Co3O4-reduced graphene oxide nanocomposite as an effective peroxidase mimetic and its application in visual biosensing of glucose.

Highlights: [•] The well-dispersed Co3O4 NPs on rGO surfaces were successfully synthesized. [•] The as-obtained Co3O4/rGO nanocomposites exhibit an effective peroxidase-like activity. [•] They can catalyze the oxidation of TMB by H2O2 to produce an intensified blue reaction. [•] The Co3O4/rGO-based colorimetric and visual biosensing of glucose was developed. [ABSTRACT FROM AUTHOR]