Preparation method and application of a three-dimensional porous carbon material
A technology of three-dimensional porous and carbon materials, which is applied in chemical instruments and methods, carbon compounds, inorganic chemistry, etc., can solve the problems of non-existence, small porosity, and non-millimeter or nanometer level, which is conducive to industrial production and high efficiency. Adsorption performance, effect of high specific capacitance
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[0021] In a first aspect, an embodiment of the present invention provides a method for preparing a three-dimensional porous carbon material, comprising the following steps:
[0022] Step S10, dissolving the aromatic monomer in an acid-containing solvent to obtain a first solution;
[0023] Step S20, dissolving the oxidant in the aqueous solution to obtain a second solution;
[0024] Step S30, mixing the first solution and the second solution to obtain a hydrogel;
[0025] Step S40, carbonizing and activating the hydrogel to obtain a three-dimensional porous carbon material.
[0026] The preparation method of the three-dimensional porous carbon material provided in this example is to configure the first solution, that is, dissolve the aromatic monomer in an acid-containing solvent; then configure the second solution, that is, dissolve the oxidizing agent in the aqueous solution; further dissolve the first solution It is mixed with the second solution to react to generate a po...
Embodiment 1
[0059] Step S1, preparing the first solution: preparing 100 mL of aqueous solution, wherein the concentration of aniline is 1.5 mol / L, the concentration of phytic acid is 0.3 mol / L, and the molar ratio of phytic acid to aniline is 1:5.
[0060] Step S2, preparing a second solution: preparing a 30 mL aqueous solution, wherein the concentration of ammonium persulfate is 2.5 mol / L.
[0061] Step S3, stirring and mixing the first solution and the second solution rapidly at room temperature, and then standing for 3 hours until a hydrogel is formed, wherein the molar ratio of ammonium persulfate to aniline is 1:2.
[0062] Step S4, immersing the obtained hydrogel in deionized water for 24 hours, and then washing with distilled water 2 to 4 times to fully wash away unreacted raw materials. The polyaniline hydrogel was freeze-dried in a freeze dryer for 48 hours to obtain an airgel. The airgel is calcined and carbonized, and the temperature is raised to 400° C. for 2 hours under an a...
Embodiment 2
[0082] Step S1, prepare the first solution: configure 15mL of water and propanol solution (the volume ratio of propanol to deionized water is 4:1), in which the concentration of pyrrole is 6.4mol / L, and the concentration of phytic acid is 0.256mol / L L, the molar ratio of phytic acid to pyrrole is 1:25.
[0083] Step S2, preparing a second solution: preparing a 10 mL aqueous solution, wherein the concentration of ammonium persulfate is 2.4 mol / L.
[0084] In step S3, the first solution and the second solution were quickly stirred and mixed with ice down to 0°C, the molar ratio of ammonium persulfate to pyrrole was 1:4, and then left at 0°C for 2 hours until hydrogel was formed.
[0085] Step S4, soaking the obtained hydrogel in ethanol for 24 hours, and then soaking in deionized water for 24 hours, fully washing away unreacted raw materials. Then dry with hot air until the solution is completely removed to obtain an airgel. The airgel is calcined and carbonized, and the tempe...
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