▎ 摘　　要

NOVELTY - Preparing photocatalytic nanocomposite material involves adding reduced graphene oxide (RGO), bacterial cellulose (BC) and nano-titanium oxide precursor to a mixed solution of co-surfactant and surfactant, mixing, adjusting the pH of the system to 7-9, and reacting. USE - The method is useful for preparing photocatalytic nanocomposite material, which is useful as photocatalytic oxidizing agent for degradation of dyes in printing and dyeing wastewater (all claimed). ADVANTAGE - The method provides photocatalytic nanocomposite material, which has high degradation efficiency, reusability and recovery rate, and excellent photocatalytic performance and photocatalytic stability performance, and does not affect the reuse of printing and dyeing wastewater. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following: (1) the photocatalytic nanocomposite material; and (2) use of the photocatalytic nanocomposite material as photocatalytic oxidizing agent for photocatalytic degradation of dyes.