▎ 摘　　要

NOVELTY - A graphene-loaded tungsten trioxide (WO3) nano-line composite material has 1-D and 2-D nano-composite structure, diameter of 10-30 nm, and length of 50-600 nm, wherein WO3 nano-line penetrates or is distributed on inner layer or surface of lamellar graphene main body material. USE - A graphene-loaded tungsten trioxide nano-line composite material (claimed). ADVANTAGE - Preparation technique is simple, reagent is low cost, large scale preparation is possible, and preparation method for reduction of graphite oxide and formation of nano-composite material is environment-friendly. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for preparation method of graphene-loaded WO3 nano-line composite material which involves dissolving sodium tungstate in distilled water, adding into acidity regulator for regulating concentration of sodium tungstate solution to 0.1-1 and pH value to 1-2, transferring sodium tungstate solution to hydrothermal reaction kettle, performing hydrothermal reaction for 10-24 hours at 120-200 degrees C, pouring WO material into vacuum filtering device, filtering material, washing material by deionized water, vacuum drying, sintering material for 2-4 hours at 300-500 degrees C in air atmosphere to obtain WO3 nano-line, ultrasonically dispersing graphite oxide in reductive alcohol agent for regulating concentration of graphite oxide to 0.5-10 mg/ml, ultrasonically treating for 1-3 hours, mixing WO3 nano-line with graphite oxide dispersing solution, wherein mass ratio WO3 nano-line:graphite oxide is 1:0.01-0.5 after mixing, transferring mixture into photocatalytic reactor, performing photocatalytic reduction reaction for 0.5-3 hours under simulated sunlight, pouring product into vacuum filtering device for filtering, washing product by deionized water, and vacuum drying. DESCRIPTION OF DRAWING(S) - The drawing shows a scanning electron microscope (SEM) image of a middle product of graphene-loaded tungsten trioxide nano-line composite material.