▎ 摘　　要

NOVELTY - Preparing porous three dimensional graphene involves alloying of pieces of nanoporous metal sheets. The metal pieces are then placed into quartz boat. The quartz boat is placed in tube furnace which leads to source of carbon gas. Argon, hydrogen and carbon gas are injected into furnace at 1-50:200-500:50-200 molar ratio. The furnace is raised to 500-1100 degrees C. Sintering is done for 0.5-30 minutes. Sample is then cooled to room temperature in an atmosphere of argon gas and then taken out of tube furnace. It is then soaked in etching liquid for preparing nanoporous metal. USE - Method for preparing three dimensional graphene (claimed). ADVANTAGE - The method enables to prepare porous three dimensional graphene in a simple and cost effective way and the resulting three-dimensional porous graphene has uniform pore size distribution. DETAILED DESCRIPTION - Preparing porous three dimensional graphene involves alloying of pieces of nanoporous metal sheets. The metal pieces are then placed into quartz boat. The quartz boat is placed in tube furnace which leads to source of carbon gas. Argon, hydrogen and carbon gas are injected into furnace at 1-50:200-500:50-200 molar ratio. The furnace is raised to 500-1100 degrees C. Sintering is done for 0.5-30 minutes. Sample is then cooled to room temperature in an atmosphere of argon gas and then taken out of tube furnace. It is then soaked in etching liquid for preparing nanoporous metal. After etching, sample is washed with water and dried to obtain nanoporous graphene thin film.