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

A technology of mesoporous silica and amino functionalization, applied in chemical instruments and methods, alkali metal oxides/hydroxides, inorganic chemistry, etc., can solve the problem of low chemical activity, unsatisfactory glyphosate adsorption effect, The ion exchange capacity is small and other problems, and the adsorption effect is good, the preparation process is non-toxic, and the steps are simple and controllable.

Active 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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  • Zirconium-amino functionalized mesoporous silica and preparation method and application thereof
  • Zirconium-amino functionalized mesoporous silica and preparation method and application thereof
  • Zirconium-amino functionalized mesoporous silica and preparation method and application thereof

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Embodiment 1

[0031] A zirconium-amino functionalized mesoporous silica, the preparation method of which is as follows:

[0032] 1) Add 12g of hydroxyethylcellulose (HEC, viscosity in 1% aqueous solution is 250-400mPa·s) into 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 was dissolved in 350mL of deionized water to obtain a sodium metasilicate nonahydrate solution, and then the sodium metasilicate nonahydrate solution was added dropwise to the hydroxyethyl cellulose solution under the heat preservation state under stirring conditions, and the resulting mixed solution was mixed with 2mol / L hydrochloric acid solution to adjust the pH value to 5-6, react at 100°C for 2h, stop heating, continue stirring for 24h, then age at room temperature for 24h, then centrifuge, wash, dry at 105°C, and grind the obtained sample into powder. In an air atmosphere, the temperature was raised from room temperature ...

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Abstract

The invention relates to zirconium-amino functionalized mesoporous silica and a preparation method and application thereof.The zirconium-amino functionalized mesoporous silica is obtained by sequentially conducting amino modification and zirconium loading on mesoporous silica, the specific surface area of the zirconium-amino functionalized mesoporous silica is 150-600 m < 2 > / g, the pore volume of the zirconium-amino functionalized mesoporous silica is 0.5-1.5 cm < 3 > / g, and the average pore size of the zirconium-amino functionalized mesoporous silica is 5-30 nm. The zirconium-amino functionalized mesoporous silica provided by the invention has proper pore size and specific surface area, 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, green and environment-friendly in preparation process and suitable for large-scale production.

Description

technical field [0001] The invention belongs to the technical field of water, waste water, sewage or sludge treatment, and in particular relates to a zirconium-amino functionalized mesoporous silica and its preparation method and application. 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 m...

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
CPCB01J20/103B01J20/0211B01J20/28061B01J20/28064B01J20/28083C02F1/281C02F1/66C02F2101/306C02F2101/34C02F2101/38
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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