MnWO4 nanocapsules: Synthesis, characterization and its electrochemical sensing property

Manganese tungstate (MnWO4) was synthesized by surfactant free precipitation method. MnWO4 was characterized by using various spectroscopic techniques. The phase, crystalline nature and the morphological analysis were carried out using XRD, scanning electron microscopy (SEM), and high resolution transmission electron microscopy (HR-TEM). Further, FT-IR, Raman, and DRS-UV-Vis spectral analysis were carried out in order to ascertain the optical property and the presence of functional groups. From the analysis, the morphology of the MnWO4 was observed to be in capsules with breadth and thickness were in nm range. The oxidation state of tungsten (W), and manganese (Mn) were investigated using Xray photo electron spectroscopy (XPS) and electron paramagnetic resonance spectroscopy (EPR). The synthesized MnWO4 nanocapsules were used to modify glassy carbon electrode (GCE) to detect quercetin. (C) 2014 Elsevier B.V. All rights reserved.