Preparation method of magnetic microcapsules coated with metal complex

A metal complex and microcapsule technology is applied in the field of metal complex microcapsule preparation to achieve the effects of firm structure, good adsorption and permeability performance, and few influencing factors

Inactive Publication Date: 2017-03-22
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a method for preparing magnetic microcapsules coated with metal complexes. The method is simple and easy, has few influencing factors, and solves the recycling problem existing in the existing microcapsule-loaded catalyst technology. It has great potential and application value for the treatment of organic matter in environmental wastewater

Method used

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  • Preparation method of magnetic microcapsules coated with metal complex
  • Preparation method of magnetic microcapsules coated with metal complex
  • Preparation method of magnetic microcapsules coated with metal complex

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Pre-configured 0.1% homogeneous catalyst complex CoC 18 h 16 N 2 o 4 0.5(H 2 O) 50mL aqueous solution, add 10g gelatin, mechanically stir at 20°C, and add 1g magnetic γ-Fe 2 o 3 Powder, high-speed homogeneous (stirring speed is 10000rpm, time is 15min) after dispersion, adding 210g mass ratio of liquid paraffin-Span80 oil phase dispersed phase (the speed of stirring during preparation is 400rpm; the temperature of water bath heating is 60°C for 25min), stirred at 10000rpm for 15min, cooled to 3°C in an ice bath, added hydrochloric acid to adjust the pH to 3, and then added 5mL of 25% glutaraldehyde aqueous solution (the dropping rate was 1 drop / second) for cross-linking. Stir at 450rpm for 180min, then add isopropanol for dehydration, filter with suction and wash the filter cake with petroleum ether to obtain magnetic microcapsules coated with metal complexes with excellent dispersibility, such as figure 1 shown.

Embodiment 2

[0039] Pre-configured 0.1% homogeneous catalyst complex CoC 18 h 16 N 2 o 4 0.5(H 2 O) 50 mL of aqueous solution, add 5 g of gelatin, mechanically stir at 20 ° C, and add 2 g of magnetic nano-iron powder, high-speed homogenization (stirring speed is 10000 rpm, time is 15 min) after dispersion, add 210 g of liquid paraffin with a mass ratio of 40:1 -Span80 oil phase dispersed phase (stirring speed during preparation is 400rpm; heating temperature in water bath is 60°C, time is 25min), cool down to 3°C in ice bath, add hydrochloric acid to adjust pH to 3, then add 25% glutaraldehyde Aqueous solution 7mL (drop rate: 1 drop / second) was cross-linked, stirred at 400rpm for 150min, then added isopropanol for dehydration, suction filtered and petroleum ether was used to wash the filter cake, and a coated metal complex with excellent dispersibility was obtained. magnetic microcapsules.

Embodiment 3

[0041] Pre-configured 0.1% homogeneous catalyst complex CoC 18 h 16 N 2 o 4 0.5(H 2 O) 50 mL of aqueous solution, add 5 g of gelatin, mechanically stir at 20 ° C, and add 3 g of magnetic Fe 3 o 4 Powder, high-speed homogeneous (stirring speed is 10000rpm, time is 15min) after dispersion, add 210g mass ratio and be the liquid paraffin-Span80 oil phase dispersed phase of 30:1 (the speed of stirring during preparation is 400rpm; The temperature of water bath heating is 60°C for 25min), cool down to 3°C in an ice bath, add hydrochloric acid to adjust the pH to 3, then add 8mL of 25% glutaraldehyde aqueous solution (drop rate: 1 drop / second) for crosslinking, and stir at 200rpm for 150min , and then add isopropanol for dehydration, filter with suction and wash the filter cake with petroleum ether to obtain magnetic microcapsules coated with metal complexes with excellent dispersibility.

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Abstract

The invention relates to a preparation method of magnetic microcapsules coated with metal complex. The preparation method includes: adding gelatin into the aqueous solution of the metal complex, stirring to obtain a gel-metal complex aqueous solution, adding nano magnetic powder, and stirring and dispersing to obtain magnetic microcapsule wall material suspension; mixing liquid paraffin with emulsifier, performing water bath heating under a stirring condition to obtain an oil phase dispersion phase, adding into the wall material suspension, stirring, cooling to 1-10 DEG C in an ice bath manner, regulating pH to be 3, dropwise adding the aqueous solution of glutaraldehyde under a stirring condition to perform crosslinking, and performing suction filtration and washing to obtain the magnetic microcapsules coated with the metal complex. The preparation method is simple, practicable, few in influence factors, and high in potential and application value in the treatment of organic matter in environment wastewater.

Description

technical field [0001] The invention belongs to the field of metal complex microcapsule preparation, in particular to a method for preparing magnetic microcapsules coated with metal complexes. Background technique [0002] my country's fresh water resources are scarce, water pollution is serious, and the pollution components in environmental wastewater are complex. The pollution of dyes, antibiotics, and pesticides in water is serious, which will seriously affect people's production and life. [0003] Complex catalysts are widely used in various homogeneous and heterogeneous catalytic systems due to their high catalytic performance. However, in the process of catalytic degradation of wastewater treatment, since homogeneous complex catalysts often contain heavy metal elements, complex catalysts Discharge of treated wastewater into the environment will cause secondary pollution to the environment. Therefore, it is particularly important to find a controllable loading method f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/28C02F1/00B01J20/30B01J20/28B01J13/02C02F101/30C02F101/32C02F103/34
CPCC02F1/28B01J13/02B01J20/28009B01J20/30B01J31/22B01J2531/845C02F1/00C02F2101/306C02F2101/308C02F2101/32C02F2103/343
Inventor 毛志平张从聪谢汝义陈诚张琳萍徐红钟毅隋晓峰
Owner DONGHUA UNIV
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