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A kind of preparation method of highly dispersed photocatalyst

A photocatalyst and load-type technology, which is applied in chemical instruments and methods, physical/chemical process catalysts, chemical/physical processes, etc., can solve the problems of non-transparency, affecting photocatalyst absorption, reducing catalytic effect, etc., and achieves easy Separation, facilitate exchange, avoid reunion effects

Active Publication Date: 2016-06-15
江阴智产汇知识产权运营有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Commonly used catalyst supports include ion exchange resin, mesoporous silica, zeolite, etc. These materials are not transparent. After loading the catalyst, the support will affect the light absorption of the photocatalyst and reduce the catalytic effect.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] A silver nitrate solution with a molar concentration of 1 mol / L, a sodium chloride solution with a molar concentration of 1 mol / L and a sodium hydroxide solution with a molar concentration of 1 mol / L were stirred at room temperature for 30 minutes to obtain a silver-containing precipitate , after filtering and washing the precipitate, adding it to an aqueous solution containing sodium persulfate, stirring and reacting at 70°C, the stirring time is 4 hours; after the temperature drops to room temperature, a solution containing high-priced silver ions is obtained; wherein, The molar ratio of silver nitrate to sodium chloride is 1:0.5; the molar ratio of silver nitrate to sodium hydroxide is 1:1; the mass ratio of silver-containing precipitate to sodium persulfate is 0.5:1; weigh 3g at a temperature of Porous glass microspheres with a core-shell structure and a particle size of 150 μm after water etching under subcritical conditions at 300°C and a pressure of 10 MPa, soaked...

Embodiment 2

[0021] The silver nitrate solution that the molar concentration is 0.2mol / L, the sodium chloride solution that the molar concentration is 0.2mol / L and the sodium hydroxide solution that the molar concentration is 0.2mol / L are stirred at room temperature for 10 minutes to obtain Silver precipitate, after filtering and washing the precipitate, add it to the aqueous solution containing sodium persulfate, stir and react at 60°C, and the stirring time is 2 hours; after the temperature drops to room temperature, a solution containing high-priced silver ions is obtained ; Wherein, the molar ratio of silver nitrate and sodium chloride is 1:0.5; the molar ratio of silver nitrate and sodium hydroxide is 1:1; the mass ratio of silver-containing precipitate and sodium persulfate is 0.1:1; -3 g of porous glass microspheres with a core-shell structure and a particle size of 8 μm after water etching under subcritical conditions with a temperature of 250 ° C and a pressure of 10 MPa, the porou...

Embodiment 3

[0024] Be that the silver nitrate solution that molar concentration is 0.5mol / L, the sodium chloride solution that molar concentration is 0.5mol / L and the sodium hydroxide solution that molar concentration is 0.5mol / L are stirred at room temperature, and the time is 20 minutes, obtains containing Silver precipitate, after filtering and washing the precipitate, add it to the aqueous solution containing sodium persulfate, stir and react at 70°C, and the stirring time is 4 hours; after the temperature drops to room temperature, a solution containing high-priced silver ions is obtained ; Wherein, the molar ratio of silver nitrate and sodium chloride is 1:0.5; the molar ratio of silver nitrate and sodium hydroxide is 1:1; the mass ratio of silver-containing precipitate and sodium persulfate is 0.3:1; weigh 2g Porous glass microspheres with a core-shell structure and a particle size of 120 μm after water etching under subcritical conditions with a temperature of 300 ° C and a pressur...

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Abstract

The invention discloses a preparation method of highly dispersed and loaded silver phosphate photocatalyst. The specific steps are as follows: stirring silver nitrate solution, sodium chloride solution and sodium hydroxide solution at room temperature to form a silver-containing precipitate, adding the precipitate to into an aqueous solution containing sodium persulfate, and after stirring and reacting, a solution containing high-priced silver ions is obtained; the porous glass microspheres with a core-shell structure etched by water under subcritical conditions are soaked in a hydrofluoric acid solution , after separation, soak the porous glass microspheres in hydrochloric acid solution, and finally add the obtained porous glass microspheres into the solution containing high-priced silver ions, stir slowly, separate solid and liquid, wash with deionized water, 150-180 Bake at ℃ for 2 to 4 hours, then add it to the phosphoric acid solution and stir to make a highly dispersed and loaded silver phosphate photocatalyst. Porous glass microspheres are used as the carrier. Since glass is a transparent object, the carrier will not hinder the light during the photocatalysis process, and can fully exert the effectiveness of the photocatalyst.

Description

technical field [0001] The invention belongs to the field of water treatment, and relates to a preparation method of a highly dispersed loaded photocatalyst, in particular to a photocatalytic material for treating organic waste water and a preparation method thereof. Background technique [0002] At present, with the rapid development of industrial technology, the water resources that human beings rely on for survival are polluted to varying degrees, and water resource pollution has become an urgent problem that countries all over the world are facing. Pollutants in water, especially toxic organic pollutants, not only cause environmental pollution and ecological damage, but also seriously endanger human health. These organic pollutants include polycyclic aromatic hydrocarbons, polychlorinated biphenyls, pesticides, environmental interferons, dyes, etc. In June 2010, researchers from the Material Research Institute found that silver phosphate has the effect of photocatalyst,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J27/18C02F1/30
Inventor 马建锋王凯李良银姚超
Owner 江阴智产汇知识产权运营有限公司
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