▎ 摘　　要

NOVELTY - Preparation of tubular tungsten oxide-graphene composite material involves modifying graphite by improved Hummers method to obtain oxidized graphite powder, ultrasonically dispersing obtained oxidized graphite powder into n-propanol to obtain dispersion solution, dissolving tungsten hexachloride into obtained dispersion solution at mass ratio of 0.008-0.012 mol:1 L and hydrothermal reacting at 150-250 degrees C for 10-14 hours to obtain mixed solution; and reacting, stirring, cleaning obtained solid material, and drying at 50-70 degrees C to obtain black powder of tubular tungsten oxide-graphene composites. USE - Method for preparing tubular tungsten oxide-graphene composite material used as temperature sensitive material of temperature sensor or as photocatalytic degradation material (claimed). ADVANTAGE - The method has light catalyzing degradable material. DETAILED DESCRIPTION - Preparation of tubular tungsten oxide-graphene composite material comprises modifying graphite by improved Hummers method to obtain oxidized graphite powder, ultrasonically dispersing obtained oxidized graphite powder into n-propanol at vol ratio of 1-5 mg:3 mL under 35-45 kHz ultrasonic frequency for 0.5-1.5 hour to obtain dispersion solution, dissolving tungsten hexachloride into obtained dispersion solution at mass ratio of 0.008-0.012 mol:1 L, transferring obtained solution into reaction vessel, and hydrothermal reacting at 150-250 degrees C for 10-14 hours to obtain mixed solution; and transferring obtained mixed solution into conical flask, adjusting pH of mixed solution into 9-10, adding 50% hydrazine hydrate aqueous solution, transferring obtained mixture into oil bath, reacting at 80-120 degrees C for 1.5-2.5 hours, stirring under 500-1000 revolutions/minute (rpm) speed of centrifugation, cleaning obtained solid material, and drying at 50-70 degrees C to obtain black powder of tubular tungsten oxide-graphene composites. An INDEPENDENT CLAIM is included for preparation of temperature sensor by tubular tungsten oxide-graphene composite material comprising mixing tubular tungsten oxide-graphite, mixing binder into slurry, screen printing obtained slurry into interdigitated electrode to obtain tradigital electrode, drying at 60 degrees C, and discharging at 300 degrees C to obtain product.