nitrate used, add dropwise After completion, use a water bath to heat to 80° C. and keep it for 15 hours. The obtained solid is washed and dried to obtain a hollow structure yttrium phosphate catalyst.

[0019] The pre...

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PUM

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Abstract

The invention discloses a preparation method for an yttrium phosphate catalyst with a hollow structure. The preparation method successively comprises the following steps: dissolving cetyltrimethylammonium bromide in cyclohexane so as to prepare an organic solution, then adding an yttrium nitrate solution into the organic solution, and carrying out intense stirring so as to form a microemulsion; dropwise adding 10 mL of a sodium fluoride solution with a concentration of 0.1 to 0.5 mol / L into the microemulsion under continuous stirring so as to gradually generate yttrium trifluoride, carrying out solid-liquid separation, respectively carrying out cleaning with absolute ethyl alcohol and deionized water for 4 to 6 times, and carrying out drying so as to obtain yttrium trifluoride nanoparticles; and adding the yttrium trifluoride nanoparticles into 20 mL of water, then dropwise adding a dibasic sodium phosphate solution, wherein the molar weight of dibasic sodium phosphate is 1.1 to 1.2 times of the molar weight of the used yttrium nitrate, after completion of dropwise addition, carrying out water-bath heating to 70 to 80 DEG C, maintaining the temperature for 10 to 16 h so as to obtain a solid, and carrying out washing and drying so as to obtain the yttrium phosphate catalyst with the hollow structure. The catalyst prepared by using the method provided by the invention has the advantages of good crystal structure, large specific surface area, stability and high photodegradation treatment efficiency.

Description

technical field [0001] The invention relates to the field of new materials for environmental pollution control, in particular to a method for preparing a hollow structure yttrium phosphate catalyst. Background technique [0002] With the development of science and technology, toxic organic pollutants from industrial and agricultural production seriously threaten the environment and human health. It is of great significance to seek a new and efficient environmental governance technology. Photocatalytic technology has become an emerging environmental treatment technology with important application prospects due to its advantages of energy saving, high efficiency, complete pollutant degradation, and no secondary pollution. In recent years, the development of new and efficient visible light photocatalysts has become an important research content in photocatalytic technology. Among them, photocatalytic materials with surface plasmon resonance effect, because of their unique surfa...

Claims

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Application Information

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IPC IPC(8): B01J27/18C02F1/30
CPCC02F1/30B01J27/1804C02F2305/10B01J35/39
Inventor 赵文昌徐广永
Owner CHANGZHOU UNIV
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