In situ synthesis and characterization of Prussian blue nanocubes on graphene oxide and its application for H2O2 reduction

Abstract

An effective and facile in situ electroless deposition approach has been developed for growing high-quality Prussian blue nanocubes on the surface of graphene oxide (PBNCs/GO) in a controlled manner. The resulting hybrids are characterized by scanning electron microscopy, transmission electron microscopy, Fourier transform infrared, ultraviolet visible, X-ray diffraction and electrochemical techniques. The electrochemical behavior on the modified electrode is discussed in detail.
A linear calibration of the biosensor is obtained in the range of 0.002–2.8 mM with a detection limit of 0.48 µM. The response is within less than 5 s and the detection sensitivity is 2502 µA mM^-1cm^-2. The proposed approach allows simple and controlled preparation of transition metal hexacyanoferrate nanocrystals/graphene oxide and is promising for the study of unique shape-, size-, and structure- dependent properties for optoelectronic, magnetic, and electrocatalytic applications.