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Iron-amino functionalized mesoporous silica and preparation method and application thereof

A technology of mesoporous silica and amino functionalization, which is used in the treatment of water, sewage or sludge, and wastewater. Fast, good adsorption effect, large adsorption capacity

Pending Publication Date: 2022-03-11
WUHAN INSTITUTE OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the chemical activity of silica mesoporous materials is not high, and the ion exchange capacity is small, so the adsorption effect of glyphosate is still not ideal.

Method used

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  • Iron-amino functionalized mesoporous silica and preparation method and application thereof
  • Iron-amino functionalized mesoporous silica and preparation method and application thereof
  • Iron-amino functionalized mesoporous silica and preparation method and application thereof

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Embodiment 1

[0032] A kind of iron-amino functionalized mesoporous silica, its preparation method is as follows:

[0033] 1) Dissolve 12g of hydroxyethylcellulose (HEC, viscosity in 1% aqueous solution is 250-400mPa·s) in 1000mL of water, heat to 100°C and stir to dissolve to obtain aqueous solution of hydroxyethylcellulose, and add 56.84g of Na 2 SiO 3 9H 2 O is dissolved in 350mL of deionized water to obtain a sodium metasilicate nonahydrate solution, and then the sodium metasilicate nonahydrate solution is added dropwise to the hydroxyethyl cellulose solution under stirring conditions, and the resulting mixed solution is washed with 2mol / L hydrochloric acid Adjust the pH value of the solution to 5-6, react at 100°C for 2h, stop heating, continue to stir for 24h, then age at room temperature for 24h, then centrifuge, wash, dry at 105°C, grind the obtained sample into powder, and put it in the air atmosphere From room temperature at a heating rate of 2°C / min to 550°C for 6 hours to remo...

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Abstract

The invention relates to iron-amino functionalized mesoporous silica and a preparation method and application thereof.The iron-amino functionalized mesoporous silica is obtained by sequentially conducting amino modification and iron loading on mesoporous silica, the specific surface area of the iron-amino functionalized mesoporous silica is 150-600 m < 2 > / g, the pore volume of the iron-amino functionalized mesoporous silica is 0.4-1.5 cm < 3 > / g, and the average pore diameter of the iron-amino functionalized mesoporous silica is 5-30 nm. The iron-amino functionalized mesoporous silica provided by the invention has proper pore size and surface reaction activity, has good adsorption effect on glyphosate in water, high adsorption rate and large adsorption capacity, and is relatively low in raw material cost, simple and controllable in preparation steps, mild in reaction condition, non-toxic and environment-friendly in preparation process and hopeful to realize industrial production.

Description

technical field [0001] The invention belongs to the technical field of water, waste water, sewage or sludge treatment, and specifically relates to an iron-amino functionalized mesoporous silica, a preparation method and application thereof. Background technique [0002] Glyphosate is a total herbicide with the largest output and demand in the global market. Compared with other herbicides, glyphosate is simple, effective, and economical, so it is widely used in agricultural and urban environments, resulting in a sharp increase in the use of glyphosate herbicides. Excessive glyphosate is easy to enter into natural water bodies, causing great harm to the water environment and human health. Therefore, the treatment of glyphosate in water has become a focus in the field of water treatment. [0003] The treatment methods of glyphosate wastewater mainly include: chemical oxidation method, biological method, chemical precipitation method, membrane separation method, adsorption met...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/10B01J20/28B01J20/30C02F9/04C02F1/28C02F101/30C02F101/34C02F101/38
CPCB01J20/103B01J20/0229B01J20/28061B01J20/28064B01J20/28083C02F1/281C02F1/66C02F2101/306C02F2101/34C02F2101/38
Inventor 吕仁亮黄茜夏婷沈浩徐彩丽陈苏芳李萍马家玉王轶
Owner WUHAN INSTITUTE OF TECHNOLOGY
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