Photocatalytic synthesis of pure and water-dispersible graphene monosheets

摘要

Highly pure monosheets of graphene dispersible in water without the help of stabilizers have been prepared by photocatalytic reduction of graphene oxide using UV light and TiO _2. More than 90 % of the highly conductive graphene was recovered in a pure form in solution, which showed no sign of aggregation even after one month (see figure).