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A method for grinding-assisted self-infiltration synthesis of highly efficient catalytic degradation of methylene blue metal mesoporous silica

A mesoporous silica, catalytic degradation technology, applied in chemical instruments and methods, non-metallic elements, oxidized water/sewage treatment, etc., to achieve the effects of excellent adsorption/catalytic performance, fewer species, and excellent cycle stability

Active Publication Date: 2021-06-01
SUZHOU UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] A literature search of the prior art revolves around the synthesis of mesoporous Fe-SiO by self-infiltration assisted by grinding 2 、Co-SiO 2 , Cu-SiO 2 material, no domestic patent reports have been found, and there is little mention of synthetic grinding-assisted self-permeation synthesis of mesoporous Fe-SiO in the world. 2 materials, we are the first to use mesoporous SiO containing block copolymer templates 2 As a carrier, iron ions are effectively introduced into mesoporous silica by self-permeation through grinding assistance, and finally the template agent is removed by calcination and the iron precursor is converted at the same time, and a regular mesoporous structure, large specific surface area, and high adsorption are synthesized. Mesoporous Fe-SiO with high performance and strong thermal stability and high catalytic activity 2 It is an easy-to-operate, simple, fast, economical and environmentally friendly method for materials, and uses materials for adsorption and efficient catalytic degradation of organic dye wastewater

Method used

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  • A method for grinding-assisted self-infiltration synthesis of highly efficient catalytic degradation of methylene blue metal mesoporous silica
  • A method for grinding-assisted self-infiltration synthesis of highly efficient catalytic degradation of methylene blue metal mesoporous silica
  • A method for grinding-assisted self-infiltration synthesis of highly efficient catalytic degradation of methylene blue metal mesoporous silica

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] S1. Dissolve 2.0g of triblock copolymer P123 as a template in 75g of water, stir until completely dissolved, add 2.41g of aluminum chloride hexahydrate, and place the mixture in a water bath at 35°C for 0.5h;

[0033] S2. Using tetraethyl orthosilicate as the silicon source, the addition amount is 4.16g, and stirred for 24h in a water bath at 35°C;

[0034] S3. Pour the mixed solution in S2 into an autoclave for hydrothermal aging at 100°C for 24 hours, filter, wash with deionized water, repeat twice, and dry naturally to obtain mesoporous silica containing a template;

[0035] S4. Weigh 0.6g of mesoporous silicon oxide prepared in step S3, add 0.0162g of anhydrous ferric chloride, grind and mix, add 2 drops of absolute ethanol dropwise during the grinding process, the grinding time is 35min, and then In the furnace, the temperature was first raised to 200°C at a rate of 6°C / min, and kept for 30 minutes, then raised to 550°C at a rate of 2°C / min, kept for 300 minutes, a...

Embodiment 2

[0040] S1. Dissolve 2.0g of triblock copolymer P123 as a template in 75g of water, stir until completely dissolved, add 2.41g of aluminum chloride hexahydrate, and place the mixture in a water bath at 35°C for 1 hour;

[0041] S2. Using tetraethyl orthosilicate as the silicon source, the addition amount is 4.16g, and stirred for 24h under the condition of 35°C water bath;

[0042] S3. Pour the mixed solution in S2 into a high-pressure reactor for hydrothermal aging at 100°C for 24 hours, filter, wash with deionized water, repeat 3 times, and dry naturally to obtain mesoporous silica containing a template;

[0043] S4. Weigh 0.6g of mesoporous silicon oxide prepared in step S3, add 0.0162g of anhydrous ferric chloride, grind and mix, add 3 drops of absolute ethanol dropwise during the grinding process, the grinding time is 35min, and then In the furnace, the temperature was first raised to 200°C at a rate of 6°C / min, kept for 30 minutes, then raised to 550°C at a rate of 2°C / mi...

Embodiment 3

[0049] S1. Dissolve 2.0g of triblock copolymer P123 as a template in 75g of water, stir until completely dissolved, add 2.41g of aluminum chloride hexahydrate, and place the mixture in a water bath at 35°C for 0.5h;

[0050] S2. Using tetraethyl orthosilicate as the silicon source, the addition amount is 4.16g, and stirred for 24h under the condition of 35°C water bath;

[0051] S3. Pour the mixed solution in S2 into an autoclave for hydrothermal aging at 100°C for 24 hours, filter, wash with deionized water, repeat twice, and dry naturally to obtain mesoporous silica containing a template;

[0052] S4. Weigh 0.6g of mesoporous silicon oxide prepared in step S3, add 0.0811g of anhydrous ferric chloride, grind and mix, add 3 drops of absolute ethanol dropwise during the grinding process, the grinding time is 28min, and then In the furnace, the temperature was first raised to 200°C at a rate of 6°C / min, kept for 30 minutes, then raised to 550°C at a rate of 2°C / min, kept for 300...

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Abstract

The invention provides a method for grinding-assisted self-infiltration synthesis of highly efficient catalytic degradation of methylene blue metal mesoporous silica, comprising the following steps: S1. Dissolving the triblock copolymer P123 in water, adding aluminum chloride hexahydrate, and heating at 35°C Stir in a water bath for 0.5-1h; S2. Then add the silicon source, and continue to stir until precipitation occurs; S3. Put the mixed solution in S2 into a high-pressure reactor, and after 24 hours of hydrothermal aging at 100°C, filter to obtain a solid. Then wash and dry to obtain mesoporous silica containing a template; S4. Mix the mesoporous silica prepared in step S3 with anhydrous ferric trichloride, grind fully, then roast to remove the template to obtain metal Doped mesoporous silica material. The invention provides a method for synthesizing metal species-doped mesoporous silicon oxide with high-efficiency catalytic degradation of methylene blue, which is low in cost, simple in process, environmentally friendly, low-carbon, time-saving and energy-saving.

Description

technical field [0001] The invention relates to a kind of self-permeation synthesis and high-efficiency catalytic degradation of methylene blue mesoporous Fe-SiO 2 、Co-SiO 2 , Cu-SiO 2 The method of the material, specifically using mesoporous silica without removing the template as the carrier, and introducing metal species into the mesoporous silica structure in a self-permeable manner through grinding assistance, to obtain a mesoporous silica material with efficient catalytic degradation of methylene blue . Background technique [0002] Organic synthetic dyes are widely used in textile, food, beverage, printing, leather and other industries. It has the characteristics of high concentration, large emission, complex composition and difficult biochemical degradation, which brings huge environmental pollution and health risks. More importantly, after the printing and dyeing wastewater is treated by traditional methods, the water quality is still difficult to meet the disch...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/10B01J20/30B01J23/72B01J23/745B01J23/75C02F1/28C02F1/72C02F101/30C02F101/36C02F101/38
CPCB01J20/0225B01J20/0229B01J20/0237B01J20/103B01J23/72B01J23/745B01J23/75C02F1/281C02F1/722C02F1/725C02F2101/308C02F2101/36C02F2101/38C02F2101/40
Inventor 吴正颖陈志刚朱文俊林艳刘谢查振龙
Owner SUZHOU UNIV OF SCI & TECH
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