▎ 摘　　要

NOVELTY - Bactericide composition comprises 0.1-1 pts. wt. graphene, 5-15 pts. wt. photocatalyst, 0.1-1 pts. wt. aerogel, 60-80 pts. wt. resin, 0.1-1 pts. wt. silver ion and 2-5 pts. wt. copper ion. USE - Bactericide composition for epidemic preventing and sterilizing public places and/or public equipment (claimed). ADVANTAGE - The bactericide composition improves the sterilization effect of filter, mask prepared by the air filter has no air resistance, and the sterilization and antivirus effect is efficient and lasting, is applied to latex paint to enhance the abrasion resistance of latex paint, and can be applied to concrete to enhance the impermeability of concrete. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for: (1) a method for preparing the bactericide composition, which involves mixing the components to obtain the product; (2) an air filter, which comprises upper cover, shell body, lower cover, first air inlet, first air outlet; (3) a mask, which comprises a mask body and air filter; (4) a modified emulsion paint, which comprises 5-15 wt.% bactericide and emulsion paint; and (5) a modified concrete, which comprises 5-10 wt.% bactericide and cement mortar. DESCRIPTION OF DRAWING(S) - The drawing shows an schematic diagram of the air filter. Shell body (1-a) Lower cover (1-b) Upper cover (2) First air inlet (4-a) First air outlet (4-b)