▎ 摘　　要

NOVELTY - Preparing graphene involves performing reaction between calcium carbide and surface active agent taken in mass ratio of 50:3-6, all taken in a stirrer, stirring at 80-120 revolutions/minute for 5-10 minutes at 60-100 degrees C. The resultant is a carbon source precursor. Rectorite washed with ethanol is added with catalyst and processed by heating in a microwave device operating at 500-600 watts for 3-5 minutes. Rectorite and catalyst are taken in mass ratio of 8:0.1-0.3. The product is a catalyst loaded rectorite. The carbon source precursor and catalyst loaded rectorite are mixed in 1:3-4 ratio. USE - Method for preparing graphene (claimed). ADVANTAGE - The method enables to prepare graphene in simple, cost effective manner and graphene has wide market prospect. DETAILED DESCRIPTION - Preparing graphene involves performing reaction between calcium carbide and surface active agent taken in mass ratio of 50:3-6, all taken in a stirrer, stirring at 80-120 revolutions/minute for 5-10 minutes at 60-100 degrees C. The resultant is a carbon source precursor. Rectorite washed with ethanol is added with catalyst and processed by heating in a microwave device operating at 500-600 watts for 3-5 minutes. Rectorite and catalyst are taken in mass ratio of 8:0.1-0.3. The product is a catalyst loaded rectorite. The carbon source precursor and catalyst loaded rectorite are mixed in 1:3-4 ratio, all taken in a stirrer, stirring at 800-1000 revolutions/minute, mixture is heated at 60-80 degrees C at vacuum pressure of 5-10 MPa for 10-20 minutes to obtain rectorite carbon precursor which is mixed with added with mixed acid under argon gas protection in a reactor heated at 800-1000 degrees C for 3-8 hours and then natural cooled to 20 degrees C. This is then treated with 30-50% nitric acid to remove rectorite to obtain graphene primary product. The obtained graphene is neutralized using alkali and dried to obtain graphene with thickness of 2 nm.