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Fe(III)-Salen functionalized nano Fe3O4 composite material as well as preparation method and application thereof

A composite material and magnetic composite material technology, applied in Fe(III)‑Salen functionalized nano Fe3O4 composite material, preparation and application fields, can solve the problems of easy oxidative decomposition, TAML instability, etc., and achieve a wide range of pH application , Conducive to separation and recovery, the effect of easy availability of raw materials

Inactive Publication Date: 2017-08-04
NINGBO INST OF TECH ZHEJIANG UNIV ZHEJIANG
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Coilins et al. (Accounts Chemical Research, 2002, 35(9): 782–790.) systematically studied a non-porphyrin ring, non-phthalocyanine ring N-Fe coordination compound TAML, which can effectively activate H 2 o 2 , realize the rapid oxidation of trichlorophenol and pentachlorophenol, TAML has a high conversion number, showing superior photocatalytic activity, but unfortunately TAML itself is unstable and easily decomposed by oxidation, and the regeneration and separation of the catalyst remains a major challenge to overcome

Method used

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  • Fe(III)-Salen functionalized nano Fe3O4 composite material as well as preparation method and application thereof
  • Fe(III)-Salen functionalized nano Fe3O4 composite material as well as preparation method and application thereof
  • Fe(III)-Salen functionalized nano Fe3O4 composite material as well as preparation method and application thereof

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Embodiment 1

[0039] Weigh FeCl separately 3 ·6H 2 O and anhydrous sodium acetate were dissolved in ethylene glycol and stirred at room temperature for 10 min. Then ethylenediamine was added and stirred until a stable orange solution was formed. The reaction solution was transferred to a reaction kettle, and reacted at 180°C for 8h. After cooling, magnetically separated, washed with deionized water and ethanol three times each, until the pH value was 7, and vacuum-dried at 60°C for 12h to obtain NH 2 -nFe 3 o 4 .

[0040] Using methanol as solvent, add NH 2 -nFe 3 o 4 , ultrasonically disperse, add salicylaldehyde dropwise under stirring, react at room temperature for 2 h, magnetically separate, wash with deionized water and ethanol three times successively, until the pH value is 7, and vacuum dry at 60 °C for 12 h to obtain Salen functionalized nano-Fe 3 o 4 (nFe 3 o 4 @Salen).

[0041] nFe 3 o 4 @Salen is added to the methanol solution, ultrasonically dispersed, and slowly ad...

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Abstract

The invention discloses a Fe(III)-Salen functionalized nano Fe3O4 composite material as well as a preparation method and application thereof. The preparation method comprises the following steps: preparing an amino-functionalized nano Fe3O4 magnetic composite material (NH2-nFe3O4) by adopting a solvothermal method, condensing with o-hydroxy-containing substituted benzaldehyde so as to obtain Salen functionalized nano Fe3O4 (nFe3O4@Salen), and further complexing with Fe(III), thereby obtaining the nFe3O4@Fe(III)Salen composite material. The product obtained by the method disclosed by the invention is powdered and brown, and is uniform in particle size distribution and stable in property. NH2-nFe3O4 prepared by the solvothermal method overcomes the defect of agglomeration of a magnetic material solution, and the obtained material is high in dispersity and excellent in magnetic property; Salen obtained by condensing amino and o-hydroxy-containing substituted benzaldehyde is fast in reaction, readily available in raw materials and high in yield; the material is enriched in amino, hydroxyl and other functional groups; and due to the Fe(III) active center, a Fenton-like system is immobilized onto the magnetic Fe3O4 material, the composite material has a wide pH application range, dual functions of catalysis and magnetism of the material are realized, and separation and recovery of catalysts are promoted.

Description

technical field [0001] The invention relates to a kind of Fe(III)-Salen functionalized nano-Fe 3 o 4 Composite materials, preparation methods and application technologies, specifically Fe(III)-Salen functionalized nano-Fe 3 o 4 Composite material and preparation method thereof, and utilization of Fe(III)-Salen functionalized nanometer Fe of the present invention 3 o 4 The composite material is used as a catalyst to degrade new environmental pollutants such as chlorophenols and plasticizers in water, so as to achieve environmental protection and other purposes. Background technique [0002] Persistent environmental pollutants such as chlorophenols, phthalates and heavy metals are widely used in industrial and agricultural production. Trace amounts of these new environmental pollutants will be enriched in water, soil, animals and plants, difficult to degrade in the environment, interfere with the endocrine system of the human body, directly affect the metabolism of the hu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J31/28B01J31/22C02F1/72C02F101/36C02F101/34
Inventor 沈昊宇蒋琦姜哲昊郭素芳冯锦秀胡美琴董新艳
Owner NINGBO INST OF TECH ZHEJIANG UNIV ZHEJIANG
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