Bacteria-derived topologies of CuO nanozymes exert a variable antibacterial effect.

The ability of bacteria to facilitate fabrication of nanomaterials has been adapted towards bacterial sensing applications. In this work, we fabricate spherical, cubic and truncated octahedron topologies of CuO nanoparticles -facilitated redox reaction in an electrochemical setup. The CuO nanoparticles exhibit cytochrome c oxidase-like activity with the spherical topology displaying higher catalytic rate compared to the other geometries. The topology-dependent catalytic behavior of CuO nanoparticles has not been reported previously. The CuO nanozymes also display killing activity in a topology-correlated manner. The mediated redox reaction in an electrochemical setup is being reported for the first time for synthesis of different topologies of CuO which also exert a variable antibacterial effect.