▎ 摘　　要

NOVELTY - Method for preparing silver phosphate/graphene oxide/hydroxyapatite composite photocatalyst using bovine bone, involves (a) breaking bovine bone to small pieces, boiling with deionized water for several hours and washing several times until removing oil and collagen, and placing in muffle furnace for pyrolyzing to obtain biomass calcium hydroxyapatite, (b) ball milling obtained product to micro-nanoscale powder using high energy ball mill, (c) adding obtained product to silver nitrate solution, dispersing with graphene oxide and placing in ultrasonic condition for reacting in dark place, (d) washing obtained product with deionized water and anhydrous ethanol for several times to obtain silver phosphate/graphene oxide/hydroxyapatite composite, and (e) placing obtained product in vacuum drying oven and drying to obtain composite photocatalyst. USE - The method is used for preparing silver phosphate/graphene oxide/hydroxyapatite composite photocatalyst using bovine bone, which is used for degrading organic pollutants in industrial, agricultural and domestic wastewater discharge (claimed). ADVANTAGE - The method adopts a wide range of sources, and the prepared catalyst product has high photocatalytic activity in visible light region and excellent photocatalytic stability and light corrosion resistance, and is economical and environmentally-friendly.