▎ 摘　　要

NOVELTY - Formaldehyde-removing material includes an aldehyde scavenger A and an aldehyde scavenger B, where the aldehyde scavenger A includes silica gel, polyethyleneimine, and ethylene urea. The aldehyde scavenger B includes graphene and ethylene urea. USE - Formaldehyde-removing material used as a common indoor air pollutant for headache, dizziness, hypodynamia, nausea, vomiting and hypomnesis. ADVANTAGE - The material is featured with fast and simple, low energy consumption, low cost without pollution and without blocking the pore canal of silica gel or graphite alkene, and has good formaldehyde removing effect. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method for preparing formaldehyde removing material, which involves preparing aldehyde-removing agent A by stirring polyethyleneimine with a solvent capable of dissolving polyethyleneimine to obtain solution C, adding ethylene urea powder in solution C to obtain solution D, adding the silica gel powder to the solution D under stirring to obtain the silica gel dispersion E, carrying out solid-liquid separation to silica gel dispersion E, and then separating solid matter to obtain aldehyde remover A, and preparing aldehyde scavenger B by adding graphene to water under stirring and dispersing uniformly to obtain graphene dispersion F, adding ethylene urea powder into the graphene dispersion F under dispersing to obtain the graphene dispersion G, and then putting graphene dispersion G into a freeze dryer to get the aldehyde scavenger B.