▎ 摘　　要

NOVELTY - Synthesis of high UV-visible absorption efficiency composite luminescent material involves dissolving yttrium oxide and europium oxide in concentrated nitric acid, heating and evaporating; dispersing graphene powder in distilled water, adding boric acid, stirring, and adding ammonia to adjust pH; charging mixed solution into stainless steel hydrothermal autoclave, and reacting; cooling, removing reaction solution, centrifugal cleaning with anhydrous ethanol, placing sample in 80 degrees C high temperature blast oven and evaporating; heating dried samples at 350 degrees C for 4 hours. USE - Method for synthesizing high UV-visible absorption efficiency composite luminescent material (claimed). DETAILED DESCRIPTION - Synthesis of high UV-visible absorption efficiency composite luminescent material comprises weighing yttrium oxide and europium oxide, dissolving in concentrated nitric acid, placing on constant temperature magnetic stirrer, heating and evaporating; dispersing graphene powder in distilled water to prepare 0.2-1.8 g/L graphene oxide dispersion, adding white precipitate to control concentration of yttrium oxide, adding boric acid, stirring for 30 minutes in collector-type magnetic stirrer, homogeneously dispersing samples in ultrasonic cleaner for 2 hours, and adding ammonia to adjust pH of solution to 8-9; charging mixed solution into stainless steel hydrothermal autoclave, and reacting for 6 hours in electric blast oven at 230 degrees C; cooling to room temperature, removing reaction solution, cleaning with anhydrous ethanol by centrifugal cleaning for 3 times, placing sample in 80 degrees C high temperature blast oven and evaporating; heating dried samples at 350 degrees C for 4 hours.