▎ 摘　　要

NOVELTY - The preparation method of flower-shaped tungsten trioxide/graphene composite photocatalyst involves weighing 2 g sodium tungstate dihydrate and 0.4 g sodium chloride, dissolving in 50 mL water, magnetically stirring for 3 hours, adding graphene oxide to the solution, adjusting the pH value to 2 using hydrochloric acid, continuously stirring for 3 hours, transferring the mixed solution to a 100 mL PTFE-lined reactor, reacting at 180 degrees C for 15 hours, naturally cooling to room temperature after finishing the reaction, filtering, washing, and drying at 60 degrees C for 24 hours. USE - Preparation method of flower-shaped tungsten trioxide/graphene composite photocatalyst (claimed) used for degrading organic pollutants such as methylene blue under sunlight. ADVANTAGE - The method enables preparation of flower-shaped tungsten trioxide/graphene composite photocatalyst with excellent crystal form, light-absorbing property, degradation performance of methylene blue, and decoloring rate of 92%.