▎ 摘　　要

NOVELTY - The preparation method of high-performance YAG yellow fluorescent powder by graphene oxide co-precipitation involves weighing yttrium-aluminum-cerium oxide, dissolving yttrium(III) nitrate hexahydrate, cerium(III) nitrate hexahydrate and aluminum nitrate nonahydrate in deionized water, dissolving ammonium sulfate and ammonium bicarbonate in deionized water, adding graphene oxide to the saturated solution and mixing, dripping saturated mother liquor in saturated solution, leaving, aging, filtering, washing, drying and grinding, sintering, cooling and grinding. USE - The method is useful for preparing high-performance YAG yellow fluorescent powder (claimed). ADVANTAGE - The method enables simple preparation of high-performance YAG yellow fluorescent powder with excellent chemical-physical adsorption effect, electrostatic attraction effect, dispersibility and fluorescence intensity in a controllable manner. DETAILED DESCRIPTION - The preparation method of high-performance YAG yellow fluorescent powder by graphene oxide co-precipitation involves weighing yttrium-aluminum-cerium oxide of formula: Y3-xAl5O12:Cex, dissolving yttrium(III) nitrate hexahydrate, cerium(III) nitrate hexahydrate and aluminum nitrate nonahydrate in deionized water to obtain saturated mother liquor, dissolving ammonium sulfate and ammonium bicarbonate in molar ratio of 1:(40-100) in deionized water to obtain saturated solution, adding graphene oxide to the saturated solution and mixing, adjusting the pH value of the mixed solution using aqueous ammonia, dripping saturated mother liquor in saturated solution to obtain solid, leaving, aging, filtering, washing, drying and grinding to obtain fluorescent powder, placing fluorescent powder in tubular furnace, sintering, cooling and grinding. x=0.03-0.07.