▎ 摘　　要

NOVELTY - Preparing three-dimensional fluorine-nitrogen-doped graphene/titanium dioxide composite material comprises (a) adding graphene oxide to water and dispersing to prepare graphene oxide dispersion, (b) adding ammonium fluotitanate and urea to the graphene oxide dispersion of the step (a), performing hydrothermal reaction after uniform dispersion to obtain three-dimensional fluoronitrogen graphene/titanium dioxide gel, freeze-drying the three-dimensional fluoronitrogen graphene/ titanium dioxide gel to obtain three-dimensional fluorine nitrogen doped graphene /titanium dioxide pre-product and (c) subjecting the three-dimensional fluorine-nitrogen-doped graphene/titanium dioxide pre-product to high-temperature calcination. USE - The method is useful for preparing three-dimensional fluorine-nitrogen-doped graphene/titanium dioxide composite material. ADVANTAGE - The method: improves the conductivity and electron mobility of three-dimensional graphene; effectively inhibiting titanium dioxide photogenerated electrons-hole pair recombination; provides a carrier for efficient transmission of titanium dioxide electrons; can efficiently adsorb pollutants; and improves the photocatalytic performance. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for three-dimensional fluorine-nitrogen-doped graphene/titanium dioxide composite material prepared by the method mentioned above.