Electrodeposition of ZnO-RGO thin film for determining Hg(II) in water samples

摘要

In this paper, we developed an electrochemical sensor for the detection of Hg in various watersamples. The electrochemical sensor was prepared by electrodeposition of ZnO nanostructures on anindium tin oxide (ITO). The ZnO thin film was then covered by a layer of graphene oxide (GO) usingdip coating method. Subsequently, the GO layer was electrochemically reduced and forms ZnO- reduced graphene oxide (RGO). The obtained thin film was characterized by a series of techniques.Then, the electrochemical parameters of using proposed sensor for Hg(II) detection were optimized.Results indicated the sensor is suitable for Hg(II) detection in various water samples.