▎ 摘 要
NOVELTY - Preparing graphene comprises contacting a graphitic oxide composition with a photocatalytic-coated metal substrate to yield graphene, where the graphitic oxide composition comprises graphitic oxide and an organic solvent. USE - The method is useful for preparing graphene such as graphene sheet (all claimed), which is useful in industrial and consumer products. ADVANTAGE - The method prepares the graphene with high yield, purity and electrical conductivity. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for the graphene composition made by the method.