▎ 摘　　要

NOVELTY - Preparing modified graphene/tungsten-based nanosheet/magnesium-zinc oxide composite material comprises (i) dissolving indium selenide and tungsten-based compounds in organic solvents, then ultrasonically centrifuging the supernatant to obtain indium selenide nano-sheet suspension and tungsten-based nanoplatelet suspension, (ii) slowly pouring the suspension of indium selenide nano-sheet and suspension of tungsten-based nano-sheet into graphene solution, adding zinc salt and magnesium salt and stirring, and then slowly adding complexing agent and uniformly mixing to obtain sol precursor, and (iii) calcining sol precursor, cooling, and grinding to obtain final product. USE - The modified graphene/tungsten-based nanosheet/magnesium-zinc oxide composite material is useful in field of photocatalytic materials and sewage treatment. ADVANTAGE - The method: increases the light response range and light absorption efficiency of the composite material; maintains excellent stability; improves photocatalytic performance of the composite material; and degradation efficiency of rhodamine under sunlight of more than 15% higher than that before modification; and has simple process; is environmentally friendly; and saves energy. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for modified graphene/tungsten-based nanosheet/magnesium-zinc oxide composite material obtained by above method.