▎ 摘　　要

NOVELTY - Preparing boron nano sheet involves mixing graphene and boron nitride nanosheets with mass ratio 1-99%:99-1%. The obtained mixture is stirred uniformly. The obtained mixture is kept under a protective atmosphere or vacuum environment at 800-1200 degrees C for 0.5-12 hours. The obtained mixture is cooled at 400-600 degrees C for 4-8 hours, calcined at room temperature and then washed and dried to obtain boron nano sheet. USE - Method for preparing boron nano sheet (claimed). ADVANTAGE - The method enables to prepare boron nano sheet in a simple, eco-friendly and cost-effective manner with improves yield.