▎ 摘　　要

NOVELTY - An air purifier comprises 10-15 %mass nitroimidazole, 8-12 %mass plant extracts, 1-3 %mass graphene oxide, 0.1-2 %mass lauryl alcohol, 1-10 %mass sodium bicarbonate, 5-15 %mass polyethylene glycol, and water. The plant extract is a notoginseng extract and/or a rosin extract. USE - Air purifier. ADVANTAGE - The air purifier is non-toxic, non-corrosive and safe, has good effect on removing formaldehyde from indoor plates, long-lasting effect, and excellent stability. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a preparation of an air purifier, which involves adding nitro-imidazole and mixing uniformly, adding plant extracts, lauryl alcohol, sodium bicarbonate, polyethylene glycol and water, and then filtering, after the graphene oxide solution is ultrasonically dispersed.