Preparation method and application of ordered mesoporous carbon-activated carbon fibrofelt composite material

A technology of activated carbon fiber felt and composite materials, which is applied in the field of preparation of new ordered mesoporous carbon-activated carbon fiber felt composite materials, which can solve the problem that PTFE is easy to block the channels of mesoporous carbon, mesoporous carbon is difficult to use as electrode material, and the electrode can be reduced. Material conductivity and other issues, to achieve excellent catalytic degradation activity and degradation speed, less types and dosage, and low cost

Active Publication Date: 2012-10-17
SOUTH CENTRAL UNIVERSITY FOR NATIONALITIES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The reason is that the current preparation method of mesoporous carbon is to prepare it into powder, and this form of mesoporous carbon is difficult to use as an electrode material
At present, research reports at home and abroad mainly mix mesoporous carbon powder with PTFE emulsion and then press it into tablets to use as electrodes. This combination method is unstable, especially in complex usage environments

Method used

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  • Preparation method and application of ordered mesoporous carbon-activated carbon fibrofelt composite material
  • Preparation method and application of ordered mesoporous carbon-activated carbon fibrofelt composite material
  • Preparation method and application of ordered mesoporous carbon-activated carbon fibrofelt composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Example 1 Product preparation example:

[0035] 1. A new type of ordered mesoporous carbon-activated carbon fiber felt (OMC-ACF) composite material, the preparation steps are as follows:

[0036] (1) Preparation of phenolic resin carbon source:

[0037] Put 0.61g of phenol into a round-bottomed flask, stir to dissolve in a water bath at 40~42℃, then add 0.13g of 20wt% NaOH solution, stir for 10min, add 1.05g of 37wt% formaldehyde solution dropwise, and then heat to 78 After ~80℃, the reaction was stirred for 1h, cooled to room temperature, then 0.6mol / L HCl was dropped to adjust the pH of the reaction system to 7.0, then the water was removed by rotary evaporation at 50℃, and the resulting yellow oily product was used anhydrous Ethanol solution of phenolic resin diluted to 20wt% for use;

[0038] (2) Preparation of mesoporous carbon-activated carbon fiber felt composite material (OMC-ACF):

[0039] Add 20g of absolute ethanol into the round bottom flask, add 1.0g of non-ionic s...

Embodiment 2

[0044] Example 2 Application Example: The OMC-ACF-x prepared in Example 1 was applied to the electro-Fenton system as an oxygen diffusion cathode to degrade dye wastewater X3B test

[0045] 1. Preparation of electrode:

[0046] Accurately weigh 0.1g of OMC-ACF-x (approximately 3cm×3cm) and wrap it on a 3cm×3cm pure titanium sheet as the cathode, and wrap the same quality ACF on a 3cm×3cm pure titanium sheet as the cathode. Cathode comparison. The activated graphite plate anode GE (3cm×3cm) is combined with ACF and OMC-ACF-x cathodes to form different electrode pairs. The side covered with OMC-ACF-x or ACF is opposite to GE, and the The electrode corresponds to the electro-Fenton system.

[0047] 2. Degradation steps:

[0048] During the electro-Fenton degradation experiment of X3B, X3B wastewater was simulated by X3B aqueous solution. Pass air (flow rate 0.6L / min) on the surface of the cathode to keep the solution saturated with oxygen, and set the volume of 200mL pH=3.0 containing...

Embodiment 3

[0049] Example 3: Test of regeneration performance of OMC-ACF-x prepared in Example 1

[0050] The OMC-ACF-800 electrode after each use in Example 2 was immersed in deionized water for 3 times, and after soaking for 1 hour each time, it was allowed to air dry naturally, and then the operation steps of 2 were repeated. The electrode was repeatedly used 6 times, and the degradation ability of the sixth use remained 84.0% of the first use (see Table 2), indicating that the cathode material has good regeneration performance and can be reused.

[0051] Table 2O MC-ACF-800 regeneration performance test results

[0052]

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Abstract

The invention relates to the technical fields of preparation and application of a novel massive carbon material with an ordered mesoporous structure, and particularly discloses a preparation method and application of an ordered mesoporous carbon-activated carbon fibrofelt composite material. The ordered mesoporous carbon-activated carbon fibrofelt (OMC-ACF) composite material disclosed by the invention is a novel massive carbon material with an ordered mesoporous structure, and is prepared by taking phenolic resin as a carbon source and F127 as a structure directing agent, coating the phenolic resin and the F127 on the surface of an ACF at the same time according to a certain proportion, and performing intermolecular self-assembly, thermal polymerization and calcination under the protection of an inert gas; and the composite material is large in specific area, high in pore volume and large in bore diameter, so that the composite material can be used as a novel electrode material. The novel massive carbon material prepared by the method has the advantages of high catalytic degradation activity, high stability and the like in a test of cathode diffusion oxygen degradation dye wastewater through electro-Fenton reaction; and the novel massive carbon material is simple in production process and low in cost, and can be easily industrialized.

Description

Technical field [0001] The invention relates to the technical field of preparation and application of a new type of bulk carbon material with an ordered mesoporous structure, in particular to a method for preparing a new type of ordered mesoporous carbon-activated carbon fiber felt composite material and its application as a cathode material Application of electro-Fenton reaction to degrade dye wastewater. Background technique [0002] Ordered mesoporous carbon is a new type of non-silicon-based mesoporous material with a huge specific surface area (up to 2500m 2 / g), regular pore structure, large pore size (2-50nm) and pore volume (up to 2.25cm 3 / g), so it has been important applications in catalyst carriers, hydrogen storage materials, electrode materials, etc., so it is highly valued by people. In recent years, mesoporous materials science has become one of the international hot research fields that cross chemistry, physics, materials, biology and other disciplines, and it ha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/461C02F1/72
Inventor 孙杰胡晶晶吕康乐钟超颜俊琨
Owner SOUTH CENTRAL UNIVERSITY FOR NATIONALITIES
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