▎ 摘　　要

NOVELTY - A graphene quantum dot large scale preparation method comprises taking 1:260-265 mass ratio of conductive carbon black and nitric acid, stirring, oil bath heating at 135 plus minus 2 degrees C for 24 plus minus hours, raising temperature to 180 plus minus 2 degrees C for 10 plus minus 2 hours, pumping argon gas, evaporating, obtaining solid, adding deionized water, dissolving, centrifuging, taking upper layer, filtering into 25 nm and 220 nm aperture, evaporating at 40-80 degrees C, and freeze drying. USE - Graphene quantum dot large scale preparation method (claimed). DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for components of graphene quantum dot large scale preparation device.