Facile green synthesis of graphene-titanium nitride hybrid nanostructure for the simultaneous determination of acetaminophen and 4-aminophenol

We demonstrate herein a newly developed electrochemical sensor base on the reduced graphene oxide-titanium nitride (RGO-TiN) nanohybrid. The nanohybrid was prepared by mixing the TiN nanoparticles and GO dispersion and then treating with glucose and Zn foils. The morphologies and microstructures of the as-prepared nanohybrid were characterized by UV-vis absorption spectroscopy, X-ray photoelectron spectroscopy, transmission electron microscopy and Raman spectroscopy. The as-prepared RGO-TiN nanohybrid exhibited excellent electrocatalytic activity toward the simultaneous detection of acetaminophen (ACOP) and 4-aminophenol (4-AP). As a result, the linear detection ranges were 0.06-660 mu M for ACOP and 0.05-520 mu M for 4-AP, respectively, with the low detection limits of 0.02 mu M for ACOP and 0.013 mu M for 4-AP. Based on the excellent performance, it was demonstrated that the prepared RGO-TiN nanohybrid was a promising candidate for advanced electrode material in electrochemical sensing field and the as-prepared RGO-TiN nanohybrid may find more applications for the detection of various analytes. (C) 2015 Elsevier B.V. All rights reserved.