▎ 摘　　要

NOVELTY - Desulfurization and denitration of boiler flue gas involves using a graphene-oxide-based iron(III) hydroxide solution obtained by preparing expanded graphite, preparing a graphene oxide powder using the expanded graphite, weighing an appropriate amount of the graphene oxide powder and placing in 200 mL beaker, adding 100 mL deionized water, stirring until the graphene oxide is broken, placing the beaker in an ultrasonic oscillator, ultrasonically oscillating for 3 times each for 20 minutes to obtain a graphene oxide dispersion aqueous solution, continuously stirring 0.2 mol/L ferric nitrate solution and 0.5 mol/L sodium hydroxide solution at 60 degrees C and simultaneously dripping to the graphene oxide dispersion until the pH of the solution becomes neutral to obtain the graphene-oxide-based iron(III) hydroxide solution. USE - Desulfurization and denitration of boiler flue gas. ADVANTAGE - The method uses graphene-oxide-based iron(III) hydroxide to adsorb nitrogen oxide and sulfur dioxide in the flue gas on a surface of the graphene-oxide-based iron(III) hydroxide, thus enhancing removal efficiency of sulfur and nitrate from the flue gas.