▎ 摘　　要

NOVELTY - Preparing a reduced graphene oxide/nano-titanium dioxide (TiO2) composite demulsifier involves preparing graphene oxide having a carboxyl group and a hydroxyl group on a surface, modifying the surface of graphene oxide with nano-titanium dioxide generated by in-situ hydrolysis of organic titanium precursor, and then hydrothermally reducing to obtain a reduced graphene oxide/nano-titanium dioxide composite demulsifier. USE - Method for preparing a reduced graphene oxide/nano-titanium dioxide composite demulsifier. ADVANTAGE - The method enables to prepare reduced graphene oxide/nano-titanium dioxide composite demulsifier that has high efficiency, is ecofriendly, can be applied to neutral and acidic conditions, and has high salt tolerance. The composite demulsifier demulsifier can be transferred to the oil phase after demulsification to avoid staying in the water phase and affecting subsequent use of the water phase.