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Method for regulating and controlling FeS2/reduced graphene oxide compact assembly structure

An assembly structure, graphene technology, applied in graphene, chemical instruments and methods, separation methods, etc., can solve the problem of limiting ion rapid transmission, and achieve the effect of adjustable shape, controllable structure, and simple operation

Pending Publication Date: 2020-12-11
ZHEJIANG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the capillary shrinkage strategy can increase the density of carbon nanomaterials, its pore structure is mainly micropores, which greatly limits the rapid transport of ions as an electrode skeleton.

Method used

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  • Method for regulating and controlling FeS2/reduced graphene oxide compact assembly structure
  • Method for regulating and controlling FeS2/reduced graphene oxide compact assembly structure
  • Method for regulating and controlling FeS2/reduced graphene oxide compact assembly structure

Examples

Experimental program
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Effect test

Embodiment 1

[0025] A regulatory FeS 2 A method for reducing graphene oxide dense assembly structure, comprising the following steps:

[0026] (1) Preparation of Mil88 powder: Add 100 ml DMF to a 250 ml beaker, dissolve 2.43 g anhydrous ferric chloride and 1.66 g terephthalic acid in DMF, stir until completely dissolved, and place in a 100 °C In an oil bath, let stand at constant temperature for 12 hours. After the reaction, wash with ethanol for 3 times, and dry the product in a vacuum oven at 60°C for 24 hours to obtain Mil88 powder;

[0027] (2) Preparation of Mil88 / GO / S powder: Add 500 mg of Mil88 powder and 1500 mg of sulfur powder prepared in step (1) into a 20 ml glass bottle, and then add 10 ml of graphene oxide GO (the mass of GO powder is 100 mg) dispersion liquid, stirred well, and then dried in a vacuum oven at 60 °C for 24 h to obtain Mil88 / GO / S powder;

[0028] (3) Dense FeS 2 / Preparation of reduced graphene oxide: add 100 mg of Mil88 / GO / S powder to the downstream porcel...

Embodiment 2

[0032] A regulatory FeS 2 A method for reducing graphene oxide dense assembly structure, comprising the following steps:

[0033] (1) Preparation of Mil88 powder: Add 100 ml DMF to a 250 ml beaker, dissolve 0.2 g anhydrous ferric chloride and 0.8 g terephthalic acid in DMF, stir well until completely dissolved, and place in a 60 °C In an oil bath, stand at constant temperature for 13 h. After the reaction, wash with ethanol for 3 times, and dry the product in a vacuum oven at 60 °C for 24 h to obtain Mil88 powder;

[0034] (2) Preparation of Mil88 / GO / S powder: Add 400 mg of Mil88 powder and 1000 mg of sulfur powder prepared in step (1) into a 20 ml glass bottle, and then add 25 ml of graphene oxide GO (the mass of GO powder is 200 mg) dispersion liquid, stirred well, and then dried in a vacuum oven at 50 °C for 24 h to obtain Mil88 / GO / S powder;

[0035] (3) Dense FeS 2 / Preparation of reduced graphene oxide: add 100 mg of Mil88 / GO / S powder to the downstream porcelain boat,...

Embodiment 3

[0037] A regulatory FeS 2 A method for reducing graphene oxide dense assembly structure, comprising the following steps:

[0038] (1) Preparation of Mil88 powder: Add 100 ml DMF to a 250 ml beaker, dissolve 3.5 g anhydrous ferric chloride and 0.7 g terephthalic acid in DMF, stir until completely dissolved, and place in a 120 °C In an oil bath, stand at constant temperature for 11 h. After the reaction, wash with ethanol for 3 times, and dry the product in a vacuum oven at 60 °C for 24 h to obtain Mil88 powder;

[0039] (2) Preparation of Mil88 / GO / S powder: Add 2000 mg of Mil88 powder and 5000 mg of sulfur powder prepared in step (1) into a 20 ml glass bottle, and then add 20 ml of graphene oxide GO (the mass of GO powder is 300 mg) dispersion liquid, stirred well, and then dried in a vacuum oven at 70 °C for 24 h to obtain Mil88 / GO / S powder;

[0040] (3) Dense FeS 2 / Preparation of reduced graphene oxide: add 100 mg of Mil88 / GO / S powder to the downstream porcelain boat, ad...

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Abstract

The invention relates to the field of composite material preparation, and provides a method for regulating and controlling a FeS2 / reduced graphene oxide compact assembly structure in order to solve the problem that introduction of a Faraday capacitor material into graphene limits rapid ion transmission and the like. The method comprises the following steps of: (1) synthesis of a Mil88 metal organic framework; (2) preparation of Mil88 / GO / S powder; and (3) preparation of compact FeS2 / reduced graphene oxide. The preparation method is efficient and stable in process, simple in flow and capable ofeffectively saving energy, preparation of a compact FeS2 / reduced graphene oxide electrode can be achieved, meanwhile, a channel for rapid transmission of sodium ions is also considered, and thereforethe volume desalination capacity of the material is greatly improved; and the prepared compact FeS2 / reduced graphene oxide composite material shows excellent electrochemical activity and stability ina capacitive deionization technology under conventional conditions.

Description

technical field [0001] The invention relates to the field of composite material preparation, in particular to a method for regulating and controlling FeS 2 / A method for the reduction of densely assembled structures of graphene oxide (rGO). Background technique [0002] Capacitive deionization (CDI) is a new electroadsorption desalination technology based on the electrochemical double layer theory. Compared with traditional water treatment technology, CDI has a series of advantages such as low energy consumption, low cost, no pollution and simple operation. At present, CDI electrode materials mainly use carbon nanomaterials, such as activated carbon, reduced graphene oxide, carbon nanotubes, and carbon aerogels. An ideal CDI electrode material needs to have a reasonable pore structure, high specific surface area, excellent electrical conductivity, and good chemical stability. Compared with traditional carbon-based materials, graphene is considered to be an ideal CDI adsor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G49/12C01B32/19C02F1/469
CPCC01G49/12C01B32/19C02F1/4691C01P2004/03C01P2002/72
Inventor 曹澥宏高鑫隆施文慧毛静阮鹏超
Owner ZHEJIANG UNIV OF TECH
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