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Preparation method and application of BiOCl/Fe-MOFs composite catalytic material

A catalytic material and reaction technology, used in organic compound/hydride/coordination complex catalysts, chemical instruments and methods, physical/chemical process catalysts, etc. The method is complex and other problems, to achieve the effect of fast preparation, simple preparation method and high purity

Pending Publication Date: 2021-07-02
杭州朗迈新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the synthesis methods of these composite materials are relatively complicated. Generally, MOFs are first synthesized by hydrothermal method or solvothermal method and then BiOX is synthesized, or BiOX is first synthesized and then MOFs are synthesized by hydrothermal method, and N,N-dimethylformaldehyde is often used in the preparation reaction. Amide DMF, ethylene glycol EG and other organic solvents, the whole preparation process is not environmentally friendly and not suitable for large-scale production

Method used

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  • Preparation method and application of BiOCl/Fe-MOFs composite catalytic material
  • Preparation method and application of BiOCl/Fe-MOFs composite catalytic material
  • Preparation method and application of BiOCl/Fe-MOFs composite catalytic material

Examples

Experimental program
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Effect test

Embodiment 1

[0030] Weigh 1.926g (9.69mmol) of ferrous chloride tetrahydrate and dissolve it in 97.2g deionized water, then add 0.539g (1.71mmol) of bismuth trichloride and dissolve it in the above solution to obtain mixed solution A, wherein bismuth ions account for The mole fraction of metal ions is 15%. Add 1.676g (7.6mmol) of trimesic acid into 23.72g of 1mol / L NaOH (22.8mmol) solution, heat to 60-70°C, stir and dissolve to obtain a clear solution B. Then solution B was slowly added dropwise to solution A at a rate of 0.5 mL / min, and the reaction was continued to stir at 30° C. at a rate of 400 r / min for 6 h. The resulting reaction mixture was left to stand, the supernatant was poured off, soaked in hot water and absolute ethanol, washed, and centrifuged several times, and then dried in a vacuum oven at 60°C to obtain the final BiOCl / Fe-MOFs composite catalytic material. figure 1 It is the SEM image of BiOCl / Fe-MOFs composite catalytic material.

Embodiment 2

[0032]Weigh 1.473g (7.41mmol) ferrous chloride tetrahydrate and dissolve in 97.2g deionized water, then add 1.528g (3.991mmol) of bismuth trichloride and dissolve in the above solution to obtain mixed solution A, wherein bismuth ions account for The mole fraction of metal ions is 35%. 1.676g (7.6mmol) of trimesic acid was added to 23.72g of 1mol / L NaOH (22.8mmol) solution, and heated to 60-70°C to obtain a clear solution B. Then solution B was slowly added dropwise to solution A at a rate of 0.3 mL / min, and continued to stir at 35° C. at a rate of 300 r / min for 6 h. The resulting reaction mixture was left standing, the supernatant was poured off, soaked in hot water and absolute ethanol, washed, centrifuged several times, and then dried in a vacuum oven at 60°C to obtain the final BiOCl / Fe-MOFs composite catalytic material.

Embodiment 3

[0034] Weigh 1.133g (5.70mmol) ferrous chloride tetrahydrate and dissolve it in 97.2g deionized water, then add 1.797g (5.70mmol) of bismuth trichloride and dissolve it in the above solution to obtain mixed solution A, wherein bismuth ions account for The mole fraction of metal ions is 50%. 1.676g (7.6mmol) of trimesic acid was added to 23.72g of 1mol / L NaOH (22.8mmol) solution, and heated to 60-70°C to obtain a clear solution B. Then solution B was slowly added dropwise to solution A at a rate of 0.6 mL / min, and continued to stir at 20° C. at a rate of 500 r / min for 6 h. The resulting reaction mixture was left standing, the supernatant was poured off, soaked in hot water and absolute ethanol, washed, centrifuged several times, and then dried in a vacuum oven at 60°C to obtain the final BiOCl / Fe-MOFs composite catalytic material.

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Abstract

The invention belongs to the field of advanced oxidation and advanced treatment of wastewater, particularly relates to preparation and application of a BiOCl / Fe-MOFs composite catalytic material, and is suitable for removing organic pollutants in wastewater. According to the preparation method, ferrous chloride, a bismuth trichloride aqueous solution and a sodium hydroxide solution of trimesic acid are mixed and react to obtain the BiOCl / Fe-MOFs composite catalytic material. The preparation method is high in preparation speed, adjustable in product composition, high in purity, simple, free of special equipment, free of DMF, ethylene glycol and other organic solvents, low in cost, green and environment-friendly in preparation process, suitable for industrial production, capable of meeting the actual application requirement. The catalyst has a good effect of catalyzing H2O2, persulfate, O3 and other oxygen sources to degrade organic matter under the assistance of visible light.

Description

technical field [0001] The invention belongs to the field of advanced oxidation advanced treatment of wastewater, in particular to the preparation and application of a BiOCl / Fe-MOFs composite catalytic material, which is suitable for the removal of organic pollutants in wastewater. Background technique [0002] At present, the wastewater discharged from printing and dyeing, pharmaceutical, chemical and other industries contains a large amount of organic matter, which has high concentration, high toxicity, and poor biodegradability. The removal effect has aroused great concern in the industry. As an efficient and environmentally friendly technology, advanced oxidation technology has been widely used in the removal of harmful and toxic organic substances in wastewater. Advanced oxidation technology usually uses catalysts to catalyze the decomposition of hydrogen peroxide, persulfate or ozone to generate strong oxidizing hydroxyl radicals, persulfate radicals, superoxide radic...

Claims

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Application Information

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IPC IPC(8): B01J31/22B01J31/26B01J35/10C02F1/72C02F1/78
CPCB01J31/1691B01J31/223B01J31/26C02F1/725C02F1/722C02F1/78B01J2531/842B01J35/61
Inventor 倪华钢王梅徐莉群
Owner 杭州朗迈新材料有限公司
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