In this study, we present a new approach to electrochemical growth of Cu 2 O/electrochemically reduced graphene oxide (Cu 2 O/ERGO) nanostructures that are based on simultaneous co-reduction of both copper ions and graphene oxide from an aqueous suspension on gold electrode. The X-ray diffraction (XRD) spectra of as-prepared Cu 2 O/ERGO electrode showed that Cu 2 O and graphene structures in composite nanostructures. The SEM image exhibited that combining the crumpled ERGO and nanocubes shapes of Cu 2 O in nanocomposite stucture. The Cu 2 O/ERGO nanocomposite electrode exhibits good electrocatalytic activity toward detection of non-enzymatic H 2 O 2 , compared to bare Au and Au/Cu 2 O electrodes, in terms of low working potential and high current density. The linear detection range for H 2 O 2 is 1-1000 μM while the detection limit is 0.14 μM. Furthermore, a very high sensitivity is achieved with 168.2 mA mM À 1 cm À 2 estimated for H 2 O 2 . These results suggest that Cu 2 O/ERGO nanocomposites thus easily prepared through an electrochemical co-reduction method are promising electrode materials for biosensor application.[a] Dr.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.