Preparation method and application of activated-carbon-fiber-supported ordered mesoporous carbon-graphene composite material

A technology of activated carbon fibers and composite materials, which is applied in the field of preparation of novel activated carbon fibers loaded ordered mesoporous carbon-graphene composite materials, can solve the problems of high application potential and low current efficiency, achieve low cost, simple preparation method, The effect of excellent catalytic degradation activity

Active Publication Date: 2015-11-11
SOUTH CENTRAL UNIVERSITY FOR NATIONALITIES
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] Based on the successful preparation of ordered mesoporous carbon-activated carbon fiber composites (OMCACF) by our research group, there are high application potentials in prac

Method used

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  • Preparation method and application of activated-carbon-fiber-supported ordered mesoporous carbon-graphene composite material
  • Preparation method and application of activated-carbon-fiber-supported ordered mesoporous carbon-graphene composite material
  • Preparation method and application of activated-carbon-fiber-supported ordered mesoporous carbon-graphene composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] A new type of activated carbon fiber loaded ordered mesoporous carbon-graphene (OMCrGOACF) layered composite material, the preparation steps are as follows:

[0046] (1) Preparation of phenolic resin carbon source:

[0047] Weigh 12.2g of phenol into a round bottom flask, stir to dissolve in a water bath at 43℃, add 2.60g of 20wt% NaOH aqueous solution, stir for 10min, slowly drop 21g of 37wt% formaldehyde solution at 50℃, stirring at 79℃ After reacting for 1 h, the reaction product was cooled to room temperature, and then 0.6 mol / L HCl was dropped into the reaction product to adjust the pH value of the reaction product to 6.9, and water was removed by rotary evaporation at 50° C. The obtained yellow oily product was diluted with absolute ethanol to 20 wt% for use.

[0048] (2) Preparation of graphene oxide (GO):

[0049] Take 20.0mL98wt%H respectively 2 SO 4 , 5.0gP 2 O 5 And 5.0gK 2 S 2 O 8 In a round bottom flask, the solution was heated to 80°C after mixing uniformly, 10g g...

Embodiment 2

[0060] Example 2: Hydrogen peroxide test of OMCrGOACF-x

[0061] 1. Preparation of the electrode

[0062] The OMCrGOACF-x (size 3cm×3cm) prepared in Example 1 was wrapped on a 3cm×3cm pure titanium sheet as a cathode, and a platinum electrode was used as an anode. The platinum electrode (Shanghai Russell Technology Co., Ltd., Model 213) is combined with the OMCrGOACF-x cathode, and the side covered with OMCrGOACF-x is opposite to the platinum electrode, and the electrode is used in the E-Fenton system.

[0063] 2. Preparation of titanium reagent

[0064] Take 68mL98wt% concentrated sulfuric acid and pour it into 100mL distilled water. After the solution is cooled to room temperature, add 8.85g potassium titanium oxalate·dihydrate [K 2 TiO(C 2 O 4 ) 2 ·2H 2 O], finally transferred to a 250mL volumetric flask, add distilled water to a constant volume and shake well before use.

[0065] 3. Electric hydrogen peroxide experiment:

[0066] The experiment process uses a three-electrode system....

Embodiment 3

[0067] Example 3: Impedance measurement of OMCrGOACF-x prepared in Example 1

[0068] A three-electrode system was used in the impedance measurement experiment. The OMCrGOACF-x composite material is the working electrode, the platinum electrode is the auxiliary electrode, and the calomel electrode is the reference electrode. 100mL solution with pH=3.0 contains: 0.1mol / LNa 2 SO 4 And 1×10 - 3 mol / LFe 2+ . Adjust the electrochemical workstation, the AC impedance test conditions are: the initial voltage is the open circuit voltage, and the measurement frequency range is 10 5 ~1Hz, and finally use Zview to process the data to get the impedance.

[0069] Example 4: The OMCrGOACF-x prepared in Example 1 is applied to the electro-Fenton system as an oxygen diffusion cathode to degrade the endocrine disruptor dimethyl phthalate (DMP) test

[0070] During the E-Fenton degradation experiment of DMP, DMP wastewater was simulated by DMP aqueous solution. The degradation process uses a three-e...

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Abstract

The invention belongs to the technical field of preparation and application of an ordered mesoporous laminated-structure novel massive carbon material, and particularly discloses a preparation method of a novel activated-carbon-fiber-supported ordered mesoporous carbon-graphene composite material and application of the activated-carbon-fiber-supported ordered mesoporous carbon-graphene composite material as a cathode material in degrading endocrine disrupters by electric-Fenton reaction. The composite material is optimized on the basis of an ordered mesoporous-carbon-supported activated carbon fiber massive carbon material. The preparation method comprises the following steps: by using graphene oxide as a precursor of graphene, and adding into activated carbon fibers according to different proportions to obtain a graphene oxide-activated carbon fiber composite material; simultaneously dropwisely adding a phenolic resin as an precursor of ordered mesoporous carbon and F127 as a template onto GO@ACF according to a certain proportion; and carrying out solvent volatilization self-assembly, thermal polymerization and high-temperature calcination in an inert gas protective atmosphere to obtain the novel massive ordered-structure carbon material. The material has favorable electric conductivity and large specific area, and can be used as a novel electrode material.

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 layered structure, in particular to a method for preparing a new type of activated carbon fiber supported ordered mesoporous carbon-graphene composite material (OMCrGOACF) and the preparation method thereof As a cathode material, it is used in electro-Fenton reaction to degrade endocrine disruptors. 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), and it has been widely used in catalyst supports, hydrogen storage materials, electrode materials, etc., so it is highly valued by people. [0003] Graphene is another new type of carbon allotrope following the discovery of fullerenes and carbon nanotubes. Its unique atomic struc...

Claims

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Application Information

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IPC IPC(8): C02F1/46
Inventor 孙杰任伟汤迪勇张泽会吕康乐
Owner SOUTH CENTRAL UNIVERSITY FOR NATIONALITIES
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