Preparation method of boron-doped porous carbon nitride material

[0012] Example 1

[0013] Step S1: Fully grind the melamine and put it into a porcelain crucible, seal it and put it in a muffle furnace, heat it up to 550°C at a heating rate of 5°C / min and keep it for 2 hours, cool to room temperature and rinse with boiling water repeatedly to get pure Graphite phase carbon nitride;

[0014] Step S2: Take the graphite phase carbon nitride obtained in step S1, sodium chloride, potassium chloride, and ammonia borane at a mass ratio of 2:1:1:1 and mix them evenly, then spread them in a porcelain boat. The boat was placed in a tube furnace under an air atmosphere, reacted at 750°C for 1 minute, then taken out, cleaned with hot water, and dried in a vacuum drying box to obtain a boron-doped porous carbon nitride material.

[0015] Example 2

[0016] Step S1: Fully grind the melamine and put it into a porcelain crucible, seal it and put it in a muffle furnace, heat it up to 550°C at a heating rate of 5°C / min and keep it for 2 hours, cool to room temperature and rinse with boiling water repeatedly to get pure Graphite phase carbon nitride;

[0017] Step S2: Take the graphite phase carbon nitride obtained in step S1, sodium chloride, potassium chloride and ammonia borane at a mass ratio of 2:1:1:1.5, mix them evenly, and then spread them in a porcelain boat. The boat was placed in a tube furnace under an air atmosphere, reacted at 750°C for 2.5 minutes, then taken out, cleaned with hot water, and dried in a vacuum drying box to obtain a boron-doped porous carbon nitride material.

[0018] Example 3

[0019] Step S1: Fully grind the melamine and put it into a porcelain crucible, seal it and put it in a muffle furnace, heat it up to 550°C at a heating rate of 5°C / min and keep it for 2 hours, cool to room temperature and rinse with boiling water repeatedly to get pure Graphite phase carbon nitride;

[0020] Step S2: Take the graphite phase carbon nitride obtained in step S1, sodium chloride, potassium chloride and ammonia borane at a mass ratio of 2:1:1:2 and mix them evenly, then spread them in a porcelain boat, and then the porcelain The boat was placed in a tube furnace under an air atmosphere, reacted at 750°C for 2.5 minutes and then taken out, cleaned with hot water, and dried in a vacuum drying box to obtain a boron-doped porous carbon nitride material.