Preparation method of magnetic molecularly imprinted material

A magnetic molecular imprinting and magnetic technology, applied in chemical instruments and methods, alkali metal oxides/hydroxides, inorganic chemistry, etc. problem, to achieve the effect of good selectivity, high selection and recognition ability, and easy operation

Inactive Publication Date: 2017-09-26
CHINA AGRI UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] At present, relevant research work has reported that using magnetic nano-ferric iron tetroxide as the carrier, bisphenol A, diethylstilbestrol, estradiol and other exogenous chemical substances that can affect the human body as template molecules, the prepared Materials that can achieve fast and effective solid-liquid

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  • Preparation method of magnetic molecularly imprinted material
  • Preparation method of magnetic molecularly imprinted material
  • Preparation method of magnetic molecularly imprinted material

Examples

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Example Embodiment

[0034] Example 1

[0035] The preparation method of the magnetic molecular imprinting material for rapidly enriching and separating textile carcinogenic aromatic amines of the present invention takes 4,4'-diaminodiphenylmethane as an example

[0036] The synthesis schematic diagram of the magnetic molecular imprinting material for rapid enrichment and separation of textile carcinogenic aromatic amines provided by the present invention is as follows figure 2 As shown, the specific preparation method can be divided into the following four steps:

[0037] First, prepare Fe by solvothermal method 3 O 4 Nanoparticles: 2.7g FeCl 3 ·6H 2 O and 7.2g NaAc were dissolved in 100ml of ethylene glycol and stirred vigorously until a uniform yellow solution was formed. The solution was transferred to a closed polytetrafluoroethylene lined autoclave and reacted at 200℃ for 8h. After the reaction is completed, the product is naturally cooled to room temperature, separated under the action of an exte...

Example Embodiment

[0041] Example 2

[0042] The preparation method of the magnetic molecular imprinting material for rapid enrichment and separation of carcinogenic aromatic amines in textiles of the present invention takes 4,4'-methylene-bis-(2-chloroaniline) as an example

[0043] The specific preparation method can be divided into the following four steps:

[0044] First, prepare Fe by solvothermal method 3 O 4 Nanoparticles: 2.7g FeCl 3 ·6H 2 O and 7.2g NaAc were dissolved in 100ml ethylene glycol and stirred vigorously until a uniform yellow solution was formed. The solution was transferred to a closed polytetrafluoroethylene-lined autoclave and reacted at 200°C for 8h. After the reaction is completed, the product is naturally cooled to room temperature, separated under the action of an external magnetic field, and the product is repeatedly washed with ethanol, and dried under vacuum at 60°C to obtain Fe 3 O 4 Nanoparticles.

[0045] Second, the Fe 3 O 4 The nanoparticles are coated with silica ge...

Example Embodiment

[0048] Example 3

[0049] Structural characterization of magnetic molecular imprinting material for rapid screening of textile carcinogenic aromatic amines

[0050] This example is to characterize the structure of the magnetic molecularly imprinted material prepared in Example 2, and the details are as follows:

[0051] 1. Fourier infrared spectrum

[0052] Fourier transform infrared spectrometer was used to characterize the magnetic nanoparticles, magnetic silica gel nanoparticles, vinyl modified magnetic silica gel nanoparticles and magnetic molecularly imprinted polymers, and the potassium bromide tablet method was used for sample preparation.

[0053] From figure 2 It can be seen that Fe 3 O 4 After the nanoparticles are coated with silica gel, 1450cm -1 The peak disappeared at 1662cm -1 The characteristic peak appearing at is the bending vibration peak of H-O-H, 1078cm -1 Symmetric stretching vibration absorption peak of Si-O-Si at 780cm -1 The weak absorption is the anti-symmet...

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Abstract

The invention discloses a preparation method of a magnetic molecularly imprinted material and belongs to the field of chemical analysis and testing. The preparation method comprises the following steps: firstly, preparing magnetic nanoparticles with surfaces covered with silica gel; carrying out modification on the surfaces of the magnetic nanoparticles by utilizing a silica gel modifier; finally, preparing the magnetic molecularly imprinted material by adopting surface imprinting and thermal initiation manners. The magnetic molecularly imprinted material disclosed by the invention has a rapid enrichment and separation speed and good selectivity in analysis and detection on cancer-causing aromatic amine in textiles; the magnetic molecularly imprinted material can be used for specifically recognizing a target compound, has good stability and can be repeatedly used; the cost is relatively low so that the magnetic molecularly imprinted material can be put into industrial production.

Description

Technical field: [0001] The invention belongs to the field of chemical analysis and testing, and relates to a preparation method of a magnetic molecular imprinted material. Background technique: [0002] Azo compounds are the most diverse and widely used synthetic dyes. Studies have shown that many azo compounds have carcinogenic effects. For example, cream yellow used for margarine coloring can induce liver cancer, and methyl red as an indicator can cause cancer. Cause bladder and breast tumors. Aromatic amines in textiles often have false positives in traditional detection methods, which have a great impact on the detection results. [0003] Molecularly imprinted preparation technology (also known as molecularly imprinted) (molecularly imprinting techniques, MIT) refers to the preparation of polymers that match the template molecules in terms of spatial structure and binding sites. Interdisciplinary subjects such as chemistry and materials chemistry. In short, molecular...

Claims

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Application Information

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IPC IPC(8): C08F226/06C08F222/14C08F2/44C08K9/06C08K9/12C08K3/22C08K3/36B01J20/28B01J20/26B01J20/30
CPCB01J20/06B01J20/268B01J20/28009C08F2/44C08F226/06C08K3/22C08K3/36C08K9/06C08K9/12C08K2003/2272C08K2003/2275C08K2201/01C08K2201/011C08F222/102
Inventor 孙英于晓璐刘航刁剑雄王寅超李远瞩
Owner CHINA AGRI UNIV
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