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A kind of imidazole and chitosan functionalized magnetic particle and its preparation method and application

A technology of magnetic particles and chitosan, applied in chemical instruments and methods, other chemical processes, adsorption water/sewage treatment, etc., can solve the problems of unreported literature, poor selectivity, and few functional groups, and achieve cost reduction, Short time consumption and improved efficiency

Active Publication Date: 2015-12-23
HUNAN NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Among the commonly used adsorption materials for removing sulfonic acid dyes in wastewater, the selectivity is poor, and the functional groups are relatively few and single.
According to the literature we retrieved, there are no literature reports on the preparation of magnetic particles co-functionalized with imidazole and chitosan, and their application to the removal and recovery of three sulfonic acid dyes, MO, CR, and ACBK in water.

Method used

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  • A kind of imidazole and chitosan functionalized magnetic particle and its preparation method and application
  • A kind of imidazole and chitosan functionalized magnetic particle and its preparation method and application
  • A kind of imidazole and chitosan functionalized magnetic particle and its preparation method and application

Examples

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Effect test

Embodiment 1

[0029] The imidazole and chitosan functionalized magnetic particles Fe of this example 3 O 4 The preparation method of OACTS-g-IMZ includes the following steps:

[0030] (1) Fe 3 O 4 The synthesis method of OA: at 25 ℃, 5.8g Fe (NO 3 ) 9H 2 O and 2.3g FeSO 4 ·6H 2 0 was added to the three-necked flask, 100 mL of secondary distilled water deoxygenated with nitrogen for 30 min was added, mechanically stirred for 5 min under nitrogen protection, 10 mL of concentrated ammonia water was added to the three-necked flask, mechanically stirred for 10 min, 1.0 g of oleic acid was added, and mechanically stirred 1h. Removed, washed to neutrality to give Fe 3 O 4 OA, to be used.

[0031] The molar ratio of the trivalent iron salt and the divalent iron salt is 1:0.5.

[0032] (2) Fe 3 O 4 Synthesis method of OACTS-g-IMZ; 3 O 4 The OA magnetic particles were redispersed in 50 mL of double distilled water, transferred to a three-necked flask, and mechanically stirred at room t...

Embodiment 2

[0045] Chitosan functionalized magnetic particles Fe of this embodiment 3 O 4 The preparation method of OACTS comprises the following steps:

[0046] (1) Fe 3 O 4 The synthesis method of OA: at 25 ℃, 5.8g Fe (NO 3 ) 9H 2 O and 2.3g FeSO 4 ·6H 2 0 was added to the three-necked flask, 100 mL of secondary distilled water deoxygenated with nitrogen for 30 min was added, mechanically stirred for 5 min under nitrogen protection, 10 mL of concentrated ammonia water was added to the three-necked flask, mechanically stirred for 10 min, 1.0 g of oleic acid was added, and mechanically stirred 1h. Removed, washed to neutrality to give Fe 3 O 4 OA, to be used.

[0047] The molar ratio of the trivalent iron salt and the divalent iron salt is 1:0.5.

[0048] (2) Fe 3 O 4 Synthesis method of OACTS; 3 O 4 The OA magnetic particles were re-dispersed in 50 mL of double distilled water, transferred to a three-necked flask, and mechanically stirred at room temperature for 10 min; 50...

Embodiment 3

[0056] The preparation method of the imidazole and chitosan functionalized magnetic particles of the present embodiment includes the following steps:

[0057] (1) Fe 3 O 4 The synthesis method of OA: at 25 ℃, 5.8g Fe (NO 3 ) 9H 2 O and 2.3g FeSO 4 ·6H 2 0 was added to the three-necked flask, 100 mL of secondary distilled water deoxygenated with nitrogen for 30 min was added, mechanically stirred for 5 min under nitrogen protection, 10 mL of concentrated ammonia water was added to the three-necked flask, mechanically stirred for 10 min, 1.0 g of oleic acid was added, and mechanically stirred 1h. Removed, washed to neutrality to give Fe 3 O 4 OA, to be used.

[0058]The molar ratio of the trivalent iron salt and the divalent iron salt is 1:0.5.

[0059] (2) Fe 3 O 4 Synthesis method of OACTS-g-IMZ; 3 O 4 The OA magnetic particles were re-dispersed in 50 mL of double distilled water, transferred into a three-necked flask, and mechanically stirred for 10 min at room t...

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Abstract

The invention discloses an imidazole and chitosan functional magnetic particle, as well as a preparation method and an application thereof. The imidazole and chitosan functional magnetic particle is a Fe3O4 magnetic particle jointly modified by imidazole and chitosan, and is represented as Fe3O4@OA@CTS-g-IMZ, wherein in the formula, the OA represents oleic acid, the CTS represents chitosan, and the IMZ represents imidazole. The method provided by the invention is convenient and economical in synthetic process and provides the preparation method and the application of the imidazole and chitosan jointly-modified magnetic particle which is more in functional group, and good in selectivity and has the environment-friendly effect, after the imidazole and chitosan functional magnetic particle disclosed by the invention is used, the sulfoacid dye in a water sample can be effectively, simply, quickly and innocuously removed.

Description

technical field [0001] The invention relates to a preparation method and application of functionalized magnetic particles, in particular to a magnetic particle functionalized with imidazole and chitosan and its preparation method and application. Background technique [0002] At present, the main methods for removing sulfonic acid dyes from wastewater include chemical oxidation, membrane separation, flocculation, adsorption, and microbial degradation. Low rate, unsatisfactory economic benefit, cumbersome operation and secondary pollution. [0003] Functionalized magnetic particles have good selectivity due to their surface functionalization, and can be rapidly oriented and separated in a magnetic field. Therefore, they have broad application prospects in the removal of sulfonic acid dyes in wastewater. [0004] At present, the research work on adsorbent materials for removing dyes from wastewater has achieved certain results. 201210121603.8 disclosed on August 15, 2012 a d...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L5/08B01J20/24B01J20/30C02F1/28
Inventor 马铭张君芳邓晓庆石慧蒋力维
Owner HUNAN NORMAL UNIVERSITY