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Preparation method of graphene oxide skeleton composite membrane

A graphene skeleton, composite membrane technology, applied in chemical instruments and methods, separation methods, membrane technology and other directions, can solve the problems of limited adjustment of graphene oxide layer spacing, and achieve flexible adjustment of graphene layer spacing, simple method, high performance stable effect

Pending Publication Date: 2021-08-27
徐州禹慧环境科技研究院有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this method has limited adjustment of the interlayer spacing of graphene oxide.

Method used

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  • Preparation method of graphene oxide skeleton composite membrane
  • Preparation method of graphene oxide skeleton composite membrane
  • Preparation method of graphene oxide skeleton composite membrane

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] A kind of preparation method of graphene oxide framework composite film, its step comprises,

[0036] S1: Prepare graphene oxide suspension solution by Hummber method. The XY axis size of graphene oxide is 0.1-100 microns, the optimal size is 0.5-10 microns, and the Z-axis size is 1-1.5 nanometers. The concentration of graphene oxide suspension solution 0.5%;

[0037] S2: Synthesis of organometallic framework (MOF) nanoparticles with functional groups,

[0038] S21: Add 0.08 g of zirconium chloride, 0.062 g of aminoterephthalic acid and 0.7 ml of acetic acid into 20 ml of dimethylformamide solution;

[0039] S22: After mixing the above solution evenly, heat it to the set temperature (70-75°C) to react for a certain period of time, and control the particle size of the MOF nanoparticles by controlling the reaction time and temperature, and control the average particle size of the MOF nanoparticles to be 5 ±0.5nm;

[0040] S23: centrifuging the reacted solution to obtai...

Embodiment 2

[0061] A kind of preparation method of graphene oxide framework composite film, its step comprises,

[0062] S1: Prepare graphene oxide suspension solution by Hummber method. The XY axis size of graphene oxide is 0.1-100 microns, the optimal size is 0.5-10 microns, and the Z-axis size is 1-1.5 nanometers. The concentration of graphene oxide suspension solution 0.5%;

[0063] S2: Synthesis of organometallic framework (MOF) nanoparticles with functional groups,

[0064] S21: Add 0.08 g of zirconium chloride, 0.062 g of aminoterephthalic acid and 0.7 ml of acetic acid into 20 ml of dimethylformamide solution;

[0065] S22: After mixing the above solution evenly, heat it to a set temperature (120-125°C) and react for a certain period of time, and control the particle size of MOF nanoparticles by controlling the reaction time and temperature, and control the average particle size of MOF nanoparticles to 40 ~50nm;

[0066] S23: centrifuging the reacted solution to obtain MOF nano...

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Abstract

The invention belongs to the technical field of filter membrane preparation, and particularly relates to a preparation method of a graphene oxide skeleton composite membrane. The preparation method comprises the following steps: S1, preparing a graphene oxide suspension solution by using a Hummber method; S2, synthesizing organic metal framework (MOF) nanoparticles with functional groups; S3, mixing the MOF nanoparticles into the graphene oxide suspension solution, carrying out ultrasonic dispersion, and carrying out a heating reaction so as to form a GO-MOF skeletal structure suspension; and S4 preparing the GO-MOF skeleton composite membrane by using a pressure filtration method. According to the preparation method, the particle size of the MOF nanoparticles can be controlled by controlling the reaction time and temperature of the MOF nanoparticles, so the skeleton structure of the graphene oxide film can be controlled and adjusted; in the preparation process of the graphene oxide membrane, the interlayer spacing of graphene is flexibly adjusted; the performance of the membrane is stable, and the method is simple; and the graphene oxide membrane prepared by using the method can be widely applied to membrane separation processes such as nanofiltration, pervaporation and gas separation.

Description

technical field [0001] The invention belongs to the technical field of filter membrane preparation, and in particular relates to a preparation method of a graphene oxide skeleton composite membrane. Background technique [0002] Graphene is a sp 2 The hybrid-connected carbon atoms are densely packed into a new material with a single-layer two-dimensional honeycomb lattice structure, which has excellent thermal, electrical, and mechanical properties, and has important application prospects in environmental protection, energy, biomedicine, and drug delivery. Considered a future revolutionary material. The oxidized form of graphene, namely graphene oxide (GO), has excellent chemical properties and solution dispersibility due to the abundant oxygen-rich functional groups on the surface of the nanosheets. Therefore, graphene oxide has been widely used in the fields of catalysis, gas storage, electrochemistry, and membrane separation. In 2012, Nair et al. prepared a graphene ox...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D71/76B01D71/02B01D69/12B01D67/00B01D61/36B01D61/02B01D53/22
CPCB01D71/021B01D69/12B01D71/76B01D67/0079B01D61/027B01D61/362B01D53/228
Inventor 唐宇攀宋岩伟鲍士彪
Owner 徐州禹慧环境科技研究院有限公司
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