The storage method of carboxyl graphene quantum dots is -20℃ and dark, and the shelf life is 1 year.
Graphene is a new material, and sp2 hybrid carbon atoms are closely packed into a single-layer two-dimensional honeycomb lattice structure. Graphene has excellent optical, electrical and mechanical properties, and has important application prospects in the fields of material science, micro-nano processing, energy, biomedicine and drug delivery, and is considered as a revolutionary material in the future.