▎ 摘　　要

NOVELTY - Preparation of modified montmorillonite (MMT)/zinc oxide (ZnO)/graphene quantum dots (GQDs) nanocomposite antibacterial agent comprises dispersing 5-20 g MMT in 200 mL deionized water, high-speed stirring at 80 degrees C for 30 minutes, dispersing 2-14 g modifier in 50 mL deionized water, dissolving, filtering, adding montmorillonite, high-speed stirring at 80 degrees C for 2 hours, standing for 2 hours, cooling, filtering, drying and grinding; heating 1-10 g citric acid into orange liquid, adjusting pH to 7.0 by sodium hydroxide, dialyzing and evaporating to obtain GQDs solution; and adding 0.2-0.9 g alkali source into 50 mL ethanol solution, magnetically stirring for 30 minutes to obtain solution A, adding 0.3-2 g zinc source into 100 mL ethanol solution, stirring for 30 minutes, adding GQDs and modified MMT, ultrasonically processing for 10 minutes, moving into three-mouth flask, reacting at 60 degrees C for 30 minutes, adding solution A, reacting for 20 minutes, cooling, washing and centrifuging. USE - Method for preparing modified MMT/ZnO/GQDs nanocomposite antibacterial agent. ADVANTAGE - The antibacterial agent is good for environmental protection.