▎ 摘　　要

NOVELTY - Tantalum pentoxide nanoparticles/graphene composite photocatalyst is prepared by dissolving tantalum pentoxide precursor powder in hydrogen peroxide reagent to obtain tantalum peroxide precursor solution, adding graphite oxide in precursor solution and performing ultrasonic dispersion, performing hydrothermal reaction, and centrifuging. USE - Preparation of tantalum pentoxide nanoparticles/graphene composite photocatalyst for organic pollutant decomposition. ADVANTAGE - Tantalum pentoxide nanoparticles/graphene composite photocatalyst has good conductivity and excellent performance and is environment-friendly. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for preparation of graphite oxide which involves adding concentrated sulfuric acid to sodium nitrate (NaNO3), flake graphite, and potassium permanganate under ice cooling, heating to 10-15 degrees C, stirring for 1 hour, heating to 35-40 degrees C for 1 hour, slowly adding de-ionized water and heating to 100 degrees C, adding 5 wt.% hydrogen peroxide solution dropwise, stirring for 1-2 hours, washing with 5 wt.% diluted hydrochloric acid solution, performing centrifugal filtration, and vacuum drying at 60-80 degrees C for 48 hours. DESCRIPTION OF DRAWING(S) - The drawing shows a scanning electron microscope image of tantalum pentoxide nanoparticles/graphene composite photocatalyst.