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Doped three-dimensional porous carbon for ion removal from water and preparation method thereof

A three-dimensional porous, ionic technology, applied in separation methods, carbon preparation/purification, chemical instruments and methods, etc., can solve the problems of high cost of desalination electrode materials, low specific capacity, poor wettability of desalination electrode materials, etc., to achieve outstanding Substantial features, low cost, high desalination effect

Active Publication Date: 2021-08-10
SHANGHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Many researchers have also tried to prepare many new desalination electrode materials, but the shortcomings of poor wettability and low specific capacity of desalination electrode materials have not been well resolved, and there are also disadvantages of high cost of desalination electrode materials

Method used

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  • Doped three-dimensional porous carbon for ion removal from water and preparation method thereof
  • Doped three-dimensional porous carbon for ion removal from water and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0018] Dissolve 1g of gallic acid monohydrate in 200ml of deionized water, stir it into a homogeneous solution by magnetic stirring, then add 10ml of polystyrene microsphere aqueous dispersion with a concentration of 50mg / ml, stir evenly, and then use a syringe pump to 40ml of 12.5mg / ml iron acetate aqueous solution was added dropwise to the above mixture at a rate of h, then 40ml of 2mg / ml graphene oxide solution was added thereto, and then stirred at 400rpm for 30min. Then the aqueous solution 100ml that contains 1.5ml mass fraction is 36% acetic acid and 1g chitosan adds above-mentioned mixture, stirs 1h under the rotating speed of 400rpm, then adds 0.2g phytic acid solution wherein and continues to stir 30min, then the gained mixture is in Centrifuge at 6000rpm for 5min, freeze-dry the precipitate to make it fully dry, and calcinate the dried product in argon at 800°C for 2h, with a heating rate of 5°C / min. Then immerse the calcined product in 2mol / L hydrochloric acid solu...

Embodiment 2

[0021] Dissolve 1g of gallic acid monohydrate in 200ml of deionized water, stir it into a homogeneous solution by magnetic stirring, then add 10ml of polystyrene microsphere aqueous dispersion with a concentration of 50mg / ml, stir evenly, and then use a syringe pump to 40ml of 12.5mg / ml ferric sulfate aqueous solution was added dropwise to the above mixture at a rate of h, then 40ml of 2mg / ml graphene oxide solution was added thereto, and then stirred at 400rpm for 30min. Then the aqueous solution 100ml that contains 1.5ml mass fraction is 36% acetic acid and 1g chitosan adds above-mentioned mixture, stirs 1h under the rotating speed of 400rpm, then adds 0.2g phytic acid solution wherein and continues to stir 30min, then the gained mixture is in Centrifuge at 6000rpm for 5min, freeze-dry the precipitate to make it fully dry, and calcinate the dried product in argon at 800°C for 2h, with a heating rate of 5°C / min. Then immerse the calcined product in 2mol / L hydrochloric acid so...

Embodiment 3

[0024] Dissolve 1g of gallic acid monohydrate in 200ml of deionized water, stir it into a homogeneous solution by magnetic stirring, then add 10ml of polystyrene microsphere aqueous dispersion with a concentration of 50mg / ml, stir evenly, and then use a syringe pump to 40ml of 12.5mg / ml ferric chloride hexahydrate aqueous solution was added dropwise to the above mixture at a rate of h, then 40ml of 2mg / ml graphene oxide solution was added thereto, and then stirred at 400rpm for 30min. Then the aqueous solution 100ml that contains 1.5ml mass fraction is 36% acetic acid and 1g chitosan adds above-mentioned mixture, stirs 1h under the rotating speed of 400rpm, then adds 0.2g phytic acid solution wherein and continues to stir 30min, then the gained mixture is in Centrifuge at 6000rpm for 5min, freeze-dry the precipitate to make it fully dry, and calcinate the dried product in argon at 800°C for 2h, with a heating rate of 5°C / min. Then immerse the calcined product in 2mol / L hydroch...

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Abstract

The invention relates to a doped three-dimensional porous carbon for ion removal in water and a preparation method thereof. The invention uses polystyrene microspheres as a hard template, graphene as an auxiliary agent for enhancing conductivity, and chitosan and Phytic acid is a dopant source of nitrogen and phosphorus elements and plays a role in preventing graphene from re-stacking. It can be applied to seawater desalination, removal of heavy metal ions in water, and electrode materials for supercapacitors and lithium ion batteries. The invention has the advantages of increasing the wettability and conductivity of carbon materials, simple process and low cost.

Description

technical field [0001] The invention relates to a doped three-dimensional porous carbon for removing ions in water and a preparation method thereof, which can be used for removing salt or heavy metal ions in water. Background technique [0002] Fresh water resources are scarce resources in some parts of the world, and the advancement of seawater desalination technology has brought benefits to coastal water-scarce areas. Capacitor desalination is an emerging high-efficiency and low-cost seawater desalination method. Capacitor desalination method is a method that uses the principle of electrochemical double layer to adsorb and store ions contained in water through electrode materials with high specific surface area and rich pores. By applying an electric field of a certain strength between the electrodes of a parallel plate capacitor, the ions in the water filled between the electrodes will move to the direction of the opposite electrode under the action of the electric field...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B32/05H01G11/32H01G11/24H01M4/583H01M10/0525C02F1/469C02F103/08C02F101/20
CPCC01P2002/30C01P2006/12C02F1/4604C02F1/4691C02F2101/20C02F2103/08H01G11/24H01G11/32H01M4/583H01M10/0525Y02E60/10Y02E60/13
Inventor 张登松施利毅颜婷婷韩金龙陈国荣
Owner SHANGHAI UNIV
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