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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: 2013-07-03
SOUTH CENTRAL UNIVERSITY FOR NATIONALITIES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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

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Effect test

Embodiment 1

[0034] Embodiment 1 Product preparation embodiment:

[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 bottom flask, stir and dissolve in a water bath at 40~42°C, then add 0.13g of 20wt% NaOH solution, stir for 10min, add 1.05g of 37wt% formaldehyde solution dropwise, and then heat up to 78 Stir the reaction at ~80°C for 1 h, cool to room temperature, then add 0.6mol / L HCl dropwise to adjust the pH value of the reaction system to 7.0, then remove water by rotary evaporation at 50°C, and use anhydrous Ethanol is diluted to the phenolic resin ethanol solution of 20wt% for subsequent use;

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

[0039] Add 20g of absolute ethanol into the round bottom flask, and add 1.0g of nonionic surfactant F12...

Embodiment 2

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

[0045] 1. Electrode preparation:

[0046] Accurately weigh 0.1g of OMC-ACF-x (approximately 3cm×3cm) on one side and wrap it on a 3cm×3cm pure titanium sheet as the cathode, and wrap the same mass of ACF on one side on a 3cm×3cm pure titanium sheet as Cathode contrast. The activated graphite plate anode GE (3cm×3cm) is combined with ACF and OMC-ACF-x cathode respectively to form different electrode pairs. The side wrapped with OMC-ACF-x or ACF is opposite to GE, and the Electrode pairs are used in electro-Fenton systems.

[0047] 2. Degradation steps:

[0048] During the electro-Fenton degradation experiment of X3B, the X3B wastewater was simulated by the X3B aqueous solution. Air (flow rate 0.6L / min) is passed through the surface of the cathode to keep the oxygen saturation in the solution, ...

Embodiment 3

[0049] Embodiment 3: the regeneration performance test of the OMC-ACF-x prepared by embodiment 1

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

[0051] The result of table 2O MC-ACF-800 regeneration performance test

[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 novel block carbon material with an ordered mesoporous structure, in particular to a preparation method of a novel ordered mesoporous carbon-activated carbon fiber felt composite material and its application as a cathode material Application of Electro-Fenton Reaction for Degradation of 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 widely used in catalyst supports, hydrogen storage materials, electrode materials, etc., so it has been highly valued by people. In recent years, mesoporous materials science has become one of the hot research fields across chemistry, physics, materials, biology and other disciplines in the world, and it has bec...

Claims

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Application Information

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Patent Type & Authority Patents(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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