Magnetic nanoparticle ferroferric oxide as well as preparation method and application thereof

A technology of magnetic nanoparticles and ferric oxide, applied in the field of nanomaterials, can solve the problems of no visible light catalytic performance, unfavorable industrialization, high preparation cost, and achieve excellent visible light catalytic performance and adsorption performance, not easy to agglomerate, and uniform in particle size. Effect

Inactive Publication Date: 2021-07-09
HANGZHOU NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the composite adsorption material of this invention only has adsorption performance, no visible light catalytic performance, and the preparation cost is high, and the operation is complicated, which is not conducive to industrialization

Method used

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  • Magnetic nanoparticle ferroferric oxide as well as preparation method and application thereof
  • Magnetic nanoparticle ferroferric oxide as well as preparation method and application thereof
  • Magnetic nanoparticle ferroferric oxide as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] FeSO 4 ·7H 2 O (0.40g) and FeCl 3 (0.09g) was dissolved in 5 ml of deionized water, the air was evacuated using a vacuum pump, and filled with argon; then stirred at room temperature for 10 min, and then slowly added dropwise excess NaOH (0.2 mol / L); when the solution turns into black particles, stop adding NaOH, and then stir for 30 min. The resulting Fe 3 o 4 The nanoparticles were washed 3 times with water and dried at 80°C for 6 h to obtain the magnetic nanoparticles Fe 3 o 4 .

[0034] The magnetic nanoparticle Fe that this embodiment makes 3 o 4在 Under the irradiation of visible light (the light source is a Newport 3A solar simulator), the rhodamine B aqueous solution and the strongly adsorbed Congo red and methyl blue aqueous solutions are efficiently degraded. 15 mg catalyst can degrade 10 ml of rhodamine B aqueous solution (10mg / L) under visible light irradiation for 2.5 h, and the degradation result is better; Congo red (10mg / L) and methylene blue (1...

Embodiment 2

[0036] FeSO 4 ·7H 2 O (0.60g) and FeCl 3 (0.06g) was dissolved in 10 ml deionized water, the air was evacuated using a vacuum pump, and filled with nitrogen; then stirred at room temperature for 10 min, and then slowly added dropwise excess NaOH (0.4mol / L). When all the solutions turn into black particles, stop adding NaOH, and then stir for 60 minutes; the Fe obtained at last 3 o 4 The nanoparticles were washed 4 times with water and dried at 80°C for 5 h to obtain the magnetic nanoparticles Fe 3 o 4 .

Embodiment 3

[0038] FeSO 4 ·7H 2 O (0.50g) and FeCl 3 (0.08g) was dissolved in 8 ml of deionized water, the air was evacuated using a vacuum pump, and filled with argon; then stirred at room temperature for 10 min, and then slowly added dropwise excess NaOH (0.3 mol / L). When all the solutions turned into black particles, the addition of NaOH was stopped, followed by stirring for 50 min. The resulting Fe 3 o 4 Nanoparticles were washed 3 times with water, and dried at 95°C for 5.5h to obtain magnetic nanoparticles Fe 3 o 4 .

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Abstract

The invention relates to the technical field of nano materials, in particular to magnetic nanoparticle ferroferric oxide as well as a preparation method and application thereof. The preparation method is characterized by comprising the following steps: dissolving FeSO<4>.7H2O and FeCl3 in deionized water, vacuumizing, filling inert gas, uniformly stirring, heating, then dropwise adding excessive alkali liquor until the solution is completely changed into black particles, uniformly stirring, and washing and drying the obtained precipitate to obtain the magnetic nanoparticle ferroferric oxide. The magnetic nanoparticles Fe3O4 are prepared by adopting a simple ion coprecipitation method, and the prepared magnetic nanoparticles Fe3O4 are uniform in particle size, not liable to agglomerate and excellent in visible light catalysis performance and adsorption performance; the prepared magnetic nanoparticle ferroferric oxide has a wide application prospect in visible light catalytic degradation of rhodamine B dye and adsorption degradation of Congo red and methyl blue dye.

Description

technical field [0001] The invention relates to the technical field of nanomaterials, in particular to a magnetic nanoparticle iron tetroxide (Fe 3 o 4 ) and its preparation method and application. Background technique [0002] Dyes refer to a class of organic compounds that can make other substances obtain bright and firm colors, and are essential substances in our daily life. However, once the dyes enter the environment, they will cause very huge pollution to it. Some of the dyes have certain toxicity and are harmful to the human body. The usual treatment methods include physical adsorption, electrochemical oxidation, etc., while photodegradable dyes have the advantages of high efficiency and cleanliness. [0003] Common catalysts for photodegradation are TiO 2 , but because its raw materials are expensive, toxic, and have a large band gap, it cannot make good use of the energy of visible light to catalyze the reaction. [0004] Chinese patent literature discloses "a ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G49/08B01J20/28B01J20/06B01J20/30B01J23/745C02F1/30C02F1/28B82Y30/00B82Y40/00C02F101/34C02F101/38
CPCC01G49/08B01J20/28009B01J20/28007B82Y30/00B82Y40/00B01J20/06B01J23/745C02F1/30C02F1/281C02F2101/38C02F2101/40C02F2101/34C02F2305/10
Inventor 郑辉张路平韩维航沈圆芳
Owner HANGZHOU NORMAL UNIVERSITY
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