▎ 摘　　要

NOVELTY - Long-lasting quaternary ammonium salt disinfectant comprises organosilicon quaternary ammonium salt-modified graphene oxide, glycerol and water. USE - As long-lasting quaternary ammonium salt disinfectant. ADVANTAGE - The disinfectant has good stability and uniformity, no biological toxicity and no irritation to skin, which is safe and reliable to use. The killing rate is more than 99.99% on Escherichia coli, Staphylococcus aureus, Pseudomonas aeruginosa, coronavirus and influenza virus with long-lasting antibacterial effect of more than 30 days. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a preparation method of the long-lasting quaternary ammonium salt disinfectant comprising dissolving glycerol in water, and adding organosilicon quaternary ammonium salt-modified graphene oxide while stirring to obtain the product.