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High-magnetic heavy-metal ion adsorbent carrying conductive high molecules and preparation method thereof

A technology of conducting polymers and heavy metal ions, applied in non-metallic elements, chemical instruments and methods, adsorption water/sewage treatment, etc., can solve the problems of application limitation, inconvenient recycling, etc. Guaranteed effect of stability

Active Publication Date: 2010-05-19
NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although conductive polymer materials have excellent heavy metal ion adsorption properties, their applications are greatly limited due to the extremely inconvenient recycling.

Method used

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  • High-magnetic heavy-metal ion adsorbent carrying conductive high molecules and preparation method thereof
  • High-magnetic heavy-metal ion adsorbent carrying conductive high molecules and preparation method thereof
  • High-magnetic heavy-metal ion adsorbent carrying conductive high molecules and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0028] Weigh 1.5g of ferric chloride hexahydrate, 1g of polyethylene glycol 2000, and 3.6g of anhydrous sodium acetate and disperse them in 40ml of ethylene glycol, and stir vigorously for 60min. The precursor dispersion was transferred to a hydrothermal kettle, and the heating temperature was 200°C for 8 hours. ; Cool to room temperature, and through magnetic separation, the solvothermal product is washed with deionized water and absolute ethanol repeatedly 5 times. The solvothermal product was dried under vacuum at 80°C for 6h. Take 0.4 g of the above-mentioned dried terminal product and add it into 100 ml of isopropanol for dispersion, add 0.75 ml of ammonia water and 5.5 ml of deionized water at the same time, and stir vigorously for 30 min. 0.4 ml of tetrabutyl orthosilicate was added to the above dispersion, and then the entire hydrolysis reaction was carried out at 60° C. for 8 hours. The hydrolyzate was washed with water and alcohol for 5 times, and dried at 80° C. f...

Embodiment 2

[0036] Weigh 3g of ferric chloride hexahydrate, 5g of polyethylene glycol 2000, and 3.6g of anhydrous sodium acetate and disperse them in 40ml of ethylene glycol, and stir vigorously for 60min. The precursor dispersion was transferred to a hydrothermal kettle, and the heating temperature was 250° C. for 10 hours. The solvothermal product was repeatedly washed with deionized water and absolute ethanol 8 times. The solvothermal product was dried under vacuum at 80°C for 4 hours. Take 0.2 g of the above-mentioned dried terminal product and add it into 100 ml of isopropanol for dispersion, add 0.5 ml of ammonia water and 3 ml of deionized water at the same time, and stir vigorously for 30 min. 0.6 ml of tetrabutyl orthosilicate was added to the above dispersion, and then the entire hydrolysis reaction was carried out at 60° C. for 8 hours. The hydrolyzate was washed with water and alcohol for 8 times, and dried at 80° C. for 6 hours under vacuum condition. Add 2g of ferric chlo...

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Abstract

The invention discloses a high-magnetic heavy-metal ion adsorbent carrying conductive high molecules and a preparation method thereof. The adsorbent comprises high-magnetic microspheres carrying conductive high molecules, each of which comprises a Fe3O4 polycrystal sphere cluster, an amorphous SiO2 protective layer and a polypyrrole adsorption outer layer from inside to outside. The preparation method of the adsorbent is realized in a way that: carrying out a solvent thermal reduction reaction on soluble ferrites to obtain the Fe3O4 magnetic sphere cluster; carrying out the basic hydrolysis by using tetraethoxysilane to obtain the Fe3O4-SiO2 nuclear shell sphere cluster; and finally, carrying out the free radical polymerization reaction on the pyrrole monomers to obtain the Fe3O4-SiO2-polypyrrole functional particles. The heavy-metal ion adsorbent has the characteristics of stable property, high adsorption rate and reproducibility, has favorable adsorption and recovery properties on dichromic ions, and has the advantages of simple preparation process, low material price and no environmental pollution. Compared with the normal chemical absorbent, the product of the invention is convenient to use and achieves the effects of waste water treatment, pollution abatement and environment protection.

Description

technical field [0001] The invention relates to a magnetic-loaded conductive polymer adsorbent for separating and detecting heavy metal ions and a preparation method thereof, and relates to the technical fields of preparing functionalized polymer materials and treating and detecting sewage. Background technique [0002] Heavy metals generally exist widely in nature in natural concentrations. However, in recent decades, with the development of modern industry, human beings have increased mining, smelting, processing and commercial manufacturing activities of heavy metals, causing many heavy metals to enter the atmosphere, Water and soil environment, causing serious environmental pollution. At present, as one of the important pollution sources in the world, the harm of heavy metal ions such as chromium to human health is becoming more and more serious, and the treatment of heavy metal ions has attracted widespread attention. Numerous methods have been used to explore the reco...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/26B01J20/10B01J20/08B01J20/30C02F1/28C02F101/22
Inventor 程杨宋伟杰谭瑞琴赵宗山杨晔崔平
Owner NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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