A kind of preparation method of nano-carbon material doped graphene-like structure
A nano-carbon material, graphene technology, applied in the direction of nano-carbon, nanotechnology for materials and surface science, nanotechnology, etc.
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[0021] A preparation method of a carbon nanomaterial doped with a graphene-like structure, comprising the steps of:
[0022] 1) Put the montmorillonite in the solution containing the dye for full adsorption treatment;
[0023] 2) The dye-adsorbed montmorillonite is sequentially dried, pulverized, carbonized, acidified, washed, and dried to obtain the product.
[0024] In step 1), preferably, the dye is a cationic dye containing nitrogen atoms and / or sulfur atoms;
[0025] In the solution containing the dye, the concentration of the dye is 50-800mg / L; the mass ratio of the montmorillonite to the dye in the solution is 2:(0.1-2).
[0026] In step 2), the carbonization conditions are as follows: carbonization is carried out in a protective gas, the carbonization temperature is 500-900°C, and the carbonization time is 2-5 hours;
[0027] The protective gas is at least one of nitrogen and rare gases; preferably, the protective gas is at least one of nitrogen, helium, neon, argon,...
Embodiment 1
[0031] A preparation method of a carbon nanomaterial doped with a graphene-like structure, comprising the following steps:
[0032] 1) Put 2 g of montmorillonite into 2 L of wastewater containing Basic Violet 16 (Basic Violet 16, containing N) at a concentration of 400 mg / L. After 2 hours of adsorption, it precipitates for 2 hours, and the wastewater becomes clear;
[0033] 2) Separate, dry and pulverize the precipitated montmorillonite containing basic violet 16, place it in a muffle furnace and heat it up to 700 °C for 3 h under the protection of nitrogen, and carbonize the montmorillonite after carbonization with a volume concentration of 18%. Hydrofluoric acid and hydrochloric acid with a volume concentration of 8% were alternately washed 5 times, each washing time was 2 h, and the acid consumption for each washing was 40 mL. After drying, a nano-carbon material doped with a graphene-like structure is obtained.
[0034] The XRD characterization results show that the dista...
Embodiment 2
[0036] A preparation method of a carbon nanomaterial doped with a graphene-like structure, comprising the following steps:
[0037] 1) Put 2 g of montmorillonite into 5 L of 200 mg / L containing methylene blue (Methylene Blue, referred to as MB, containing N, S) solution, after 1 h of adsorption, it precipitates for 2 h, and the wastewater becomes clear;
[0038] 2) The above montmorillonite adsorbed with the cationic dye methylene blue was separated, dried, and pulverized, and then placed in a muffle furnace and heated to 600 °C for 4 h under the protection of nitrogen. The volume concentration of the carbonized montmorillonite was 15% Hydrofluoric acid and hydrochloric acid with a volume concentration of 12% were alternately washed 4 times, each washing time was 3 h, and the acid dosage for each washing was 30 mL. The product is dried to obtain a nano-carbon material doped with a graphene-like structure.
[0039] The XRD characterization results show that ( figure 2 ), the...
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