Hydroquinone colorimetric sensing based on core–shell structured CoFe₂O₄@N-GQDs@CeO₂ nanocomposites as oxidase mimics

Abstract

The core–shell structured CoFe2O4@N-GQDs@CeO2 nanocomposites were successfully synthesized by co-precipitation method, and CeO2 was uniformly dispersed on the shell layer with the help of nitrogen-doped graphene quantum dots (N-GQDs).