One-step synthesis of easy-recycling TiO2-rGO nanocomposite photocatalysts with enhanced photocatalytic activity

► A one-step green hydrothermal method has been developed for the fabrication TiO2-GO nanocomposite. ► The formation mechanism was based on the initial formation of strong-coupling and the subsequent in situ reduction of GO to rGO during hydrothermal treatment. ► The prepared TiO2-GO nanocomposite photocatalyst showed an enhanced photocatalytic performance. ► The suspensible TiO2-rGO composite photocatalysts can be easily separated from the aqueous solution after photocatalytic reaction.