▎ 摘　　要

NOVELTY - Corn-shaped lanthanum oxide-cerium oxide nanoparticle/graphene composite rare earth polishing powder comprises lanthanum oxide, cerium oxide and graphene. USE - Corn-shaped lanthanum oxide-cerium oxide nanoparticle/graphene composite rare earth polishing powder used for precise polishing of optical glass and smart phone display screens (all claimed). ADVANTAGE - The preparation method is short. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for the preparation of corn-shaped lanthanum oxide-cerium oxide nanoparticle/graphene composite rare earth polishing powder comprising dissolving lanthanum cerium carbonate in deionized water, adjusting pH to 6.5-7 using dilute acid solution, adding graphene oxide solution, urea and cetrimonium bromide, mixing, heating at 85 degrees C for 20-30 minutes, heating at 170-200 degrees C for 30-60 minutes, cooling, precipitating, washing and drying.