A kind of preparation method of Prussian blue/graphene/carbon fiber composite material

A technology of Prussian blue and composite materials, which is applied in the field of preparation of Prussian blue/graphene/carbon fiber composite materials, can solve the problems of high surface inertness and lack of chemically active functional groups, etc. The effect of large specific surface area

Active Publication Date: 2017-11-07
HEFEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition to high adsorption and elution rates, good physical and chemical stability, the carbon fiber is also easy to handle and separate, but its surface is inert and lacks chemically active functional groups.

Method used

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  • A kind of preparation method of Prussian blue/graphene/carbon fiber composite material
  • A kind of preparation method of Prussian blue/graphene/carbon fiber composite material
  • A kind of preparation method of Prussian blue/graphene/carbon fiber composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] 1. Preparation of carbon fiber / graphene composite support (CFs / GNs)

[0043] ① Preparation of aminated graphene: Add 0.3g graphene oxide into 300mL absolute ethanol, mix well to make graphene oxide suspension, add 2g 1-ethyl-(3-dimethylaminopropyl) carbon Diimine and 200 g of dimethylethylenediamine were reacted at 70° C. for 1 hour to generate aminated graphene (GN).

[0044] ②Preparation of carboxylated carbon fiber: take conductive polyacrylonitrile carbon fiber as the working electrode, immerse it in 9.8g / L sulfuric acid solution, and anodize it at 1.8V for 30 minutes to form carboxylated carbon fiber, which is abbreviated as CFs;

[0045] ③Immerse 1g of CFs in 300mL of aminated graphene / acetone suspension with a concentration of 1.5g / L, adjust the pH of the solution to 5, add 3g of N-hydroxysuccinimide, and react at 70°C for 1 hour to form Single-layer graphene-modified carbon fibers (CFs / GN).

[0046] ④Immerse 1g of CFs / GN into 300mL of graphene oxide / ethanol su...

Embodiment 2

[0053] 1. Preparation of carbon fiber / graphene composite support (CFs / GNs)

[0054] ①Preparation of aminated graphene: Add 0.6g graphene oxide into 300mL dimethylformamide, mix well to make graphene oxide suspension, add 1g 1-ethyl-(3-dimethylaminopropyl ) carbodiimide and 50g of dimethylethylenediamine were reacted at 90° C. for 1.5 hours to generate aminated graphene (GN).

[0055] ②Preparation of carboxylated carbon fiber: take conductive polyacrylonitrile carbon fiber as the working electrode, immerse it in 9.8g / L sulfuric acid solution, and anodize it at 1.8V for 30 minutes to form carboxylated carbon fiber, which is abbreviated as CFs;

[0056] ③Immerse 1g of CFs in 300mL of aminated graphene / dimethylformamide suspension with a concentration of 2g / L, adjust the pH of the solution to 7, add 2g of N-hydroxysuccinimide, and react at 90°C for 1 hour , to generate single-layer graphene-modified carbon fibers (CFs / GN).

[0057] ④Immerse 1g CFs / GN into 300mL graphene oxide / di...

Embodiment 3

[0063] 1. Preparation of carbon fiber / graphene composite support (CFs / GNs)

[0064] ①Preparation of aminated graphene: Add 0.5g graphene oxide into 300mL acetonitrile, mix well to make a graphene oxide suspension, add 1.2g 1-ethyl-(3-dimethylaminopropyl)carbonitrile Imine and 150 g of dimethyl vinyl diamine were reacted at 30° C. for 2 hours to generate aminated graphene (GN).

[0065] ②Preparation of carboxylated carbon fiber: take conductive polyacrylonitrile carbon fiber as the working electrode, immerse it in 9.8g / L sulfuric acid solution, and anodize it at 1.8V for 30 minutes to form carboxylated carbon fiber, which is abbreviated as CFs;

[0066] ③Immerse 1g of CFs in 250mL of aminated graphene / acetonitrile suspension with a concentration of 1g / L, adjust the pH of the solution to 6, add 2g of N-hydroxysuccinimide, and react at 30°C for 1 hour to form a monolayer Graphene-modified carbon fibers (CFs / GN).

[0067] ④Immerse 1g of CFs / GN into 250mL of graphene oxide / aceton...

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Abstract

The invention discloses a preparation method of a Prussian blue / graphene / carbon fiber composite material. Firstly, a carbon fiber / graphene composite carrier is prepared, and then Prussian blue is deposited thereon. The CFs / GNs / PB composite material prepared by the invention has excellent selective adsorption capacity for cesium metal in aqueous solution, and is convenient for operation and separation.

Description

1. Technical field [0001] The invention relates to a preparation method of a Prussian blue / graphene / carbon fiber composite material, which can be used for the enrichment of cesium in aqueous solution. 2. Background technology [0002] Heavy dilute alkali metal cesium has strong chemical activity and excellent photoelectric properties, and is widely used in traditional application fields such as electronics industry, glass ceramics, biochemistry, and medicine. It is of great economic significance to carry out cesium enrichment in aqueous solution. On the other hand, cesium-containing wastewater may have radiation, which is harmful to the water resource environment. Cubic ferric ferrocyanide (Prussian blue, PB) is a face-centered lattice structure with water molecules in the unit cell; hydrated Cs + The size is consistent with the size of its lattice cage, and can be selectively adsorbed on the hydrophilic defect position of PB through proton protolysis reaction (X. It ha...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/20B01J20/30C02F1/28G21F9/12C02F101/20
Inventor 晋冠平陈方平苏景裕
Owner HEFEI UNIV OF TECH
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