Magnetic layered double hydroxide-metal organic framework composite material as well as preparation method and application thereof

A metal-organic framework and double hydroxide technology, which is applied in the fields of alkali metal oxides/hydroxides, alkali metal compounds, chemical instruments and methods, etc., can solve the problems of cumbersome detection steps, low detection efficiency, long processing time, etc. problem, to achieve the effect of reducing experiment cost, fast magnetic separation, and reducing extraction time

Active Publication Date: 2020-12-22
NINGXIA MEDICAL UNIV
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Problems solved by technology

[0006] In view of this, the present invention provides a magnetic layered double hydroxide-metal organic framework composite material to solve the technical problems of cumbersome detection steps, long processing time and low detection efficiency of endocrine disrupting substances existing in the prior art

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  • Magnetic layered double hydroxide-metal organic framework composite material as well as preparation method and application thereof
  • Magnetic layered double hydroxide-metal organic framework composite material as well as preparation method and application thereof
  • Magnetic layered double hydroxide-metal organic framework composite material as well as preparation method and application thereof

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Embodiment Construction

[0042] The technical solutions and technical effects of the present invention will be further described in detail below in conjunction with the accompanying drawings of the present invention.

[0043] Please see figure 1 , in a specific embodiment, a magnetic layered double hydroxide-metal organic framework composite material has the following structure: Fe 3 o 4 @ZnAl-LDH / ZIF-8;

[0044] Among them, @ represents the core structure, the front of @ is the core layer, and the back of @ is the shell layer; ZnAl-LDH represents a layered double metal hydroxide mainly composed of Zn and Al, and ZIF-8 represents a zeolite imidazolate framework material -8.

[0045] Such as figure 2 As shown, the Fe 3 o 4 (a), Fe 3 o 4 @ZnAl-LDH(b) and Fe 3 o 4 FT-IR spectrum of @ZnAl-LDH@ZIF-8(c), in spectrum (a), 594cm -1 A broad Fe-O characteristic absorption peak was observed at , indicating the existence of magnetic particles; in the spectrum (b), 3453cm -1 The absorption peaks that ap...

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Abstract

The invention provides a magnetic layered double hydroxide-metal organic framework composite material as well as a preparation method and application thereof, belonging to the technical field of composite materials. The structure of the magnetic layered double hydroxide-metal organic framework composite material is Fe3O4@ZnAl-LDH/ZIF-8. The preparation method comprises the following steps: preparing Fe3O4@ZnAl-LDH by adopting a coprecipitation method, and generating ZIF in situ on the surface of Fe3O4@ZnAlLDH by adopting a solvothermal method to prepare the Fe3O4@ZnAl-LDH/ZIF-8 composite material. The magnetic layered double hydroxide metal-organic framework composite material is applied to the field of micro-extraction, so rapid magnetic separation can be achieved, the magnetic layered double hydroxide metal-organic framework composite material can be recycled, extraction time is shortened, and experiment cost is reduced. Meanwhile, through hybrid ZIF-8, the specific surface area of ZnAl-LDH is increased, and the extraction efficiency of ZnAl-LDH on a target compound is greatly improved. The composite material can sensitively, simply, conveniently and quickly detect target components, can meet analysis requirements on EDCs in milk samples, and also shows good application potential in the aspect of trace organic pollutant analysis and determination.

Description

technical field [0001] The invention relates to the technical field of composite materials, in particular to a magnetic layered double hydroxide-metal organic framework composite material and its preparation method and application. Background technique [0002] Endocrine disrupting chemicals (EDCs) is a general term for a class of chemical substances that can disrupt the biological endocrine system and disrupt the homeostasis of the internal environment. EDCs mainly include steroid estrogens, industrial compounds (such as bisphenol A), phytoestrogens and metals, etc. Excessive EDCs will disturb the hormone balance in the body and seriously affect human health. In order to ensure food safety and human health, it is necessary to analyze and detect EDCs residues in food. [0003] In the prior art, for example, the Chinese invention patent with patent number 201810681946.7 provides a detection method for phenolic endocrine disrupting substances, including the following steps: s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/22B01J20/28B01J20/32B01D15/08G01N30/72G01N30/06G01N30/02
CPCB01J20/06B01J20/226B01J20/28009B01J20/3291B01D15/08G01N30/02G01N30/06G01N30/72G01N2030/062
Inventor 邸欣郭晓丽
Owner NINGXIA MEDICAL UNIV
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