▎ 摘　　要

NOVELTY - Preparing graphene composite antiviral powder and antibacterial and antiviral air filter material, comprises (i) mixing graphene oxide powder and de-ionized water, stirring at high speed for 30-60 minutes to obtain uniformly dispersed graphene oxide suspension, (ii) mixing the graphene oxide suspension and acetone, introducing into a sealing bag filled with nitrogen, controlling the beam intensity and energy of the electronic accelerator, irradiating with a certain range dose, centrifugally washing using de-ionized water, adding de-ionized water according to the mass ratio of the graphene oxide powder and the de-ionized water of 0.5:100 to obtain reduced graphene oxide suspension, (iii) preparing mixed activating stock solution with concentration 1-2 g/l palladium(II) chloride, 15-20 g/l tin(II) chloride and 60-100 ml/l hypo chlorous acid. USE - The method is useful for preparing graphene composite antiviral powder and antibacterial and antiviral air filter material. ADVANTAGE - The antibacterial and antiviral air filter material has excellent retention and killing effects on bacteria, mites and viruses.