Amino acid modified cascade double nano-enzyme material as well as preparation method and application thereof

The invention belongs to the technical field of antibacterial materials, and particularly relates to an amino acid modified cascade double-nano-enzyme material as well as a preparation method and application thereof. The amino acid modified cascade double-nano-enzyme material provided by the invention comprises a FeOOH inner core, a shell wrapping the inner core and gold nanoparticles arranged on the surface of the shell, the shell is a coordination substance formed by coordination of Fe < 2 + > and amino acid. On the premise of ensuring the strong positive electricity of the whole material, the material is endowed with a stronger antibacterial effect. Meanwhile, through the combined action of the gold nanoparticles and Fe < 2 + > on the outer surface of the shell, on one hand, the catalytic activity of the cascade nano-enzyme is enhanced, H2O2 and. OH can be generated by reacting the cascade nano-enzyme with high-concentration glucose at a diabetes wound and glucose released in a dental caries bacterial biof