▎ 摘　　要

NOVELTY - Preparing modified graphite (alkene) nano-sheet composite powder, comprises (i) soaking the graphite (alkene) nano sheet in nitric acid solution and mechanically stirring for less than or equal to 12 hours, taking out the graphite (alkene) nano sheet and washing, filtering to obtain the etched and activated graphite(alkene) nano sheet A, (ii) placing the graphite(alkene) nano sheet A in the organic ligand in 2 g/l, fully stirring and mixing in cobalt salt and de-ionized water, making the graphite (alkene) nanometre sheet A, organic ligand, cobalt salt, dispersing uniformly in the de-ionized water to form slurry A, (iii) pouring the slurry A into the reaction kettle, reacting the slurry A with the reaction kettle at 120-200 degrees C for 48-72 hours, generating Co-MOFs (cobalt metal organic framework complex), and the Co-MOFs will be attached to the surface of the graphite (alkene) nanosheet A at the same time to obtain the modified graphite (alkene) composite powder B, (iv) taking out the reaction kettle. USE - The method is useful for preparing modified graphite (alkene) nano-sheet composite powder. DETAILED DESCRIPTION - Preparing modified graphite (alkene) nano-sheet composite powder, (i) soaking the graphite (alkene) nano sheet in nitric acid solution and mechanically stirring for less than or equal to 12 hours, taking out the graphite (alkene) nano sheet and washing, filtering to obtain the etched and activated graphite(alkene) nano sheet A, (ii) placing the graphite(alkene) nano sheet A in the organic ligand in 2 g/l, fully stirring and mixing in cobalt salt and de-ionized water, making the graphite (alkene) nanometre sheet A, organic ligand, cobalt salt, dispersing uniformly in the de-ionized water to form slurry A, (iii) pouring the slurry A into the reaction kettle, reacting the slurry A with the reaction kettle at 120-200 degrees C for 48-72 hours, generating Co-MOFs (cobalt metal organic framework complex), and the Co-MOFs will be attached to the surface of the graphite (alkene) nanosheet A at the same time to obtain the modified graphite (alkene) composite powder B, (iv) taking out the reaction kettle, after naturally cooling the reaction kettle to room temperature, filtering and taking out the modified graphite (alkene) composite powder B, drying the modified graphite (alkene) composite powder B in the vacuum drying box at 65 degrees C for 12 hours.