▎ 摘　　要

A unique approach was developed to produce highly oxygenated graphene nanosheets (OGNs) by solution-based oxidation of the pristine graphene nanosheets (GNs) prepared via a controlled detonation of acetylene with oxygen. The produced OGNs are about 250 nm in size and are hydrophilic in nature. The C/O ratio was dramatically reduced from 49:1 in the pristine GNs to about 1:1 in OGNs, as determined by X-ray photoelectron spectroscopy. This C/O in OGNs is the least ever found in all oxidized graphitic materials that have been reported. Thus, the OGNs produced from the detonated GNs with such high degree of oxidation herein yield a novel and promising material for future applications.