▎ 摘　　要

NOVELTY - Preparing modified bismuth molybdate ternary composite material, comprises (i) preparing reduced graphene oxide (RGO), (ii) washing egg shell, soaking in diluted hydrochloric acid, peeling egg shell membrane from egg shell and washing after cutting to obtain eggshell membrane (ESM), (iii) dissolving step (i) product in deionized water, subjecting to high-frequency ultrasonic treatment to obtain solution A, adding sodium molybdate dihydrate into solution A, dissolving bismuth(III) nitrate pentahydrate in a mixed solution of acetic acid and water to obtain solution B, adding solution A into solution B and reacting for a period of time in a high-pressure kettle to obtain bismuth molybdenum oxide-reduced graphene oxide composite material, and (iv) dissolving step (ii) produt in deionized water, adding step (iii) product, oscillating at constant temperature in a water bath, drying, calcining under nitrogen atmosphere and naturally cooling to room temperature to obtain final product. USE - The modified bismuth molybdate ternary composite material is useful in photocatalysis of organic pollutants including rhodamine B, methylene orange and phenol and heavy metal ions including chromium(VI) ions. ADVANTAGE - The method: increases specific surface area of bismuth molybdenum oxide under co-modification of reduced graphene oxide and eggshell membrane; improves material structure; and enhances chemical stability to facilitate its absorption in the visible light region. The ternary composite material: has enhanced photocatalytic activity and improved photocatalytic degradation effect of rhodamine B, methylene orange, phenol, and heavy metal ions including chromium(VI) ions in aqueous solution.