▎ 摘　　要

NOVELTY - Preparing graphene nanowall involves dissolving bivalent metal ion soluble salt, trivalent metal ion soluble salt and weak alkaline substance in the deionized water to obtain a mix solution. The obtained mix solution is kept in a reaction vessel and then the obtained material is added with polytetrafluoroethylene substrate to obtain the volume of vessel 50-80%. The cleaned copper foil as a substrate is inserted into the reaction vessel at 100-120 degrees C and then the obtained material is performed a hydro-thermal reaction for 10-12 hours. USE - Method for preparing graphene nanowall (claimed). ADVANTAGE - The method enables to prepare graphene nanowall in simple and convenient manner. DETAILED DESCRIPTION - Preparing graphene nanowall involves dissolving bivalent metal ion soluble salt, trivalent metal ion soluble salt and weak alkaline substance in the deionized water to obtain a mix solution. The obtained mix solution is kept in a reaction vessel and then the obtained material is added with polytetrafluoroethylene substrate to obtain the volume of vessel 50-80%. The cleaned copper foil as a substrate is inserted into the reaction vessel at 100-120 degrees C and then the obtained material is performed a hydro-thermal reaction for 10-12 hours. The copper foil is washed with deionized water to remove surface absorbing iron and then the obtained material is dried. The copper foil substrate is grow to obtain nanowall thin film and then the obtained material is added according to hydrotalcite and camphor the mass ratio of 1:2 to 1:20. The obtained material is kept in double temperature area tube-type furnace and then the chemical gas phase is deposited to obtain deposition surface graphene layer under an inert gas atmosphere. The surface deposition graphene layer of nanometer wall film is completely immersed in nitric acid solution of 50-65%. The obtained material is stand for 0.5-2 hours and then the obtained material is stirred at 6000-9000 revolution per minute to remove acid solution. The obtained material is washed with deionized water to obtain liquid pH value 6.0-7.0 and then the obtained material is dried at 50-80 degrees C for 6-10 hours to obtain the desired material.