Efficient room-temperature production of high-quality graphene by introducing removable oxygen functional groups to the precursor.

ABSTRACT: The excellent solution-processability of graphene oxide (GO) has provided a collection of strategies for the construction of functional graphene assemblies. To improve the performance of graphene-based materials, structurally intact GO should be prepared as a precursor for high-quality graphene; however, solution chemical methods have been constantly challenged by a structural integrity versus fabrication yield trade-off. Here, we report a wet chemical method for the high-efficiency production of a high-quality graphene oxide precursor, with all steps conducted at room-temperature. The functionalization of graphite was performed under temperature and water content control in a concentrated sulfuric acid-potassium permanganate system, and the resulting GO showed a monolayer yield of

SUBMITTER: Chen H 

PROVIDER: S-EPMC6349015 | biostudies-literature | 2019 Jan

REPOSITORIES: biostudies-literature