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Titanium modified Fe3O4 magnetic nano-particle, preparation method and application thereof

A magnetic nanoparticle modification technology, applied in chemical instruments and methods, water/sludge/sewage treatment, metal/metal oxide/metal hydroxide catalysts, etc. Waste and other problems, to achieve the effect of low equipment requirements, low consumption, and serious waste of raw materials

Inactive Publication Date: 2019-08-02
WUHAN INSTITUTE OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Artificially synthesized titanium-doped Fe 3 o 4 At present, all magnetic nanoparticles use water as the solvent, and the following problems exist in the aqueous phase synthesis: both the titanium source and the iron source need to be dissolved in HCl solution (pH2 It is carried out under protection, so the operation is complicated, the requirements for equipment are high, the waste of raw materials is serious, and there is a lot of waste liquid

Method used

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  • Titanium modified Fe3O4 magnetic nano-particle, preparation method and application thereof
  • Titanium modified Fe3O4 magnetic nano-particle, preparation method and application thereof
  • Titanium modified Fe3O4 magnetic nano-particle, preparation method and application thereof

Examples

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Embodiment 1

[0033] A kind of titanium modified Fe 3 o 4 A method for preparing magnetic nanoparticles, comprising the following steps:

[0034] 1) Weigh 5.586g (0.04mol) of choline chloride and 4.804g of urea (0.08mol) into a 60mL reaction kettle, stir at 50°C until the solid mixture turns into a liquid, and obtain the choline chloride-urea eutectic solvent.

[0035] 2) Add 1.668g (0.0060mol) FeSO to the choline chloride-urea deep eutectic solvent prepared in step 1) 4 ·7H 2 O and 0.584g (0.0104mol) KOH and stirred for 30min, then added 0.408g (0.0012mol) n-butyl titanate and stirred for 5min, finally added 0.420g (0.0075mol) KOH, stirred at 80°C for 30min, then put the reaction kettle Put it in an oven at 110°C for 4 hours to obtain solid particles, centrifuge, wash with distilled water (3×20mL) and ethanol (1×20mL), and dry in air to obtain the product titanium-modified Fe 3 o 4 magnetic nanoparticles.

[0036] The product obtained in this embodiment titanium modified Fe 3 o 4 ...

Embodiment 2

[0042] A kind of titanium modified Fe 3 o 4 A method for preparing magnetic nanoparticles, comprising the following steps:

[0043] 1) Weigh 5.586g (0.04mol) of choline chloride and 4.804g (0.08mol) of urea into a 60mL reaction kettle, stir at 50°C until the solid mixture turns into a liquid, and obtain the choline chloride-urea eutectic solvent.

[0044] 2) Add 1.668g (0.0060mol) FeSO to the choline chloride-urea deep eutectic solvent prepared in step 1) 4 ·7H 2 O and 0.584g (0.0104mol) KOH and stirred for 30min, then added 0.050g (0.00015mol) n-butyl titanate and stirred for 5min, finally added 0.420g (0.0075mol) KOH, stirred at 80°C for 30min, then put the reaction kettle Put it in an oven at 110°C for 4 hours to obtain solid particles, which were centrifuged, washed with distilled water (3×20 mL) and ethanol (1×20 mL), and dried in air to obtain the product.

Embodiment 3

[0046] A kind of titanium modified Fe 3 o 4 A method for preparing magnetic nanoparticles, comprising the following steps:

[0047] 1) Weigh 5.586g (0.04mol) of choline chloride and 4.804g (0.08mol) of urea in a 60mL reactor, and stir at 50°C until the solid mixture turns into a liquid to obtain the choline chloride-urea eutectic solvent.

[0048] 2) Add 1.668g (0.0060mol) FeSO to the choline chloride-urea deep eutectic solvent prepared in step 1) successively 4 ·7H 2 O and 0.584g (0.0104mol) KOH and stirred for 30min, then added 4.080g (0.012mol) of n-butyl titanate and stirred for 5min, finally added 0.420g (0.0075mol) KOH, stirred at 80°C for 30min, then put the reaction kettle Put it in an oven at 110°C for 4 hours to obtain solid particles, which were centrifuged, washed with distilled water (3×20 mL) and ethanol (1×20 mL), and dried in air to obtain the product.

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Abstract

The invention provides a titanium modified Fe3O4 magnetic nano-particle, a preparation method and the application thereof. The preparation method specifically comprises the following steps: in a eutecticevaporate solvent of choline chloride and urea, taking ferrite as an iron source, tetrabutyl titanate as a titanium source and air as an oxidizing agent, and using a precipitation oxidization process to synthesize the titanium modified Fe3O4 magnetic nano-particle in one step. According to the preparation method provided by the invention, the obtained material has excellent catalytic degradation capacity (for example, under the conditions of room temperature and neutral pH, the color removal rate for a 0.01 mmol / L methylene blue solution within 2h reaching 93.8%, and the removal rate for a20 mg / L Ciprofloxacin solution reaching 96.5%) for organic waste water, is easy for magnetic separation recycle and stable in reuse performance, and is a novel magnetic environmentally-friendly material with low cost, quick and convenient operation, obvious effect and wide application prospect.

Description

technical field [0001] The invention belongs to the field of synthesis of magnetic functional materials and application of sewage treatment, in particular to a titanium-modified Fe 3 o 4 Magnetic nanoparticles and their preparation methods and applications. Background technique [0002] Organic wastewater is a serious threat to human health and ecosystems. There are many kinds of organic pollutants (such as organic dyes, antibiotics, etc.), which are difficult to completely remove by conventional water treatment technologies (such as filtration, adsorption, coagulation, biodegradation, etc.), while advanced oxidation technologies represented by Fenton oxidation have applicable It is a more economical and effective method for the treatment of organic wastewater due to its advantages of wide reactivity and thorough degradation. However, the homogeneous Fenton oxidation technology requires pH ~ 3, and the secondary pollution of iron sludge after the reaction limits its popul...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/745C02F1/74C02F101/30C02F101/38
CPCB01J23/745C02F1/74C02F2305/026C02F2101/38C02F2101/308C02F2101/40B01J35/23B01J35/33
Inventor 陈逢喜张家维
Owner WUHAN INSTITUTE OF TECHNOLOGY
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