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Medium confinement type biomimetic catalytic membrane, and preparation method and application thereof

A biomimetic catalysis and mediator technology, applied in the field of catalytic membranes, can solve problems such as poor stability and low efficiency

Pending Publication Date: 2020-10-23
烟台中科恩吉科创新产业园管理有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] Aiming at the problems of low efficiency and poor stability in the removal of micro-pollutants by bionic technology, the present invention provides a mediator-confined biomimetic catalytic membrane, which consists of a substrate, a bionic material and a mediator Composition of confined enzyme-like metal-organic frameworks (MOFs)

Method used

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  • Medium confinement type biomimetic catalytic membrane, and preparation method and application thereof
  • Medium confinement type biomimetic catalytic membrane, and preparation method and application thereof
  • Medium confinement type biomimetic catalytic membrane, and preparation method and application thereof

Examples

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Embodiment 1

[0032]A mediator-confined biomimetic catalytic membrane, comprising a stainless steel wire mesh substrate, a polydopamine biomimetic coating attached to the substrate, and a confinement-type imitative enzyme MIL-101 (Fe) particle layer attached to the biomimetic coating. The preparation method is:

[0033] (1) Soak the stainless steel wire mesh in ethanol, ultrasonically clean it for 20 minutes, and after natural drying, soak the stainless steel wire mesh in dopamine hydrochloride solution, wherein the mass concentration of dopamine is 2 mg / mL, the pH of the solution is 8.5, and the buffer is 20mmol / L Tris-HCl was shaken and coated at 30°C for 10h, washed and dried, and a stainless steel wire mesh modified with polydopamine biomimetic coating was prepared;

[0034] (2) The stainless steel wire mesh modified with polydopamine biomimetic coating was added into the N,N - In dimethylformamide solution, the concentration of ferric chloride hexahydrate is 166mmol / L, the concentrati...

Embodiment 2

[0038] A mediator-confined biomimetic catalytic membrane, including a polytetrafluoroethylene membrane substrate, a polydopamine-polyethyleneimine biomimetic coating attached to the substrate, and a confinement-type enzyme NH attached to the biomimetic coating 2 -MIL-101 (Fe) granular layer, its preparation method is:

[0039] (1) Soak the polytetrafluoroethylene membrane in ethanol, ultrasonically clean it for 20 minutes, and after natural drying, soak the polytetrafluoroethylene membrane in dopamine hydrochloride-polyethyleneimine solution, wherein the mass concentration of dopamine is 2mg / mL , the mass concentration of polyethyleneimine is 2mg / mL, the molecular weight is 600Da, the pH of the solution is 8.5, and the buffer solution is 20mmol / L Tris-HCl. Shake the coating at 30°C for 10h, wash and dry, and prepare PTFE membrane modified with polydopamine-polyethyleneimine biomimetic coating;

[0040] (2) The polytetrafluoroethylene membrane modified by polydopamine-polyethy...

Embodiment 3

[0044] A mediator-confined biomimetic catalytic membrane, including a polyester film substrate, a polydopamine-3-aminopropyltriethoxysilane biomimetic coating attached to the substrate, and a confinement-type biomimetic coating attached to the biomimetic coating. Enzyme MIL-101 (Fe) granular layer, its preparation method is:

[0045] (1) Soak the PET film in ethanol, ultrasonically clean it for 20 minutes, and after natural drying, soak the polyester film in dopamine hydrochloride-3-aminopropyltriethoxysilane solution, wherein the mass concentration of dopamine is 2mg / mL, the mass concentration of 3-aminopropyltriethoxysilane is 8mg / mL, the pH of the solution is 8.5, and the buffer is 20mmol / L Tris-HCl), shake the coating at 30°C for 10h, wash and dry Finally, a PET film modified with polydopamine-3-aminopropyltriethoxysilane biomimetic coating was prepared;

[0046] (2) The PET film modified with polydopamine-3-aminopropyltriethoxysilane biomimetic coating was added with me...

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Abstract

The invention discloses a medium confinement type biomimetic catalytic membrane. The membrane is composed of a substrate, a biomimetic material and medium confinement type mimetic enzyme MOFs particles, the biomimetic material is attached to the substrate to form a biomimetic coating, and the medium confinement type mimetic enzyme MOFs particles are attached to the biomimetic coating to form a medium confinement type mimetic enzyme MOFs particle layer. The medium confinement type biomimetic catalytic membrane has the beneficial effects that organic micro-pollutants can be rapidly removed by virtue of the strong oxidation capability of fixed medium free radicals and the adsorption capability of MOFs, and the medium confinement type biomimetic catalytic membrane has relatively good removal efficiency on aflatoxin, bisphenol A and diclofenac.

Description

technical field [0001] The invention relates to the technical field of catalytic membranes, in particular to a mediator-confined biomimetic catalytic membrane, its preparation method and application. Background technique [0002] Bionic technology is a technology that humans learn from nature and use artificial synthetic materials to imitate the complex physical and chemical processes of organisms at the macro or micro level, with the characteristics of high efficiency, convenience, and greenness. Among them, the biomimetic catalytic membrane is an artificial functional membrane developed by imitating the function of biological membranes. It can not only imitate the selective permeability of biological membranes, but also imitate the reactivity of biologically active substances (such as enzymes, etc.), which can significantly improve the performance of membranes. The ability of a process to separate, transform, and remove a specific substance and its own stability. Therefor...

Claims

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Application Information

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IPC IPC(8): B01J31/22B01J35/06C02F1/72C02F101/34C02F101/38C02F101/36
CPCB01J31/1691C02F1/725C02F2101/34C02F2101/38C02F2101/36B01J2231/70B01J2531/842B01J35/59
Inventor 罗建泉任重远陈向荣杨运国冯世超万印华
Owner 烟台中科恩吉科创新产业园管理有限公司
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