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Photocatalytic Synthesis of Pure and Water-Dispersible Graphene Monosheets



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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 TiO2. 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).