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A method for synergistic production of hydrogen by photocatalytic treatment of wastewater

A technology for treating wastewater and photocatalysis, applied in chemical instruments and methods, light water/sewage treatment, hydrogen production, etc., to achieve the effects of easy recycling, improved photocatalytic efficiency, and high purity

Active Publication Date: 2021-11-12
吴洋洋
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] In the prior art, there is no research on the combination of BiOX materials and metal-organic framework materials for wastewater treatment and synergistic production of hydrogen

Method used

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  • A method for synergistic production of hydrogen by photocatalytic treatment of wastewater

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Experimental program
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Effect test

Embodiment 1

[0023] 1) Add 4 grams of bismuth salt to 1 ml of concentrated nitric acid, add deionized water after preliminary stirring, and after stirring evenly, add dropwise to the ammonium chloride solution with a concentration of 2 mol%, and stir while adding , to form a uniform suspension, adjust the pH of the solution to be neutral with 25% sodium hydroxide, then put it into a stainless steel autoclave, and react at a temperature of 200 ° C for 10 minutes. After the reaction, the precipitated product is washed with deionized water After washing and drying at a temperature of 100°C, the BiOCl nanopowder is obtained;

[0024] 2) Disperse the BiOCl nano-powder prepared in step 1) in deionized water to make a dispersion liquid, and immerse MIL-101 into the BiOCl nano-powder dispersion liquid according to the weight ratio of 4.6% loading, keep 7 hours, then take out the MIL-101 loaded with BiOCl nanopowder, and dry it at a temperature of 100°C to obtain a BiOCl / MIL-101 composite material;...

Embodiment 2

[0027] 1) Add 4.5 grams of bismuth salt to 1 ml of concentrated nitric acid, add deionized water after preliminary stirring, and after stirring evenly, add dropwise to 2 mol% ammonium chloride solution, stirring while adding , form a uniform suspension, adjust the pH of the solution to be neutral with 25% sodium hydroxide, then put it into a stainless steel autoclave, and react for 8.5 minutes at a temperature of 220 ° C. After the reaction, the precipitated product is washed with deionized water After washing and drying at a temperature of 100°C, the BiOCl nanopowder is obtained;

[0028] 2) Disperse the BiOCl nano-powder prepared in step 1) in deionized water to make a dispersion liquid, and immerse MIL-100 into the BiOCl nano-powder dispersion liquid according to the weight ratio of 5.6% loading, keep 8 hours, then take out the MIL-100 loaded with BiOCl nanopowder, and dry it at a temperature of 100°C to obtain a BiOCl / MIL-100 composite material;

[0029] 3) Put the prepar...

Embodiment 3

[0031] 1) Add 5.5 grams of bismuth salt to 1.5 milliliters of concentrated nitric acid, add deionized water after preliminary stirring, and after stirring evenly, add dropwise to the ammonium chloride solution with a concentration of 3 mol%, and stir while adding , to form a uniform suspension, adjust the pH of the solution to be neutral with 33% sodium hydroxide, then put it into a stainless steel autoclave, and react at a temperature of 250°C for 13 minutes. After the reaction, the precipitated product is washed with deionized water After washing and drying at a temperature of 110°C, the BiOCl nanopowder is obtained;

[0032] 2) Disperse the BiOCl nano-powder prepared in step 1) in deionized water to make a dispersion liquid, and immerse MIL-53 into the BiOCl nano-powder dispersion liquid according to the weight ratio of 7.8% loading, keep 9 hours, then take out the MIL-53 loaded with BiOCl nanopowder, and dry it at a temperature of 110°C to obtain a BiOCl / MIL-53 composite m...

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Abstract

The invention relates to the technical field of wastewater treatment, in particular to a method for synergistically producing hydrogen by photocatalytically treating wastewater. The metal-organic framework material is used to load BiOX to prepare a composite photocatalyst. The preparation process is simple, and at the same time, it can absorb and treat wastewater pollutants, immobilize and disperse uniform nanoparticles, and synergistically produce hydrogen.

Description

technical field [0001] The invention relates to the technical field of wastewater treatment, in particular to a method for synergistically producing hydrogen by photocatalytically treating wastewater. Background technique: [0002] Today, energy shortage and environmental pollution have become the primary problems to be solved at home and abroad. At present, the widely used methods in the field of wastewater treatment mainly include photocatalytic methods, electrochemical methods and other methods, and semiconductor photocatalytic materials play an important role in photocatalytic methods. Semiconductor photocatalytic materials directly convert solar energy into chemical Energy and electric energy, and complete mineralization and degradation of toxic and harmful pollutants in the environment are the most potential methods to solve energy and environmental problems in human society. TiO 2 Nanoparticles are relatively well-known semiconductor photocatalytic materials, but Ti...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/30C02F1/28C01B3/02
CPCC01B3/02C02F1/285C02F1/30
Inventor 吴洋洋
Owner 吴洋洋
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