A kind of preparation method of nitrogen-doped ultramicroporous carbon nanosphere
A carbon nanosphere, nitrogen doping technology, applied in nanocarbon, nanotechnology, nanotechnology and other directions, can solve the problems of large particle size of carbon nanospheres, complex preparation methods, low specific surface area, etc., to reduce shrinkage and collapse, Simple preparation process
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Embodiment 1
[0014] Phloroglucinol, terephthalaldehyde, water, resorcinol, hexamethylenetetraammonium and formaldehyde are taken in an amount of 1:0.79:445:2.62:0.49:1.29 in parts by mass. First react phloroglucinol, terephthalaldehyde and water at 70° C. for 1 hour at a stirring speed of 450 rpm to obtain a solution containing phloroglucinol / terephthalaldehyde polymer nanoparticles. Add resorcinol and hexamethylenetetramine to the solution containing phloroglucinol / terephthalaldehyde polymer nanoparticles, then add formaldehyde dropwise to the above solution at a stirring speed of 450 rpm React at 35°C for 24h to obtain a nitrogen-doped polymer solution. The solution was subjected to hydrothermal treatment at 100° C. for 24 hours, and the obtained product was dried at 70° C. for 48 hours to obtain polymer nanospheres. In a tube furnace, the temperature was raised from room temperature to 700°C for carbonization at a rate of 2°C / min under a nitrogen atmosphere and kept for 6 hours, and th...
Embodiment 2
[0016] Phloroglucinol, terephthalaldehyde, water, resorcinol, hexamethylenetetramine and formaldehyde are taken in the quantity of 1:0.79:445:2.62:0.74:1.29 parts by mass. First react phloroglucinol, terephthalaldehyde and water at 70° C. for 1 hour at a stirring speed of 500 rpm to obtain a solution containing phloroglucinol / terephthalaldehyde polymer nanoparticles. Add resorcinol and hexamethylenetetramine to the solution containing phloroglucinol / terephthalaldehyde polymer nanoparticles, then add formaldehyde dropwise to the above solution, at a stirring speed of 500 rpm React at 35°C for 24h to obtain a nitrogen-doped polymer solution. The solution was subjected to hydrothermal treatment at 100° C. for 24 hours, and the obtained product was dried at 70° C. for 48 hours to obtain polymer nanospheres. In a tube furnace, the temperature was raised from room temperature to 850°C for carbonization at a rate of 5°C / min under a nitrogen atmosphere and kept for 4 hours, and the n...
Embodiment 3
[0018] Phloroglucinol, terephthalaldehyde, water, resorcinol, hexamethylenetetramine and formaldehyde are taken in parts by mass of 1:0.79:445:2.62:2:3. First react phloroglucinol, terephthalaldehyde and water at 70° C. for 1 hour at a stirring speed of 700 rpm to obtain a solution containing phloroglucinol / terephthalaldehyde polymer nanoparticles. Add resorcinol and hexamethylenetetramine to the solution containing phloroglucinol / terephthalaldehyde polymer nanoparticles, then add formaldehyde dropwise to the above solution, at a stirring speed of 700 rpm React at 35°C for 24h to obtain a nitrogen-doped polymer solution. The solution was subjected to hydrothermal treatment at 110° C. for 24 hours, and the obtained product was dried at 120° C. for 24 hours to obtain polymer nanospheres. In a tube furnace, the temperature was raised from room temperature to 850°C for carbonization at a rate of 8°C / min under a nitrogen atmosphere and kept for 4 hours, and the temperature was nat...
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